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Anserini: Experiments on Gov2

Indexing

Typical indexing command:

nohup sh target/appassembler/bin/IndexCollection -collection TrecwebCollection \
-generator JsoupGenerator -threads 44 -input /path/to/gov2 -index \
lucene-index.gov2.pos+docvectors+rawdocs -storePositions -storeDocvectors \
-storeRawDocs >& log.gov2.pos+docvectors+rawdocs &

The directory /path/to/gov2/ should be the root directory of Gov2 collection, i.e., ls /path/to/gov2/ should bring up a bunch of subdirectories, GX000 to GX272.

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.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.701-750.txt -output run.gov2.bm25.topics.701-750.txt -bm25 &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.751-800.txt -output run.gov2.bm25.topics.751-800.txt -bm25 &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.801-850.txt -output run.gov2.bm25.topics.801-850.txt -bm25 &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.701-750.txt -output run.gov2.bm25+rm3.topics.701-750.txt -bm25 -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.751-800.txt -output run.gov2.bm25+rm3.topics.751-800.txt -bm25 -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.801-850.txt -output run.gov2.bm25+rm3.topics.801-850.txt -bm25 -rm3 &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.701-750.txt -output run.gov2.bm25+ax.topics.701-750.txt -bm25 -axiom -axiom.beta 0.1 -rerankCutoff 20 -axiom.deterministic &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.751-800.txt -output run.gov2.bm25+ax.topics.751-800.txt -bm25 -axiom -axiom.beta 0.1 -rerankCutoff 20 -axiom.deterministic &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.801-850.txt -output run.gov2.bm25+ax.topics.801-850.txt -bm25 -axiom -axiom.beta 0.1 -rerankCutoff 20 -axiom.deterministic &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.701-750.txt -output run.gov2.ql.topics.701-750.txt -ql &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.751-800.txt -output run.gov2.ql.topics.751-800.txt -ql &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.801-850.txt -output run.gov2.ql.topics.801-850.txt -ql &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.701-750.txt -output run.gov2.ql+rm3.topics.701-750.txt -ql -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.751-800.txt -output run.gov2.ql+rm3.topics.751-800.txt -ql -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.801-850.txt -output run.gov2.ql+rm3.topics.801-850.txt -ql -rm3 &

nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.701-750.txt -output run.gov2.ql+ax.topics.701-750.txt -ql -axiom -rerankCutoff 20 -axiom.beta 0.1 -axiom.deterministic &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.751-800.txt -output run.gov2.ql+ax.topics.751-800.txt -ql -axiom -rerankCutoff 20 -axiom.beta 0.1 -axiom.deterministic &
nohup target/appassembler/bin/SearchCollection -topicreader Trec -index lucene-index.gov2.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.801-850.txt -output run.gov2.ql+ax.topics.801-850.txt -ql -axiom -rerankCutoff 20 -axiom.beta 0.1 -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.701-750.txt run.gov2.bm25.topics.701-750.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.751-800.txt run.gov2.bm25.topics.751-800.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.801-850.txt run.gov2.bm25.topics.801-850.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.701-750.txt run.gov2.bm25+rm3.topics.701-750.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.751-800.txt run.gov2.bm25+rm3.topics.751-800.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.801-850.txt run.gov2.bm25+rm3.topics.801-850.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.701-750.txt run.gov2.bm25+ax.topics.701-750.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.751-800.txt run.gov2.bm25+ax.topics.751-800.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.801-850.txt run.gov2.bm25+ax.topics.801-850.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.701-750.txt run.gov2.ql.topics.701-750.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.751-800.txt run.gov2.ql.topics.751-800.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.801-850.txt run.gov2.ql.topics.801-850.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.701-750.txt run.gov2.ql+rm3.topics.701-750.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.751-800.txt run.gov2.ql+rm3.topics.751-800.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.801-850.txt run.gov2.ql+rm3.topics.801-850.txt

eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.701-750.txt run.gov2.ql+ax.topics.701-750.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.751-800.txt run.gov2.ql+ax.topics.751-800.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.801-850.txt run.gov2.ql+ax.topics.801-850.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
TREC 2004 Terabyte Track: Topics 701-750 0.2689 0.2844 0.2665 0.2681 0.2708 0.2666
TREC 2005 Terabyte Track: Topics 751-800 0.3390 0.3820 0.3664 0.3303 0.3559 0.3646
TREC 2006 Terabyte Track: Topics 801-850 0.3080 0.3377 0.3069 0.2996 0.3154 0.3084
P30 BM25 BM25+RM3 BM25+AX QL QL+RM3 QL+AX
TREC 2004 Terabyte Track: Topics 701-750 0.4864 0.5190 0.4986 0.4755 0.4925 0.4932
TREC 2005 Terabyte Track: Topics 751-800 0.5540 0.5920 0.5933 0.5347 0.5620 0.5840
TREC 2006 Terabyte Track: Topics 801-850 0.4907 0.5160 0.5033 0.4720 0.4847 0.4920
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