Package org.apache.solr.client.solrj.io.eval

Class KnnEvaluator

java.lang.Object

org.apache.solr.client.solrj.io.eval.RecursiveEvaluator

org.apache.solr.client.solrj.io.eval.RecursiveObjectEvaluator

org.apache.solr.client.solrj.io.eval.KnnEvaluator

All Implemented Interfaces:

Serializable, ManyValueWorker, StreamEvaluator, ValueWorker, Expressible

public class KnnEvaluator
extends RecursiveObjectEvaluator
implements ManyValueWorker

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	KnnEvaluator.Neighbor

Field Summary

Fields

Modifier and Type	Field	Description
protected static final long	serialVersionUID

Fields inherited from class org.apache.solr.client.solrj.io.eval.RecursiveEvaluator

constructingFactory, containedEvaluators, nodeId, streamContext

Constructor Summary

Constructors

Constructor	Description
KnnEvaluator(StreamExpression expression, StreamFactory factory)

Method Summary

Modifier and Type	Method	Description
Object	doWork(Object... values)
static Matrix	search(Matrix observations, double[] vec, int k, org.apache.commons.math3.ml.distance.DistanceMeasure distanceMeasure)

Methods inherited from class org.apache.solr.client.solrj.io.eval.RecursiveEvaluator

evaluate, getStreamContext, normalizeInputType, normalizeOutputType, recursivelyEvaluate, setStreamContext, toExplanation, toExpression

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.solr.client.solrj.io.eval.StreamEvaluator

evaluateOverContext

Field Details

serialVersionUID

protected static final long serialVersionUID

See Also:

• Constant Field Values

Constructor Details

KnnEvaluator

public KnnEvaluator(StreamExpression expression,
 StreamFactory factory)
             throws IOException

Throws:

IOException

Method Details

doWork

public Object doWork(Object... values)
              throws IOException

Specified by:

doWork in interface ManyValueWorker

Specified by:

doWork in interface ValueWorker

Throws:

IOException

search

public static Matrix search(Matrix observations,
 double[] vec,
 int k,
 org.apache.commons.math3.ml.distance.DistanceMeasure distanceMeasure)