Package com.spotify.zoltar

Interface FeatureExtractor<ModelT extends Model<?>,InputT,VectorT>

Type Parameters:

ModelT - underlying type of the Model.

InputT - type of the input to feature extraction.

VectorT - type of feature extraction result.

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface FeatureExtractor<ModelT extends Model<?>,InputT,VectorT>

Functional interface for feature extraction. Should be used together with Predictor. In most cases you should use the static factory methods.

Method Summary

Modifier and Type	Method	Description
static <ModelT extends Model<?>,InputT,VectorT> FeatureExtractor<ModelT,InputT,VectorT>	create(FeatureExtractFns.ExtractFn<InputT,VectorT> fn)	Creates an extractor given a generic FeatureExtractFns.ExtractFn, consider using Featran and FeatranExtractFns whenever possible.
List<Vector<InputT,VectorT>>	extract(ModelT model, InputT... input)	Functional interface.
default <C extends FeatureExtractor<ModelT,InputT,VectorT>> C	with(Function<FeatureExtractor<ModelT,InputT,VectorT>,C> fn)

Method Detail

create

static <ModelT extends Model<?>,InputT,VectorT> FeatureExtractor<ModelT,InputT,VectorT> create(FeatureExtractFns.ExtractFn<InputT,VectorT> fn)

Creates an extractor given a generic FeatureExtractFns.ExtractFn, consider using Featran and FeatranExtractFns whenever possible.

Type Parameters:

InputT - type of the input to feature extraction.

VectorT - type of feature extraction result.

Parameters:

fn - FeatureExtractFns.ExtractFn extraction function

extract

List<Vector<InputT,VectorT>> extract(ModelT model,
                                           InputT... input)
                                    throws Exception

Functional interface. Perform the feature extraction given the input.

Throws:

Exception

with

default <C extends FeatureExtractor<ModelT,InputT,VectorT>> C with(Function<FeatureExtractor<ModelT,InputT,VectorT>,C> fn)