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Package org.apache.lucene.benchmark.quality

Search Quality Benchmarking.

See: Description

Package org.apache.lucene.benchmark.quality Description

Search Quality Benchmarking.

This package allows to benchmark search quality of a Lucene application.

In order to use this package you should provide:

For benchmarking TREC collections with TREC QRels, take a look at the trec package.

Here is a sample code used to run the TREC 2006 queries 701-850 on the .Gov2 collection:

     File topicsFile = new File("topics-701-850.txt");
     File qrelsFile = new File("qrels-701-850.txt");
     IndexReader ir = DirectoryReader.open(directory):
     IndexSearcher searcher = new IndexSearcher(ir);
 
     int maxResults = 1000;
     String docNameField = "docname"; 
     
     PrintWriter logger = new PrintWriter(System.out,true); 
 
     // use trec utilities to read trec topics into quality queries
     TrecTopicsReader qReader = new TrecTopicsReader();
     QualityQuery qqs[] = qReader.readQueries(new BufferedReader(new FileReader(topicsFile)));
     
     // prepare judge, with trec utilities that read from a QRels file
     Judge judge = new TrecJudge(new BufferedReader(new FileReader(qrelsFile)));
     
     // validate topics & judgments match each other
     judge.validateData(qqs, logger);
     
     // set the parsing of quality queries into Lucene queries.
     QualityQueryParser qqParser = new SimpleQQParser("title", "body");
     
     // run the benchmark
     QualityBenchmark qrun = new QualityBenchmark(qqs, qqParser, searcher, docNameField);
     SubmissionReport submitLog = null;
     QualityStats stats[] = qrun.execute(maxResults, judge, submitLog, logger);
     
     // print an average sum of the results
     QualityStats avg = QualityStats.average(stats);
     avg.log("SUMMARY",2,logger, "  ");
 

Some immediate ways to modify this program to your needs are:

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