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Anserini: Experiments on Disks 4 & 5 (Robust04)

Indexing

Typical indexing command:

nohup sh target/appassembler/bin/IndexCollection -collection TrecCollection \
-generator JsoupGenerator -threads 16 -input /path/to/robust04 -index \
lucene-index.robust04.pos+docvectors+rawdocs -storePositions -storeDocvectors \
-storeRawDocs >& log.robust04.pos+docvectors+rawdocs &

The directory /path/to/disk45/ should be the root directory of Disk4 and Disk5 collection; inside each there should be subdirectories like ft, fr94. Note that Anserini ignores the cr folder when indexing, which is the standard configuration.

For additional details, see explanation of common indexing options.

Retrieval

Topics and qrels are stored in src/main/resources/topics-and-qrels/, downloaded from NIST:

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

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.robust04.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.robust04.301-450.601-700.txt -output run.robust04.bm25.topics.robust04.301-450.601-700.txt -bm25 &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.robust04.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.robust04.301-450.601-700.txt -output run.robust04.bm25+rm3.topics.robust04.301-450.601-700.txt -bm25 -rm3 &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.robust04.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.robust04.301-450.601-700.txt -output run.robust04.bm25+ax.topics.robust04.301-450.601-700.txt -bm25 -axiom -rerankCutoff 20 -axiom.deterministic &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.robust04.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.robust04.301-450.601-700.txt -output run.robust04.ql.topics.robust04.301-450.601-700.txt -ql &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.robust04.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.robust04.301-450.601-700.txt -output run.robust04.ql+rm3.topics.robust04.301-450.601-700.txt -ql -rm3 &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.robust04.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.robust04.301-450.601-700.txt -output run.robust04.ql+ax.topics.robust04.301-450.601-700.txt -ql -axiom -rerankCutoff 20 -axiom.deterministic &

Evaluation can be performed using trec_eval:

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.robust2004.txt run.robust04.bm25.topics.robust04.301-450.601-700.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.robust2004.txt run.robust04.bm25+rm3.topics.robust04.301-450.601-700.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.robust2004.txt run.robust04.bm25+ax.topics.robust04.301-450.601-700.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.robust2004.txt run.robust04.ql.topics.robust04.301-450.601-700.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.robust2004.txt run.robust04.ql+rm3.topics.robust04.301-450.601-700.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.robust2004.txt run.robust04.ql+ax.topics.robust04.301-450.601-700.txt

Effectiveness

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

MAP BM25 BM25+RM3 BM25+AX QL QL+RM3 QL+AX
All Topics 0.2531 0.2903 0.2895 0.2467 0.2747 0.2774
P30 BM25 BM25+RM3 BM25+AX QL QL+RM3 QL+AX
All Topics 0.3102 0.3365 0.3333 0.3079 0.3232 0.3229

Replication Log

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