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Anserini: Regressions for Wt10g

This page describes regressions for the TREC-9 Web Track and the TREC 2001 Web Track, which uses the Wt10g collection. 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 TrecwebCollection \
 -input /path/to/wt10g \
 -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -generator DefaultLuceneDocumentGenerator \
 -threads 16 -storePositions -storeDocvectors -storeRaw \
  >& logs/log.wt10g &

The directory /path/to/wt10g/ should be the root directory of the Wt10g collection, containing a bunch of subdirectories, WTX001 to WTX104.

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 -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.adhoc.451-550.txt \
 -output runs/run.wt10g.bm25.topics.adhoc.451-550.txt \
 -bm25 &

nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.adhoc.451-550.txt \
 -output runs/run.wt10g.bm25+rm3.topics.adhoc.451-550.txt \
 -bm25 -rm3 &

nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.adhoc.451-550.txt \
 -output runs/run.wt10g.bm25+ax.topics.adhoc.451-550.txt \
 -bm25 -axiom -axiom.beta 0.1 -axiom.deterministic -rerankCutoff 20 &

nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.adhoc.451-550.txt \
 -output runs/run.wt10g.ql.topics.adhoc.451-550.txt \
 -qld &

nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.adhoc.451-550.txt \
 -output runs/run.wt10g.ql+rm3.topics.adhoc.451-550.txt \
 -qld -rm3 &

nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.wt10g.pos+docvectors+raw \
 -topicreader Trec -topics src/main/resources/topics-and-qrels/topics.adhoc.451-550.txt \
 -output runs/run.wt10g.ql+ax.topics.adhoc.451-550.txt \
 -qld -axiom -axiom.beta 0.1 -axiom.deterministic -rerankCutoff 20 &

Evaluation can be performed using trec_eval:

tools/eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.adhoc.451-550.txt runs/run.wt10g.bm25.topics.adhoc.451-550.txt

tools/eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.adhoc.451-550.txt runs/run.wt10g.bm25+rm3.topics.adhoc.451-550.txt

tools/eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.adhoc.451-550.txt runs/run.wt10g.bm25+ax.topics.adhoc.451-550.txt

tools/eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.adhoc.451-550.txt runs/run.wt10g.ql.topics.adhoc.451-550.txt

tools/eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.adhoc.451-550.txt runs/run.wt10g.ql+rm3.topics.adhoc.451-550.txt

tools/eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.adhoc.451-550.txt runs/run.wt10g.ql+ax.topics.adhoc.451-550.txt

Effectiveness

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

MAP BM25 +RM3 +Ax QL +RM3 +Ax
Wt10g (Topics 451-550) 0.1992 0.2276 0.2200 0.2021 0.2188 0.2275
P30 BM25 +RM3 +Ax QL +RM3 +Ax
Wt10g (Topics 451-550) 0.2214 0.2398 0.2483 0.2180 0.2310 0.2514