artemmalykh commented on a change in pull request #5767: [ML] IGNITE-10573:
Consistent API for Ensemble training
URL: https://github.com/apache/ignite/pull/5767#discussion_r247885899
##########
File path:
modules/ml/src/main/java/org/apache/ignite/ml/trainers/DatasetTrainer.java
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@@ -362,4 +362,29 @@ public EmptyDatasetException() {
}
}
+ /**
+ * Returns the trainer which returns identity model.
+ *
+ * @param <I> Type of model input.
+ * @param <L> Type of labels in dataset.
+ * @return Trainer which returns identity model.
+ */
+ public static <I, L> DatasetTrainer<IgniteModel<I, I>, L>
identityTrainer() {
+ return new DatasetTrainer<IgniteModel<I, I>, L>() {
+ @Override public <K, V> IgniteModel<I, I> fit(DatasetBuilder<K, V>
datasetBuilder,
+ IgniteBiFunction<K, V, Vector> featureExtractor,
+ IgniteBiFunction<K, V, L> lbExtractor) {
+ return x -> x;
+ }
+
+ @Override protected boolean checkState(IgniteModel<I, I> mdl) {
+ return true;
+ }
+
+ @Override protected <K, V> IgniteModel<I, I>
updateModel(IgniteModel<I, I> mdl, DatasetBuilder<K, V> datasetBuilder,
Review comment:
Fixed.
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