cpoerschke commented on code in PR #13749: URL: https://github.com/apache/lucene/pull/13749#discussion_r1753475412
########## lucene/core/src/java/org/apache/lucene/search/similarities/RawTFSimilarity.java: ########## @@ -0,0 +1,76 @@ +/* + * 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.search.similarities; + +import org.apache.lucene.index.FieldInvertState; +import org.apache.lucene.index.IndexOptions; +import org.apache.lucene.search.CollectionStatistics; +import org.apache.lucene.search.TermStatistics; +import org.apache.lucene.util.SmallFloat; + +/** Similarity that returns the raw TF as score. */ +public class RawTFSimilarity extends Similarity { + private final boolean discountOverlaps; + + /** + * RawTFSimilarity with these default values: + * + * <ul> + * <li>{@code discountOverlaps = true} + * </ul> + */ + public RawTFSimilarity() { + this(true); + } + + /** + * @param discountOverlaps True if overlap tokens (tokens with a position of increment of zero) + * are discounted from the document's length. + */ + public RawTFSimilarity(boolean discountOverlaps) { + this.discountOverlaps = discountOverlaps; + } + + /** Returns true if overlap tokens are discounted from the document's length. */ + public boolean getDiscountOverlaps() { + return discountOverlaps; + } + + @Override + public long computeNorm(FieldInvertState state) { + final int numTerms; + if (state.getIndexOptions() == IndexOptions.DOCS && state.getIndexCreatedVersionMajor() >= 8) { + numTerms = state.getUniqueTermCount(); + } else if (discountOverlaps) { + numTerms = state.getLength() - state.getNumOverlap(); + } else { + numTerms = state.getLength(); + } + return SmallFloat.intToByte4(numTerms); Review Comment: Marking as draft here until the #13757 is available and used here. -- 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. To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org 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
