| /* |
| * 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.luke.models.search; |
| |
| /** |
| * Configurations for Similarity. |
| */ |
| public final class SimilarityConfig { |
| |
| private final boolean useClassicSimilarity; |
| |
| /* BM25Similarity parameters */ |
| |
| private final float k1; |
| |
| private final float b; |
| |
| /* Common parameters */ |
| |
| private final boolean discountOverlaps; |
| |
| /** Builder for {@link SimilarityConfig} */ |
| public static class Builder { |
| private boolean useClassicSimilarity = false; |
| private float k1 = 1.2f; |
| private float b = 0.75f; |
| private boolean discountOverlaps = true; |
| |
| public Builder useClassicSimilarity(boolean val) { |
| useClassicSimilarity = val; |
| return this; |
| } |
| |
| public Builder k1(float val) { |
| k1 = val; |
| return this; |
| } |
| |
| public Builder b(float val) { |
| b = val; |
| return this; |
| } |
| |
| public Builder discountOverlaps (boolean val) { |
| discountOverlaps = val; |
| return this; |
| } |
| |
| public SimilarityConfig build() { |
| return new SimilarityConfig(this); |
| } |
| } |
| |
| private SimilarityConfig(Builder builder) { |
| this.useClassicSimilarity = builder.useClassicSimilarity; |
| this.k1 = builder.k1; |
| this.b = builder.b; |
| this.discountOverlaps = builder.discountOverlaps; |
| } |
| |
| public boolean isUseClassicSimilarity() { |
| return useClassicSimilarity; |
| } |
| |
| public float getK1() { |
| return k1; |
| } |
| |
| public float getB() { |
| return b; |
| } |
| |
| public boolean isDiscountOverlaps() { |
| return discountOverlaps; |
| } |
| |
| public String toString() { |
| return "SimilarityConfig: [" + |
| " use classic similarity=" + useClassicSimilarity + ";" + |
| " discount overlaps=" + discountOverlaps + ";" + |
| " k1=" + k1 + ";" + |
| " b=" + b + ";" + |
| "]"; |
| } |
| } |