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<li><strong>Alinson S. Xavier,</strong> Argonne National Laboratory <<a href="mailto:axavier@anl.gov">axavier@anl.gov</a>></li>
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<li><strong>Feng Qiu,</strong> Argonne National Laboratory <<a href="mailto:fqiu@anl.gov">fqiu@anl.gov</a>></li>
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<h3 id="acknowledgements">Acknowledgements</h3>
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<li>Based upon work supported by Laboratory Directed Research and Development (LDRD) funding from Argonne National Laboratory, provided by the Director, Office of Science, of the U.S. Department of Energy under Contract No. DE-AC02-06CH11357.</li>
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<h3 id="references">References</h3>
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<ul>
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<li><strong>Learning to Solve Large-Scale Security-Constrained Unit Commitment Problems.</strong> <em>Alinson S. Xavier, Feng Qiu, Shabbir Ahmed</em>. INFORMS Journal on Computing (to appear). <a href="https://arxiv.org/abs/1902.01697">ArXiv:1902:01696</a></li>
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<h3 id="license">License</h3>
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<pre><code>MIPLearn, an extensible framework for Learning-Enhanced Mixed-Integer Optimization
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Copyright (C) 2019-2020 Argonne National Laboratory. All rights reserved.
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<li class="first-level active"><a href="#benchmarks-utilities">Benchmarks Utilities</a></li>
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<li class="second-level"><a href="#using-benchmarkrunner">Using BenchmarkRunner</a></li>
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<h1 id="benchmarks-utilities">Benchmarks Utilities</h1>
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<h3 id="using-benchmarkrunner">Using <code>BenchmarkRunner</code></h3>
|
||||
<p>MIPLearn provides the utility class <code>BenchmarkRunner</code>, which simplifies the task of comparing the performance of different solvers. The snippet below shows its basic usage:</p>
|
||||
<pre><code class="python">from miplearn import BenchmarkRunner, LearningSolver
|
||||
|
||||
# Create train and test instances
|
||||
train_instances = [...]
|
||||
test_instances = [...]
|
||||
|
||||
# Training phase...
|
||||
training_solver = LearningSolver(...)
|
||||
training_solver.parallel_solve(train_instances, n_jobs=10)
|
||||
training_solver.save_state("data.bin")
|
||||
|
||||
# Test phase...
|
||||
test_solvers = {
|
||||
"Baseline": LearningSolver(...), # each solver may have different parameters
|
||||
"Strategy A": LearningSolver(...),
|
||||
"Strategy B": LearningSolver(...),
|
||||
"Strategy C": LearningSolver(...),
|
||||
}
|
||||
benchmark = BenchmarkRunner(test_solvers)
|
||||
benchmark.load_state("data.bin")
|
||||
benchmark.fit()
|
||||
benchmark.parallel_solve(test_instances, n_jobs=2)
|
||||
print(benchmark.raw_results())
|
||||
</code></pre>
|
||||
|
||||
<p>The method <code>load_state</code> loads the saved training data into each one of the provided solvers, while <code>fit</code> trains their respective ML models. The method <code>parallel_solve</code> solves the test instances in parallel, and collects solver statistics such as running time and optimal value. Finally, <code>raw_results</code> produces a table of results (Pandas DataFrame) with the following columns:</p>
|
||||
<ul>
|
||||
<li><strong>Solver,</strong> the name of the solver.</li>
|
||||
<li><strong>Instance,</strong> the sequence number identifying the instance.</li>
|
||||
<li><strong>Wallclock Time,</strong> the wallclock running time (in seconds) spent by the solver;</li>
|
||||
<li><strong>Lower Bound,</strong> the best lower bound obtained by the solver;</li>
|
||||
<li><strong>Upper Bound,</strong> the best upper bound obtained by the solver;</li>
|
||||
<li><strong>Gap,</strong> the relative MIP integrality gap at the end of the optimization;</li>
|
||||
<li><strong>Nodes,</strong> the number of explored branch-and-bound nodes.</li>
|
||||
</ul>
|
||||
<p>In addition to the above, there is also a "Relative" version of most columns, where the raw number is compared to the solver which provided the best performance. The <em>Relative Wallclock Time</em> for example, indicates how many times slower this run was when compared to the best time achieved by any solver when processing this instance. For example, if this run took 10 seconds, but the fastest solver took only 5 seconds to solve the same instance, the relative wallclock time would be 2.</p>
|
||||
<h3 id="saving-and-loading-benchmark-results">Saving and loading benchmark results</h3>
|
||||
<p>When iteratively exploring new formulations, encoding and solver parameters, it is often desirable to avoid repeating parts of the benchmark suite. For example, if the baseline solver has not been changed, there is no need to evaluate its performance again and again when making small changes to the remaining solvers. <code>BenchmarkRunner</code> provides the methods <code>save_results</code> and <code>load_results</code>, which can be used to avoid this repetition, as the next example shows:</p>
|
||||
<pre><code class="python"># Benchmark baseline solvers and save results to a file.
|
||||
benchmark = BenchmarkRunner(baseline_solvers)
|
||||
benchmark.load_state("training_data.bin")
|
||||
benchmark.parallel_solve(test_instances)
|
||||
benchmark.save_results("baseline_results.csv")
|
||||
|
||||
# Benchmark remaining solvers, loading baseline results from file.
|
||||
benchmark = BenchmarkRunner(alternative_solvers)
|
||||
benchmark.load_state("training_data.bin")
|
||||
benchmark.load_results("baseline_results.csv")
|
||||
benchmark.parallel_solve(test_instances)
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</code></pre></div>
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|
||||
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|
||||
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|
||||
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|
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|
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|
||||
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|
||||
|
||||
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|
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|
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|
||||
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|
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|
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
/* End Bootstrap Callouts CSS Source by Chris Pratt */
|
||||
|
||||
/* Admonitions */
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
@ -0,0 +1 @@
|
||||
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|
||||
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Load Diff
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@ -0,0 +1,82 @@
|
||||
/*
|
||||
Cinder Theme for MkDocs | Copyright 2015 Christopher Simpkins | MIT License
|
||||
*/
|
||||
|
||||
body {
|
||||
font-family:"Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
h1 small, h2 small, h3 small, h4 small, h5 small, h6 small, .h1 small, .h2 small, .h3 small, .h4 small, .h5 small, .h6 small, h1 .small, h2 .small, h3 .small, h4 .small, h5 .small, h6 .small, .h1 .small, .h2 .small, .h3 .small, .h4 .small, .h5 .small, .h6 .small {
|
||||
color: #B1B7B9;
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
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|
||||
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|
||||
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|
||||
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|
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|
||||
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|
||||
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|
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|
||||
font-variant: small-caps;
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
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|
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|
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|
||||
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|
||||
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|
||||
.navbar-default {
|
||||
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|
||||
border-bottom: 8px #EBF2F2 solid;
|
||||
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|
||||
.bs-sidenav {
|
||||
background-image: url("../img/grid11.png");
|
||||
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|
||||
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|
||||
}
|
||||
.well {
|
||||
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|
||||
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|
||||
.btn-default {
|
||||
background-color:#FCFDFF;
|
||||
}
|
||||
.table-striped > tbody > tr:nth-child(2n+1) > td, .table-striped > tbody > tr:nth-child(2n+1) > th {
|
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|
||||
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|
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#mkdocs-search-query:focus {
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||||
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|
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|
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|
||||
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|
||||
color: #343838;
|
||||
height: 45px;
|
||||
}
|
||||
footer > hr {
|
||||
width: 35%;
|
||||
}
|
||||
@ -0,0 +1 @@
|
||||
body{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:16px;line-height:1.7;background-color:#FFF;color:#343838}h1,h2,h3,h4,h5,h6{font-family:'PT Sans','Helvetica Neue',Helvetica,Arial,sans-serif;color:#222}h1 small,h2 small,h3 small,h4 small,h5 small,h6 small,.h1 small,.h2 small,.h3 small,.h4 small,.h5 small,.h6 small,h1 .small,h2 .small,h3 .small,h4 .small,h5 .small,h6 .small,.h1 .small,.h2 .small,.h3 .small,.h4 .small,.h5 .small,.h6 .small{color:#b1b7b9}h1,h2{font-weight:700}h4{font-family:'Open Sans','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:300;margin-top:20px;font-style:italic}h5{font-family:'Open Sans','Helvetica Neue',Helvetica,Arial,sans-serif;font-weight:300;font-variant:small-caps}pre,code{background-color:#fcfdff}pre>code{font-size:13px}pre{margin-top:25px;margin-bottom:25px}.lead{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-weight:400;line-height:1.4;letter-spacing:.0312em;color:#b1b7b9}.navbar-default{background-color:#343838;border-bottom:8px #ebf2f2 solid}.bs-sidenav{background-image:url("../img/grid11.png");background-repeat:repeat;font-size:12px}.well{background-color:#fcfdff}.btn-default{background-color:#fcfdff}.table-striped>tbody>tr:nth-child(2n+1)>td,.table-striped>tbody>tr:nth-child(2n+1)>th{background-color:#fcfdff}#mkdocs-search-query:focus{outline:0;-webkit-box-shadow:none;box-shadow:none}#mkdocs-search-query{font-family:"Open Sans","Helvetica Neue",Helvetica,Arial,sans-serif;font-size:20px;font-weight:700;color:#343838;height:45px}footer>hr{width:35%}
|
||||
@ -0,0 +1,99 @@
|
||||
/*
|
||||
|
||||
github.com style (c) Vasily Polovnyov <vast@whiteants.net>
|
||||
|
||||
*/
|
||||
|
||||
.hljs {
|
||||
display: block;
|
||||
overflow-x: auto;
|
||||
padding: 0.5em;
|
||||
color: #333;
|
||||
background: #FCFDFF;
|
||||
}
|
||||
|
||||
.hljs-comment,
|
||||
.hljs-quote {
|
||||
color: #998;
|
||||
font-style: italic;
|
||||
}
|
||||
|
||||
.hljs-keyword,
|
||||
.hljs-selector-tag,
|
||||
.hljs-subst {
|
||||
color: #333;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.hljs-number,
|
||||
.hljs-literal,
|
||||
.hljs-variable,
|
||||
.hljs-template-variable,
|
||||
.hljs-tag .hljs-attr {
|
||||
color: #008080;
|
||||
}
|
||||
|
||||
.hljs-string,
|
||||
.hljs-doctag {
|
||||
color: #d14;
|
||||
}
|
||||
|
||||
.hljs-title,
|
||||
.hljs-section,
|
||||
.hljs-selector-id {
|
||||
color: #900;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
||||
.hljs-subst {
|
||||
font-weight: normal;
|
||||
}
|
||||
|
||||
.hljs-type,
|
||||
.hljs-class .hljs-title {
|
||||
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|
||||
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|
||||
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|
||||
|
||||
.hljs-tag,
|
||||
.hljs-name,
|
||||
.hljs-attribute {
|
||||
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|
||||
font-weight: normal;
|
||||
}
|
||||
|
||||
.hljs-regexp,
|
||||
.hljs-link {
|
||||
color: #009926;
|
||||
}
|
||||
|
||||
.hljs-symbol,
|
||||
.hljs-bullet {
|
||||
color: #990073;
|
||||
}
|
||||
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||||
.hljs-built_in,
|
||||
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|
||||
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|
||||
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|
||||
|
||||
.hljs-meta {
|
||||
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|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
.hljs-addition {
|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
||||
|
||||
.hljs-strong {
|
||||
font-weight: bold;
|
||||
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|
||||
@ -0,0 +1 @@
|
||||
.hljs{display:block;overflow-x:auto;padding:.5em;color:#333;background:#fcfdff}.hljs-comment,.hljs-quote{color:#998;font-style:italic}.hljs-keyword,.hljs-selector-tag,.hljs-subst{color:#333;font-weight:bold}.hljs-number,.hljs-literal,.hljs-variable,.hljs-template-variable,.hljs-tag .hljs-attr{color:teal}.hljs-string,.hljs-doctag{color:#d14}.hljs-title,.hljs-section,.hljs-selector-id{color:#900;font-weight:bold}.hljs-subst{font-weight:normal}.hljs-type,.hljs-class .hljs-title{color:#458;font-weight:bold}.hljs-tag,.hljs-name,.hljs-attribute{color:navy;font-weight:normal}.hljs-regexp,.hljs-link{color:#009926}.hljs-symbol,.hljs-bullet{color:#990073}.hljs-built_in,.hljs-builtin-name{color:#0086b3}.hljs-meta{color:#999;font-weight:bold}.hljs-deletion{background:#fdd}.hljs-addition{background:#dfd}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:bold}
|
||||
@ -0,0 +1,250 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta http-equiv="X-UA-Compatible" content="IE=edge">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
|
||||
|
||||
|
||||
<link rel="../img/favicon.ico">
|
||||
|
||||
|
||||
<title>Customization - MIPLearn</title>
|
||||
|
||||
|
||||
<link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
|
||||
<link rel="stylesheet" href="//cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.min.css">
|
||||
<link href='//fonts.googleapis.com/css?family=PT+Sans:400,400italic,700,700italic&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
|
||||
<link href='//fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,600,700&subset=latin-ext,latin' rel='stylesheet' type='text/css'>
|
||||
<link href="../css/bootstrap-custom.min.css" rel="stylesheet">
|
||||
<link href="../css/base.min.css" rel="stylesheet">
|
||||
<link href="../css/cinder.min.css" rel="stylesheet">
|
||||
<link href="../css/highlight.min.css" rel="stylesheet">
|
||||
|
||||
<!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
|
||||
<!--[if lt IE 9]>
|
||||
<script src="https://cdn.jsdelivr.net/npm/html5shiv@3.7.3/dist/html5shiv.min.js"></script>
|
||||
<script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
|
||||
<![endif]-->
|
||||
|
||||
<script src="//ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js"></script>
|
||||
<script>
|
||||
WebFont.load({
|
||||
google: {
|
||||
families: ['Open Sans', 'PT Sans']
|
||||
}
|
||||
});
|
||||
</script>
|
||||
|
||||
|
||||
|
||||
|
||||
</head>
|
||||
|
||||
<body>
|
||||
|
||||
<div class="navbar navbar-default navbar-fixed-top" role="navigation">
|
||||
<div class="container">
|
||||
|
||||
<!-- Collapsed navigation -->
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<h3 id="selecting-the-internal-mip-solver">Selecting the internal MIP solver</h3>
|
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<p>By default, <code>LearningSolver</code> uses <a href="https://www.gurobi.com/">Gurobi</a> as its internal MIP solver. Alternative solvers can be specified through the <code>internal_solver_factory</code> constructor argument. This argument should provide a function (with no arguments) that constructs, configures and returns the desired solver. To select CPLEX, for example:</p>
|
||||
<pre><code class="python">from miplearn import LearningSolver
|
||||
import pyomo.environ as pe
|
||||
|
||||
def cplex_factory():
|
||||
cplex = pe.SolverFactory("cplex")
|
||||
cplex.options["threads"] = 4
|
||||
return cplex
|
||||
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solver = LearningSolver(internal_solver_factory=cplex_factory)
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<h1 id="miplearn">MIPLearn</h1>
|
||||
<p><strong>MIPLearn</strong> is an extensible framework for <em>Learning-Enhanced Mixed-Integer Optimization</em>, an approach targeted at discrete optimization problems that need to be repeatedly solved with only minor changes to input data. The package uses Machine Learning (ML) to automatically identify patterns in previously solved instances of the problem, or in the solution process itself, and produces hints that can guide a conventional MIP solver towards the optimal solution faster. For particular classes of problems, this approach has been shown to provide significant performance benefits (see <a href="benchmark/#benchmark-results">benchmark results</a> and <a href="about/#references">references</a> for more details).</p>
|
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<h3 id="features">Features</h3>
|
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<ul>
|
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<li>
|
||||
<p><strong>MIPLearn proposes a flexible problem specification format,</strong> which allows users to describe their particular optimization problems to a Learning-Enhanced MIP solver, both from the MIP perspective and from the ML perspective, without making any assumptions on the problem being modeled, the mathematical formulation of the problem, or ML encoding. While the format is very flexible, some constraints are enforced to ensure that it is usable by an actual solver.</p>
|
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<li>
|
||||
<p><strong>MIPLearn provides a reference implementation of a <em>Learning-Enhanced Solver</em>,</strong> which can use the above problem specification format to automatically predict, based on previously solved instances, a number of hints to accelerate MIP performance. Currently, the reference solver is able to predict: (i) partial solutions which are likely to work well as MIP starts; (ii) an initial set of lazy constraints to enforce; (iii) affine subspaces where the solution is likely to reside; (iv) variable branching priorities to accelerate the exploration of the branch-and-bound tree. The usage of the solver is very straightforward. The most suitable ML models are automatically selected, trained, cross-validated and applied to the problem with no user intervention.</p>
|
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|
||||
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|
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|
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<p><strong>MIPLearn is customizable and extensible</strong>. For MIP and ML researchers exploring new techniques to accelerate MIP performance based on historical data, each component of the reference solver can be individually replaced, extended or customized.</p>
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|
||||
</div><div class="modal" id="mkdocs_keyboard_modal" tabindex="-1" role="dialog" aria-labelledby="keyboardModalLabel" aria-hidden="true">
|
||||
<div class="modal-dialog">
|
||||
<div class="modal-content">
|
||||
<div class="modal-header">
|
||||
<h4 class="modal-title" id="keyboardModalLabel">Keyboard Shortcuts</h4>
|
||||
<button type="button" class="close" data-dismiss="modal"><span aria-hidden="true">×</span><span class="sr-only">Close</span></button>
|
||||
</div>
|
||||
<div class="modal-body">
|
||||
<table class="table">
|
||||
<thead>
|
||||
<tr>
|
||||
<th style="width: 20%;">Keys</th>
|
||||
<th>Action</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="help shortcut"><kbd>?</kbd></td>
|
||||
<td>Open this help</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="next shortcut"><kbd>n</kbd></td>
|
||||
<td>Next page</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="prev shortcut"><kbd>p</kbd></td>
|
||||
<td>Previous page</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td class="search shortcut"><kbd>s</kbd></td>
|
||||
<td>Search</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
<div class="modal-footer">
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
</html>
|
||||
|
||||
<!--
|
||||
MkDocs version : 1.0.4
|
||||
Build Date UTC : 2020-02-21 17:42:51
|
||||
-->
|
||||
@ -0,0 +1,235 @@
|
||||
function getSearchTerm()
|
||||
{
|
||||
var sPageURL = window.location.search.substring(1);
|
||||
var sURLVariables = sPageURL.split('&');
|
||||
for (var i = 0; i < sURLVariables.length; i++)
|
||||
{
|
||||
var sParameterName = sURLVariables[i].split('=');
|
||||
if (sParameterName[0] == 'q')
|
||||
{
|
||||
return sParameterName[1];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
$(document).ready(function() {
|
||||
/**
|
||||
* ------------------------------------------------------------------------
|
||||
* Cinder theme specific
|
||||
* ------------------------------------------------------------------------
|
||||
*/
|
||||
hljs.initHighlightingOnLoad();
|
||||
|
||||
|
||||
/**
|
||||
* ------------------------------------------------------------------------
|
||||
* Taken from themes/mkdocs/js/base.js
|
||||
* ------------------------------------------------------------------------
|
||||
*/
|
||||
var search_term = getSearchTerm(),
|
||||
$search_modal = $('#mkdocs_search_modal'),
|
||||
$keyboard_modal = $('#mkdocs_keyboard_modal');
|
||||
|
||||
if(search_term){
|
||||
$search_modal.modal();
|
||||
}
|
||||
|
||||
// make sure search input gets autofocus everytime modal opens.
|
||||
$search_modal.on('shown.bs.modal', function () {
|
||||
$search_modal.find('#mkdocs-search-query').focus();
|
||||
});
|
||||
|
||||
// Close search modal when result is selected
|
||||
// The links get added later so listen to parent
|
||||
$('#mkdocs-search-results').click(function(e) {
|
||||
if ($(e.target).is('a')) {
|
||||
$search_modal.modal('hide');
|
||||
}
|
||||
});
|
||||
|
||||
if (typeof shortcuts !== 'undefined') {
|
||||
// Populate keyboard modal with proper Keys
|
||||
$keyboard_modal.find('.help.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.help];
|
||||
$keyboard_modal.find('.prev.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.previous];
|
||||
$keyboard_modal.find('.next.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.next];
|
||||
$keyboard_modal.find('.search.shortcut kbd')[0].innerHTML = keyCodes[shortcuts.search];
|
||||
|
||||
// Keyboard navigation
|
||||
document.addEventListener("keydown", function(e) {
|
||||
if ($(e.target).is(':input')) return true;
|
||||
var key = e.which || e.key || window.event && window.event.key;
|
||||
var page;
|
||||
switch (key) {
|
||||
case shortcuts.next:
|
||||
page = $('.navbar a[rel="next"]:first').prop('href');
|
||||
break;
|
||||
case shortcuts.previous:
|
||||
page = $('.navbar a[rel="prev"]:first').prop('href');
|
||||
break;
|
||||
case shortcuts.search:
|
||||
e.preventDefault();
|
||||
$keyboard_modal.modal('hide');
|
||||
$search_modal.modal('show');
|
||||
$search_modal.find('#mkdocs-search-query').focus();
|
||||
break;
|
||||
case shortcuts.help:
|
||||
$search_modal.modal('hide');
|
||||
$keyboard_modal.modal('show');
|
||||
break;
|
||||
default: break;
|
||||
}
|
||||
if (page) {
|
||||
$keyboard_modal.modal('hide');
|
||||
window.location.href = page;
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
$('table').addClass('table table-striped table-hover');
|
||||
|
||||
// Improve the scrollspy behaviour when users click on a TOC item.
|
||||
$(".bs-sidenav a").on("click", function() {
|
||||
var clicked = this;
|
||||
setTimeout(function() {
|
||||
var active = $('.nav li.active a');
|
||||
active = active[active.length - 1];
|
||||
if (clicked !== active) {
|
||||
$(active).parent().removeClass("active");
|
||||
$(clicked).parent().addClass("active");
|
||||
}
|
||||
}, 50);
|
||||
});
|
||||
});
|
||||
|
||||
|
||||
/**
|
||||
* ------------------------------------------------------------------------
|
||||
* Taken from themes/mkdocs/js/base.js
|
||||
* ------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
$('body').scrollspy({
|
||||
target: '.bs-sidebar',
|
||||
offset: 100
|
||||
});
|
||||
|
||||
/* Prevent disabled links from causing a page reload */
|
||||
$("li.disabled a").click(function() {
|
||||
event.preventDefault();
|
||||
});
|
||||
|
||||
// See https://www.cambiaresearch.com/articles/15/javascript-char-codes-key-codes
|
||||
// We only list common keys below. Obscure keys are omited and their use is discouraged.
|
||||
var keyCodes = {
|
||||
8: 'backspace',
|
||||
9: 'tab',
|
||||
13: 'enter',
|
||||
16: 'shift',
|
||||
17: 'ctrl',
|
||||
18: 'alt',
|
||||
19: 'pause/break',
|
||||
20: 'caps lock',
|
||||
27: 'escape',
|
||||
32: 'spacebar',
|
||||
33: 'page up',
|
||||
34: 'page down',
|
||||
35: 'end',
|
||||
36: 'home',
|
||||
37: '←',
|
||||
38: '↑',
|
||||
39: '→',
|
||||
40: '↓',
|
||||
45: 'insert',
|
||||
46: 'delete',
|
||||
48: '0',
|
||||
49: '1',
|
||||
50: '2',
|
||||
51: '3',
|
||||
52: '4',
|
||||
53: '5',
|
||||
54: '6',
|
||||
55: '7',
|
||||
56: '8',
|
||||
57: '9',
|
||||
65: 'a',
|
||||
66: 'b',
|
||||
67: 'c',
|
||||
68: 'd',
|
||||
69: 'e',
|
||||
70: 'f',
|
||||
71: 'g',
|
||||
72: 'h',
|
||||
73: 'i',
|
||||
74: 'j',
|
||||
75: 'k',
|
||||
76: 'l',
|
||||
77: 'm',
|
||||
78: 'n',
|
||||
79: 'o',
|
||||
80: 'p',
|
||||
81: 'q',
|
||||
82: 'r',
|
||||
83: 's',
|
||||
84: 't',
|
||||
85: 'u',
|
||||
86: 'v',
|
||||
87: 'w',
|
||||
88: 'x',
|
||||
89: 'y',
|
||||
90: 'z',
|
||||
91: 'Left Windows Key / Left ⌘',
|
||||
92: 'Right Windows Key',
|
||||
93: 'Windows Menu / Right ⌘',
|
||||
96: 'numpad 0',
|
||||
97: 'numpad 1',
|
||||
98: 'numpad 2',
|
||||
99: 'numpad 3',
|
||||
100: 'numpad 4',
|
||||
101: 'numpad 5',
|
||||
102: 'numpad 6',
|
||||
103: 'numpad 7',
|
||||
104: 'numpad 8',
|
||||
105: 'numpad 9',
|
||||
106: 'multiply',
|
||||
107: 'add',
|
||||
109: 'subtract',
|
||||
110: 'decimal point',
|
||||
111: 'divide',
|
||||
112: 'f1',
|
||||
113: 'f2',
|
||||
114: 'f3',
|
||||
115: 'f4',
|
||||
116: 'f5',
|
||||
117: 'f6',
|
||||
118: 'f7',
|
||||
119: 'f8',
|
||||
120: 'f9',
|
||||
121: 'f10',
|
||||
122: 'f11',
|
||||
123: 'f12',
|
||||
124: 'f13',
|
||||
125: 'f14',
|
||||
126: 'f15',
|
||||
127: 'f16',
|
||||
128: 'f17',
|
||||
129: 'f18',
|
||||
130: 'f19',
|
||||
131: 'f20',
|
||||
132: 'f21',
|
||||
133: 'f22',
|
||||
134: 'f23',
|
||||
135: 'f24',
|
||||
144: 'num lock',
|
||||
145: 'scroll lock',
|
||||
186: ';',
|
||||
187: '=',
|
||||
188: ',',
|
||||
189: '‐',
|
||||
190: '.',
|
||||
191: '?',
|
||||
192: '`',
|
||||
219: '[',
|
||||
220: '\',
|
||||
221: ']',
|
||||
222: ''',
|
||||
};
|
||||
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,96 @@
|
||||
function getSearchTermFromLocation() {
|
||||
var sPageURL = window.location.search.substring(1);
|
||||
var sURLVariables = sPageURL.split('&');
|
||||
for (var i = 0; i < sURLVariables.length; i++) {
|
||||
var sParameterName = sURLVariables[i].split('=');
|
||||
if (sParameterName[0] == 'q') {
|
||||
return decodeURIComponent(sParameterName[1].replace(/\+/g, '%20'));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function joinUrl (base, path) {
|
||||
if (path.substring(0, 1) === "/") {
|
||||
// path starts with `/`. Thus it is absolute.
|
||||
return path;
|
||||
}
|
||||
if (base.substring(base.length-1) === "/") {
|
||||
// base ends with `/`
|
||||
return base + path;
|
||||
}
|
||||
return base + "/" + path;
|
||||
}
|
||||
|
||||
function formatResult (location, title, summary) {
|
||||
return '<article><h3><a href="' + joinUrl(base_url, location) + '">'+ title + '</a></h3><p>' + summary +'</p></article>';
|
||||
}
|
||||
|
||||
function displayResults (results) {
|
||||
var search_results = document.getElementById("mkdocs-search-results");
|
||||
while (search_results.firstChild) {
|
||||
search_results.removeChild(search_results.firstChild);
|
||||
}
|
||||
if (results.length > 0){
|
||||
for (var i=0; i < results.length; i++){
|
||||
var result = results[i];
|
||||
var html = formatResult(result.location, result.title, result.summary);
|
||||
search_results.insertAdjacentHTML('beforeend', html);
|
||||
}
|
||||
} else {
|
||||
search_results.insertAdjacentHTML('beforeend', "<p>No results found</p>");
|
||||
}
|
||||
}
|
||||
|
||||
function doSearch () {
|
||||
var query = document.getElementById('mkdocs-search-query').value;
|
||||
if (query.length > 2) {
|
||||
if (!window.Worker) {
|
||||
displayResults(search(query));
|
||||
} else {
|
||||
searchWorker.postMessage({query: query});
|
||||
}
|
||||
} else {
|
||||
// Clear results for short queries
|
||||
displayResults([]);
|
||||
}
|
||||
}
|
||||
|
||||
function initSearch () {
|
||||
var search_input = document.getElementById('mkdocs-search-query');
|
||||
if (search_input) {
|
||||
search_input.addEventListener("keyup", doSearch);
|
||||
}
|
||||
var term = getSearchTermFromLocation();
|
||||
if (term) {
|
||||
search_input.value = term;
|
||||
doSearch();
|
||||
}
|
||||
}
|
||||
|
||||
function onWorkerMessage (e) {
|
||||
if (e.data.allowSearch) {
|
||||
initSearch();
|
||||
} else if (e.data.results) {
|
||||
var results = e.data.results;
|
||||
displayResults(results);
|
||||
}
|
||||
}
|
||||
|
||||
if (!window.Worker) {
|
||||
console.log('Web Worker API not supported');
|
||||
// load index in main thread
|
||||
$.getScript(joinUrl(base_url, "search/worker.js")).done(function () {
|
||||
console.log('Loaded worker');
|
||||
init();
|
||||
window.postMessage = function (msg) {
|
||||
onWorkerMessage({data: msg});
|
||||
};
|
||||
}).fail(function (jqxhr, settings, exception) {
|
||||
console.error('Could not load worker.js');
|
||||
});
|
||||
} else {
|
||||
// Wrap search in a web worker
|
||||
var searchWorker = new Worker(joinUrl(base_url, "search/worker.js"));
|
||||
searchWorker.postMessage({init: true});
|
||||
searchWorker.onmessage = onWorkerMessage;
|
||||
}
|
||||
File diff suppressed because one or more lines are too long
@ -0,0 +1,128 @@
|
||||
var base_path = 'function' === typeof importScripts ? '.' : '/search/';
|
||||
var allowSearch = false;
|
||||
var index;
|
||||
var documents = {};
|
||||
var lang = ['en'];
|
||||
var data;
|
||||
|
||||
function getScript(script, callback) {
|
||||
console.log('Loading script: ' + script);
|
||||
$.getScript(base_path + script).done(function () {
|
||||
callback();
|
||||
}).fail(function (jqxhr, settings, exception) {
|
||||
console.log('Error: ' + exception);
|
||||
});
|
||||
}
|
||||
|
||||
function getScriptsInOrder(scripts, callback) {
|
||||
if (scripts.length === 0) {
|
||||
callback();
|
||||
return;
|
||||
}
|
||||
getScript(scripts[0], function() {
|
||||
getScriptsInOrder(scripts.slice(1), callback);
|
||||
});
|
||||
}
|
||||
|
||||
function loadScripts(urls, callback) {
|
||||
if( 'function' === typeof importScripts ) {
|
||||
importScripts.apply(null, urls);
|
||||
callback();
|
||||
} else {
|
||||
getScriptsInOrder(urls, callback);
|
||||
}
|
||||
}
|
||||
|
||||
function onJSONLoaded () {
|
||||
data = JSON.parse(this.responseText);
|
||||
var scriptsToLoad = ['lunr.js'];
|
||||
if (data.config && data.config.lang && data.config.lang.length) {
|
||||
lang = data.config.lang;
|
||||
}
|
||||
if (lang.length > 1 || lang[0] !== "en") {
|
||||
scriptsToLoad.push('lunr.stemmer.support.js');
|
||||
if (lang.length > 1) {
|
||||
scriptsToLoad.push('lunr.multi.js');
|
||||
}
|
||||
for (var i=0; i < lang.length; i++) {
|
||||
if (lang[i] != 'en') {
|
||||
scriptsToLoad.push(['lunr', lang[i], 'js'].join('.'));
|
||||
}
|
||||
}
|
||||
}
|
||||
loadScripts(scriptsToLoad, onScriptsLoaded);
|
||||
}
|
||||
|
||||
function onScriptsLoaded () {
|
||||
console.log('All search scripts loaded, building Lunr index...');
|
||||
if (data.config && data.config.separator && data.config.separator.length) {
|
||||
lunr.tokenizer.separator = new RegExp(data.config.separator);
|
||||
}
|
||||
if (data.index) {
|
||||
index = lunr.Index.load(data.index);
|
||||
data.docs.forEach(function (doc) {
|
||||
documents[doc.location] = doc;
|
||||
});
|
||||
console.log('Lunr pre-built index loaded, search ready');
|
||||
} else {
|
||||
index = lunr(function () {
|
||||
if (lang.length === 1 && lang[0] !== "en" && lunr[lang[0]]) {
|
||||
this.use(lunr[lang[0]]);
|
||||
} else if (lang.length > 1) {
|
||||
this.use(lunr.multiLanguage.apply(null, lang)); // spread operator not supported in all browsers: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator#Browser_compatibility
|
||||
}
|
||||
this.field('title');
|
||||
this.field('text');
|
||||
this.ref('location');
|
||||
|
||||
for (var i=0; i < data.docs.length; i++) {
|
||||
var doc = data.docs[i];
|
||||
this.add(doc);
|
||||
documents[doc.location] = doc;
|
||||
}
|
||||
});
|
||||
console.log('Lunr index built, search ready');
|
||||
}
|
||||
allowSearch = true;
|
||||
postMessage({allowSearch: allowSearch});
|
||||
}
|
||||
|
||||
function init () {
|
||||
var oReq = new XMLHttpRequest();
|
||||
oReq.addEventListener("load", onJSONLoaded);
|
||||
var index_path = base_path + '/search_index.json';
|
||||
if( 'function' === typeof importScripts ){
|
||||
index_path = 'search_index.json';
|
||||
}
|
||||
oReq.open("GET", index_path);
|
||||
oReq.send();
|
||||
}
|
||||
|
||||
function search (query) {
|
||||
if (!allowSearch) {
|
||||
console.error('Assets for search still loading');
|
||||
return;
|
||||
}
|
||||
|
||||
var resultDocuments = [];
|
||||
var results = index.search(query);
|
||||
for (var i=0; i < results.length; i++){
|
||||
var result = results[i];
|
||||
doc = documents[result.ref];
|
||||
doc.summary = doc.text.substring(0, 200);
|
||||
resultDocuments.push(doc);
|
||||
}
|
||||
return resultDocuments;
|
||||
}
|
||||
|
||||
if( 'function' === typeof importScripts ) {
|
||||
onmessage = function (e) {
|
||||
if (e.data.init) {
|
||||
init();
|
||||
} else if (e.data.query) {
|
||||
postMessage({ results: search(e.data.query) });
|
||||
} else {
|
||||
console.error("Worker - Unrecognized message: " + e);
|
||||
}
|
||||
};
|
||||
}
|
||||
@ -0,0 +1,33 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
|
||||
<url>
|
||||
<loc>None</loc>
|
||||
<lastmod>2020-02-21</lastmod>
|
||||
<changefreq>daily</changefreq>
|
||||
</url>
|
||||
<url>
|
||||
<loc>None</loc>
|
||||
<lastmod>2020-02-21</lastmod>
|
||||
<changefreq>daily</changefreq>
|
||||
</url>
|
||||
<url>
|
||||
<loc>None</loc>
|
||||
<lastmod>2020-02-21</lastmod>
|
||||
<changefreq>daily</changefreq>
|
||||
</url>
|
||||
<url>
|
||||
<loc>None</loc>
|
||||
<lastmod>2020-02-21</lastmod>
|
||||
<changefreq>daily</changefreq>
|
||||
</url>
|
||||
<url>
|
||||
<loc>None</loc>
|
||||
<lastmod>2020-02-21</lastmod>
|
||||
<changefreq>daily</changefreq>
|
||||
</url>
|
||||
<url>
|
||||
<loc>None</loc>
|
||||
<lastmod>2020-02-21</lastmod>
|
||||
<changefreq>daily</changefreq>
|
||||
</url>
|
||||
</urlset>
|
||||
Binary file not shown.
@ -0,0 +1,328 @@
|
||||
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<title>Usage - MIPLearn</title>
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<link rel="stylesheet" href="//use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
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<ul class="nav bs-sidenav">
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<li class="first-level active"><a href="#usage">Usage</a></li>
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||||
<li class="second-level"><a href="#installation">Installation</a></li>
|
||||
|
||||
<li class="second-level"><a href="#using-learningsolver">Using LearningSolver</a></li>
|
||||
|
||||
<li class="second-level"><a href="#describing-problem-instances">Describing problem instances</a></li>
|
||||
|
||||
<li class="second-level"><a href="#obtaining-heuristic-solutions">Obtaining heuristic solutions</a></li>
|
||||
|
||||
<li class="second-level"><a href="#saving-and-loading-solver-state">Saving and loading solver state</a></li>
|
||||
|
||||
<li class="second-level"><a href="#solving-training-instances-in-parallel">Solving training instances in parallel</a></li>
|
||||
|
||||
<li class="second-level"><a href="#current-limitations">Current Limitations</a></li>
|
||||
|
||||
</ul>
|
||||
</div></div>
|
||||
<div class="col-md-9" role="main">
|
||||
|
||||
<h1 id="usage">Usage</h1>
|
||||
<h3 id="installation">Installation</h3>
|
||||
<p>The package is currently available for Python and Pyomo. It can be installed as follows:</p>
|
||||
<pre><code class="bash">pip install git+ssh://git@github.com/iSoron/miplearn.git
|
||||
</code></pre>
|
||||
|
||||
<p>A Julia + JuMP version of the package is planned.</p>
|
||||
<h3 id="using-learningsolver">Using <code>LearningSolver</code></h3>
|
||||
<p>The main class provided by this package is <code>LearningSolver</code>, a reference learning-enhanced MIP solver which automatically extracts information from previous runs to accelerate the solution of new instances. Assuming we already have a list of instances to solve, <code>LearningSolver</code> can be used as follows:</p>
|
||||
<pre><code class="python">from miplearn import LearningSolver
|
||||
|
||||
all_instances = ... # user-provided list of instances to solve
|
||||
solver = LearningSolver()
|
||||
for instance in all_instances:
|
||||
solver.solve(instance)
|
||||
solver.fit()
|
||||
</code></pre>
|
||||
|
||||
<p>During the first call to <code>solver.solve(instance)</code>, the solver will process the instance from scratch, since no historical information is available, but it will already start gathering information. By calling <code>solver.fit()</code>, we instruct the solver to train all the internal Machine Learning models based on the information gathered so far. As this operation can be expensive, it may be performed after a larger batch of instances has been solved, instead of after every solve. After the first call to <code>solver.fit()</code>, subsequent calls to <code>solver.solve(instance)</code> will automatically use the trained Machine Learning models to accelerate the solution process.</p>
|
||||
<h3 id="describing-problem-instances">Describing problem instances</h3>
|
||||
<p>Instances to be solved by <code>LearningSolver</code> must derive from the abstract class <code>miplearn.Instance</code>. The following three abstract methods must be implemented:</p>
|
||||
<ul>
|
||||
<li><code>instance.to_model()</code>, which returns a concrete Pyomo model corresponding to the instance;</li>
|
||||
<li><code>instance.get_instance_features()</code>, which returns a 1-dimensional Numpy array of (numerical) features describing the entire instance;</li>
|
||||
<li><code>instance.get_variable_features(var, index)</code>, which returns a 1-dimensional array of (numerical) features describing a particular decision variable.</li>
|
||||
</ul>
|
||||
<p>The first method is used by <code>LearningSolver</code> to construct a concrete Pyomo model, which will be provided to the internal MIP solver. The user should keep a reference to this Pyomo model, in order to retrieve, for example, the optimal variable values.</p>
|
||||
<p>The second and third methods provide an encoding of the instance, which can be used by the ML models to make predictions. In the knapsack problem, for example, an implementation may decide to provide as instance features the average weights, average prices, number of items and the size of the knapsack. The weight and the price of each individual item could be provided as variable features. See <code>miplearn/problems/knapsack.py</code> for a concrete example.</p>
|
||||
<p>An optional method which can be implemented is <code>instance.get_variable_category(var, index)</code>, which returns a category (a string, an integer or any hashable type) for each decision variable. If two variables have the same category, <code>LearningSolver</code> will use the same internal ML model to predict the values of both variables. By default, all variables belong to the <code>"default"</code> category, and therefore only one ML model is used for all variables. If the returned category is <code>None</code>, ML predictors will ignore the variable.</p>
|
||||
<p>It is not necessary to have a one-to-one correspondence between features and problem instances. One important (and deliberate) limitation of MIPLearn, however, is that <code>get_instance_features()</code> must always return arrays of same length for all relevant instances of the problem. Similarly, <code>get_variable_features(var, index)</code> must also always return arrays of same length for all variables in each category. It is up to the user to decide how to encode variable-length characteristics of the problem into fixed-length vectors. In graph problems, for example, graph embeddings can be used to reduce the (variable-length) lists of nodes and edges into a fixed-length structure that still preserves some properties of the graph. Different instance encodings may have significant impact on performance.</p>
|
||||
<h3 id="obtaining-heuristic-solutions">Obtaining heuristic solutions</h3>
|
||||
<p>By default, <code>LearningSolver</code> uses Machine Learning to accelerate the MIP solution process, while maintaining all optimality guarantees provided by the MIP solver. In the default mode of operation, for example, predicted optimal solutions are used only as MIP starts.</p>
|
||||
<p>For more significant performance benefits, <code>LearningSolver</code> can also be configured to place additional trust in the Machine Learning predictors, by using the <code>mode="heuristic"</code> constructor argument. When operating in this mode, if a ML model is statistically shown (through <em>stratified k-fold cross validation</em>) to have exceptionally high accuracy, the solver may decide to restrict the search space based on its predictions. The parts of the solution which the ML models cannot predict accurately will still be explored using traditional (branch-and-bound) methods. For particular applications, this mode has been shown to quickly produce optimal or near-optimal solutions (see <a href="../about/#references">references</a> and <a href="../benchmark/">benchmark results</a>).</p>
|
||||
<div class="admonition danger">
|
||||
<p class="admonition-title">Danger</p>
|
||||
<p>The <code>heuristic</code> mode provides no optimality guarantees, and therefore should only be used if the solver is first trained on a large and representative set of training instances. Training on a small or non-representative set of instances may produce low-quality solutions, or make the solver incorrectly classify new instances as infeasible.</p>
|
||||
</div>
|
||||
<h3 id="saving-and-loading-solver-state">Saving and loading solver state</h3>
|
||||
<p>After solving a large number of training instances, it may be desirable to save the current state of <code>LearningSolver</code> to disk, so that the solver can still use the acquired knowledge after the application restarts. This can be accomplished by using the methods <code>solver.save_state(filename)</code> and <code>solver.load_state(filename)</code>, as the following example illustrates:</p>
|
||||
<pre><code class="python">from miplearn import LearningSolver
|
||||
|
||||
solver = LearningSolver()
|
||||
for instance in some_instances:
|
||||
solver.solve(instance)
|
||||
solver.fit()
|
||||
solver.save_state("/tmp/state.bin")
|
||||
|
||||
# Application restarts...
|
||||
|
||||
solver = LearningSolver()
|
||||
solver.load_state("/tmp/state.bin")
|
||||
for instance in more_instances:
|
||||
solver.solve(instance)
|
||||
</code></pre>
|
||||
|
||||
<p>In addition to storing the training data, <code>save_state</code> also stores all trained ML models. Therefore, if the the models were trained before saving the state to disk, it is not necessary to train them again after loading.</p>
|
||||
<h3 id="solving-training-instances-in-parallel">Solving training instances in parallel</h3>
|
||||
<p>In many situations, training instances can be solved in parallel to accelerate the training process. <code>LearningSolver</code> provides the method <code>parallel_solve(instances)</code> to easily achieve this:</p>
|
||||
<pre><code class="python">from miplearn import LearningSolver
|
||||
|
||||
# Training phase...
|
||||
solver = LearningSolver(...) # training solver parameters
|
||||
solver.parallel_solve(training_instances, n_jobs=4)
|
||||
solver.fit()
|
||||
solver.save_state("/tmp/data.bin")
|
||||
|
||||
# Test phase...
|
||||
solver = LearningSolver(...) # test solver parameters
|
||||
solver.load_state("/tmp/data.bin")
|
||||
solver.solve(test_instance)
|
||||
</code></pre>
|
||||
|
||||
<p>After all training instances have been solved in parallel, the ML models can be trained and saved to disk as usual, using <code>fit</code> and <code>save_state</code>, as explained in the previous subsections.</p>
|
||||
<h3 id="current-limitations">Current Limitations</h3>
|
||||
<ul>
|
||||
<li>Only binary and continuous decision variables are currently supported.</li>
|
||||
<li>Solver callbacks (lazy constraints, cutting planes) are not currently supported.</li>
|
||||
<li>Only <code>gurobi_persistent</code> is currently fully supported by all solver components. Other solvers may work if some components are disabled.</li>
|
||||
</ul></div>
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