| /* |
| * 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. |
| */ |
| |
| /** |
| * <p> |
| * This package contains the main logic for performing the reranking using |
| * a Learning to Rank model. |
| * </p> |
| * <p> |
| * A model will be applied on each document through a {@link org.apache.solr.ltr.LTRScoringQuery}, a |
| * subclass of {@link org.apache.lucene.search.Query}. As a normal query, |
| * the learned model will produce a new score |
| * for each document reranked. |
| * </p> |
| * <p> |
| * A {@link org.apache.solr.ltr.LTRScoringQuery} is created by providing an instance of |
| * {@link org.apache.solr.ltr.model.LTRScoringModel}. An instance of |
| * {@link org.apache.solr.ltr.model.LTRScoringModel} |
| * defines how to combine the features in order to create a new |
| * score for a document. A new Learning to Rank model is plugged |
| * into the framework by extending {@link org.apache.solr.ltr.model.LTRScoringModel}, |
| * (see for example {@link org.apache.solr.ltr.model.MultipleAdditiveTreesModel} and {@link org.apache.solr.ltr.model.LinearModel}). |
| * </p> |
| * <p> |
| * The {@link org.apache.solr.ltr.LTRScoringQuery} will take care of computing the values of |
| * all the features (see {@link org.apache.solr.ltr.feature.Feature}) and then will delegate the final score |
| * generation to the {@link org.apache.solr.ltr.model.LTRScoringModel}, by calling the method |
| * {@link org.apache.solr.ltr.model.LTRScoringModel#score(float[] modelFeatureValuesNormalized) score(float[] modelFeatureValuesNormalized)}. |
| * </p> |
| */ |
| package org.apache.solr.ltr; |
