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Anserini: Regressions for FIRE 2012 Monolingual English

This page documents regression experiments for FIRE 2012 ad hoc retrieval (Monolingual English). The document collection can be found in FIRE data page.

The exact configurations for these regressions are stored in this YAML file. Note that this page is automatically generated from this template as part of Anserini's regression pipeline, so do not modify this page directly; modify the template instead.

Indexing

Typical indexing command:

nohup sh target/appassembler/bin/IndexCollection -collection CleanTrecCollection -input /path/to/fire12-en \
 -index lucene-index.fire12-en.pos+docvectors+rawdocs -generator DefaultLuceneDocumentGenerator -threads 16 \
 -storePositions -storeDocvectors -storeRaw -language en >& log.fire12-en.pos+docvectors+rawdocs &

The directory /path/to/fire12-en/ should be a directory containing the collection, containing en_BDNews24 and en_TheTelegraph_2001-2010 directories. There should be 392,577 documents in total.

For additional details, see explanation of common indexing options.

Retrieval

Topics and qrels are stored in src/main/resources/topics-and-qrels/, downloaded from the FIRE data page:

After indexing has completed, you should be able to perform retrieval as follows:

nohup target/appassembler/bin/SearchCollection -index lucene-index.fire12-en.pos+docvectors+rawdocs \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.fire12en.176-225.txt \
 -language en -bm25 -output run.fire12-en.bm25.topics.fire12en.176-225.txt &

Evaluation can be performed using trec_eval:

eval/trec_eval.9.0.4/trec_eval -m map -m P.20 -m ndcg_cut.20 src/main/resources/topics-and-qrels/qrels.fire12en.176-225.txt run.fire12-en.bm25.topics.fire12en.176-225.txt

Effectiveness

With the above commands, you should be able to replicate the following results:

MAP BM25
FIRE 2012 (Monolingual English) 0.3713
P20 BM25
FIRE 2012 (Monolingual English) 0.4970
NDCG20 BM25
FIRE 2012 (Monolingual English) 0.5420