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[AutoML] If first three iterations all fail, short-circuit AutoML experiment #3591

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merged 3 commits into from
Apr 26, 2019
Merged

[AutoML] If first three iterations all fail, short-circuit AutoML experiment #3591

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c14a367
If first three iterations all fail, short-circuit AutoML experiment
daholste Apr 25, 2019
931631a
throw exception if first 3 runs failed
daholste Apr 26, 2019
1530f08
rev error message
daholste Apr 26, 2019
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6 changes: 6 additions & 0 deletions src/Microsoft.ML.Auto/Experiment/Experiment.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,12 @@ public IList<TRunDetail> Execute()
break;
}

// If after third run, all runs have failed so far, throw exception
if (_history.Count() == 3 && _history.All(r => !r.RunSucceded))
{
throw new InvalidOperationException($"Training failed with the exception: {_history.Last().Exception}");
}

} while (_history.Count < _experimentSettings.MaxModels &&
!_experimentSettings.CancellationToken.IsCancellationRequested &&
stopwatch.Elapsed.TotalSeconds < _experimentSettings.MaxExperimentTimeInSeconds);
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1 change: 1 addition & 0 deletions ...soft.ML.Auto/Experiment/SuggestedPipelineRunDetails/SuggestedPipelineCrossValRunDetail.cs
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Expand Up @@ -42,6 +42,7 @@ internal SuggestedPipelineCrossValRunDetail(SuggestedPipeline pipeline,
IEnumerable<SuggestedPipelineTrainResult<TMetrics>> results) : base(pipeline, score, runSucceeded)
{
Results = results;
Exception = Results.Select(r => r.Exception).FirstOrDefault(e => e != null);
}

public CrossValidationRunDetail<TMetrics> ToIterationResult(IEstimator<ITransformer> preFeaturizer)
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3 changes: 2 additions & 1 deletion src/Microsoft.ML.Auto/Experiment/SuggestedPipelineRunDetails/SuggestedPipelineRunDetail.cs
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Expand Up @@ -12,6 +12,8 @@ internal class SuggestedPipelineRunDetail
public readonly bool RunSucceded;
public readonly double Score;

public Exception Exception { get; set; }

public SuggestedPipelineRunDetail(SuggestedPipeline pipeline, double score, bool runSucceeded)
{
Pipeline = pipeline;
Expand All @@ -34,7 +36,6 @@ internal class SuggestedPipelineRunDetail<TMetrics> : SuggestedPipelineRunDetail
{
public readonly TMetrics ValidationMetrics;
public readonly ModelContainer ModelContainer;
public readonly Exception Exception;

internal SuggestedPipelineRunDetail(SuggestedPipeline pipeline,
double score,
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