use of io.anserini.ltr.TweetsLtrDataGenerator in project Anserini by castorini.
the class SearchTweets method main.
public static void main(String[] args) throws Exception {
long curTime = System.nanoTime();
SearchArgs searchArgs = new SearchArgs();
CmdLineParser parser = new CmdLineParser(searchArgs, ParserProperties.defaults().withUsageWidth(90));
try {
parser.parseArgument(args);
} catch (CmdLineException e) {
System.err.println(e.getMessage());
parser.printUsage(System.err);
System.err.println("Example: SearchTweets" + parser.printExample(OptionHandlerFilter.REQUIRED));
return;
}
LOG.info("Reading index at " + searchArgs.index);
Directory dir;
if (searchArgs.inmem) {
LOG.info("Using MMapDirectory with preload");
dir = new MMapDirectory(Paths.get(searchArgs.index));
((MMapDirectory) dir).setPreload(true);
} else {
LOG.info("Using default FSDirectory");
dir = FSDirectory.open(Paths.get(searchArgs.index));
}
IndexReader reader = DirectoryReader.open(dir);
IndexSearcher searcher = new IndexSearcher(reader);
if (searchArgs.ql) {
LOG.info("Using QL scoring model");
searcher.setSimilarity(new LMDirichletSimilarity(searchArgs.mu));
} else if (searchArgs.bm25) {
LOG.info("Using BM25 scoring model");
searcher.setSimilarity(new BM25Similarity(searchArgs.k1, searchArgs.b));
} else {
LOG.error("Error: Must specify scoring model!");
System.exit(-1);
}
RerankerCascade cascade = new RerankerCascade();
if (searchArgs.rm3) {
cascade.add(new Rm3Reranker(IndexTweets.ANALYZER, StatusField.TEXT.name, "src/main/resources/io/anserini/rerank/rm3/rm3-stoplist.twitter.txt"));
cascade.add(new RemoveRetweetsTemporalTiebreakReranker());
} else {
cascade.add(new RemoveRetweetsTemporalTiebreakReranker());
}
if (!searchArgs.model.isEmpty() && searchArgs.extractors != null) {
LOG.debug(String.format("Ranklib model used, modeled loaded from %s", searchArgs.model));
cascade.add(new RankLibReranker(searchArgs.model, StatusField.TEXT.name, searchArgs.extractors));
}
FeatureExtractors extractorChain = null;
if (searchArgs.extractors != null) {
extractorChain = FeatureExtractors.loadExtractor(searchArgs.extractors);
}
if (searchArgs.dumpFeatures) {
PrintStream out = new PrintStream(searchArgs.featureFile);
Qrels qrels = new Qrels(searchArgs.qrels);
cascade.add(new TweetsLtrDataGenerator(out, qrels, extractorChain));
}
MicroblogTopicSet topics = MicroblogTopicSet.fromFile(new File(searchArgs.topics));
PrintStream out = new PrintStream(new FileOutputStream(new File(searchArgs.output)));
LOG.info("Writing output to " + searchArgs.output);
LOG.info("Initialized complete! (elapsed time = " + (System.nanoTime() - curTime) / 1000000 + "ms)");
long totalTime = 0;
int cnt = 0;
for (MicroblogTopic topic : topics) {
long curQueryTime = System.nanoTime();
Query filter = LongPoint.newRangeQuery(StatusField.ID.name, 0L, topic.getQueryTweetTime());
Query query = AnalyzerUtils.buildBagOfWordsQuery(StatusField.TEXT.name, IndexTweets.ANALYZER, topic.getQuery());
BooleanQuery.Builder builder = new BooleanQuery.Builder();
builder.add(filter, BooleanClause.Occur.FILTER);
builder.add(query, BooleanClause.Occur.MUST);
Query q = builder.build();
TopDocs rs = searcher.search(q, searchArgs.hits);
List<String> queryTokens = AnalyzerUtils.tokenize(IndexTweets.ANALYZER, topic.getQuery());
RerankerContext context = new RerankerContext(searcher, query, topic.getId(), topic.getQuery(), queryTokens, StatusField.TEXT.name, filter);
ScoredDocuments docs = cascade.run(ScoredDocuments.fromTopDocs(rs, searcher), context);
for (int i = 0; i < docs.documents.length; i++) {
String qid = topic.getId().replaceFirst("^MB0*", "");
out.println(String.format("%s Q0 %s %d %f %s", qid, docs.documents[i].getField(StatusField.ID.name).numericValue(), (i + 1), docs.scores[i], searchArgs.runtag));
}
long qtime = (System.nanoTime() - curQueryTime) / 1000000;
LOG.info("Query " + topic.getId() + " (elapsed time = " + qtime + "ms)");
totalTime += qtime;
cnt++;
}
LOG.info("All queries completed!");
LOG.info("Total elapsed time = " + totalTime + "ms");
LOG.info("Average query latency = " + (totalTime / cnt) + "ms");
reader.close();
out.close();
}
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