Anserini: Experiments on ClueWeb12
Typical indexing command:
nohup sh target/appassembler/bin/IndexCollection -collection ClueWeb12Collection \
-generator JsoupGenerator -threads 44 -input /path/to/cw12 -index \
lucene-index.cw12.pos+docvectors+rawdocs -storePositions -storeDocvectors \
-storeRawDocs >& log.cw12.pos+docvectors+rawdocs &
The directory /path/to/cw12/ should be the root directory of ClueWeb12 collection, i.e., /path/to/cw12/ should contain
Disk1, Disk2, Disk3, Disk4.
For additional details, see explanation of common indexing options.
Topics and qrels are stored in src/main/resources/topics-and-qrels/, downloaded from NIST:
topics.web.201-250.txt: Topics 201-250 (TREC 2013 Web Track)topics.web.251-300.txt: Topics 251-300 (TREC 2014 Web Track)qrels.web.201-250.txt: one aspect per topic qrels for Topics 201-250 (TREC 2013 Web Track)qrels.web.251-300.txt: one aspect per topic qrels for Topics 251-300 (TREC 2014 Web Track)
After indexing has completed, you should be able to perform retrieval as follows:
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.201-250.txt -output run.cw12.bm25.topics.web.201-250.txt -bm25 &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.251-300.txt -output run.cw12.bm25.topics.web.251-300.txt -bm25 &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.201-250.txt -output run.cw12.bm25+rm3.topics.web.201-250.txt -bm25 -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.251-300.txt -output run.cw12.bm25+rm3.topics.web.251-300.txt -bm25 -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.201-250.txt -output run.cw12.ql.topics.web.201-250.txt -ql &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.251-300.txt -output run.cw12.ql.topics.web.251-300.txt -ql &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.201-250.txt -output run.cw12.ql+rm3.topics.web.201-250.txt -ql -rm3 &
nohup target/appassembler/bin/SearchCollection -topicreader Webxml -index lucene-index.cw12.pos+docvectors+rawdocs -topics src/main/resources/topics-and-qrels/topics.web.251-300.txt -output run.cw12.ql+rm3.topics.web.251-300.txt -ql -rm3 &
Evaluation can be performed using trec_eval and gdeval.pl:
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.bm25.topics.web.201-250.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.bm25.topics.web.201-250.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.bm25.topics.web.251-300.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.bm25.topics.web.251-300.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.bm25+rm3.topics.web.201-250.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.bm25+rm3.topics.web.201-250.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.bm25+rm3.topics.web.251-300.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.bm25+rm3.topics.web.251-300.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.ql.topics.web.201-250.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.ql.topics.web.201-250.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.ql.topics.web.251-300.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.ql.topics.web.251-300.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.ql+rm3.topics.web.201-250.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.201-250.txt run.cw12.ql+rm3.topics.web.201-250.txt
eval/gdeval.pl src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.ql+rm3.topics.web.251-300.txt
eval/trec_eval.9.0.4/trec_eval -m map -m P.30 src/main/resources/topics-and-qrels/qrels.web.251-300.txt run.cw12.ql+rm3.topics.web.251-300.txt
With the above commands, you should be able to replicate the following results:
| MAP | BM25 | BM25+RM3 | QL | QL+RM3 |
|---|---|---|---|---|
| TREC 2013 Web Track: Topics 201-250 | 0.1695 | 0.1464 | 0.1493 | 0.1291 |
| TREC 2014 Web Track: Topics 251-300 | 0.2469 | 0.2325 | 0.2467 | 0.2168 |
| P30 | BM25 | BM25+RM3 | QL | QL+RM3 |
|---|---|---|---|---|
| TREC 2013 Web Track: Topics 201-250 | 0.2767 | 0.2387 | 0.2613 | 0.2347 |
| TREC 2014 Web Track: Topics 251-300 | 0.4533 | 0.4073 | 0.4380 | 0.3793 |
| NDCG20 | BM25 | BM25+RM3 | QL | QL+RM3 |
|---|---|---|---|---|
| TREC 2013 Web Track: Topics 201-250 | 0.2086 | 0.2033 | 0.1993 | 0.1725 |
| TREC 2014 Web Track: Topics 251-300 | 0.2578 | 0.2530 | 0.2228 | 0.2066 |
| ERR20 | BM25 | BM25+RM3 | QL | QL+RM3 |
|---|---|---|---|---|
| TREC 2013 Web Track: Topics 201-250 | 0.1284 | 0.1264 | 0.1232 | 0.1008 |
| TREC 2014 Web Track: Topics 251-300 | 0.1630 | 0.1655 | 0.1321 | 0.1218 |