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Load TransformerChain model file in ModelFileUtils #4110

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ganik merged 3 commits into from
Aug 20, 2019
Merged

Load TransformerChain model file in ModelFileUtils #4110

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Load TransformerChain model file in ModelFileUtils
najeeb-kazmi Aug 13, 2019
710a295
Add test
najeeb-kazmi Aug 14, 2019
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najeeb-kazmi Aug 14, 2019
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11 changes: 11 additions & 0 deletions src/Microsoft.ML.Data/Utilities/ModelFileUtils.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,8 @@ internal static class ModelFileUtils
{
public const string DirPredictor = "Predictor";
public const string DirDataLoaderModel = "DataLoaderModel";
public const string DirTransformerChain = "TransformerChain";
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public const string SchemaEntryName = "Schema";
// ResultsProcessor needs access to this constant.
public const string DirTrainingInfo = "TrainingInfo";

Expand Down Expand Up @@ -64,6 +66,15 @@ public static IDataView LoadPipeline(IHostEnvironment env, RepositoryReader rep,
Contracts.CheckValue(env, nameof(env));
env.CheckValue(rep, nameof(rep));
env.CheckValue(files, nameof(files));

var entry = rep.OpenEntryOrNull(SchemaEntryName);
if (entry != null)
{
var loader = new BinaryLoader(env, new BinaryLoader.Arguments(), entry.Stream);
ModelLoadContext.LoadModel<ITransformer, SignatureLoadModel>(env, out var transformerChain, rep, DirTransformerChain);
return transformerChain.Transform(loader);
}

using (var ent = rep.OpenEntry(DirDataLoaderModel, ModelLoadContext.ModelStreamName))
{
ILegacyDataLoader loader;
Expand Down