nitirajrathore commented on a change in pull request #83: URL: https://github.com/apache/lucene/pull/83#discussion_r616403759
########## File path: lucene/test-framework/src/java/org/apache/lucene/util/FullKnn.java ########## @@ -0,0 +1,254 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.lucene.util; + +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.nio.FloatBuffer; +import java.nio.channels.FileChannel; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.ArrayList; +import java.util.List; +import java.util.Locale; +import java.util.concurrent.CompletableFuture; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.Executors; +import java.util.concurrent.TimeUnit; +import java.util.stream.Collectors; +import org.apache.lucene.index.VectorValues; + +/** + * A utility class to calculate the Full KNN / Exact KNN over a set of query vectors and document + * vectors. + */ +public class FullKnn { + + private final int dim; + private final int topK; + private final VectorValues.SearchStrategy searchStrategy; + private final boolean quiet; + + public FullKnn(int dim, int topK, VectorValues.SearchStrategy searchStrategy, boolean quiet) { + this.dim = dim; + this.topK = topK; + this.searchStrategy = searchStrategy; + this.quiet = quiet; + } + + /** internal object to track KNN calculation for one query */ + private static class KnnJob { + public int currDocIndex; + float[] queryVector; + float[] currDocVector; + int queryIndex; + private LongHeap queue; + FloatBuffer docVectors; + VectorValues.SearchStrategy searchStrategy; + + public KnnJob( + int queryIndex, float[] queryVector, int topK, VectorValues.SearchStrategy searchStrategy) { + this.queryIndex = queryIndex; + this.queryVector = queryVector; + this.currDocVector = new float[queryVector.length]; + if (searchStrategy.reversed) { + queue = LongHeap.create(LongHeap.Order.MAX, topK); + } else { + queue = LongHeap.create(LongHeap.Order.MIN, topK); + } + this.searchStrategy = searchStrategy; + } + + public void execute() { + while (this.docVectors.hasRemaining()) { + this.docVectors.get(this.currDocVector); Review comment: Done. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org
