Anserini: Regressions for CAR17 (v2.0) + doc2query
This page documents regression experiments for the TREC 2017 Complex Answer Retrieval (CAR) section-level passage retrieval task (v2.0), with doc2query expansions, as proposed in the following paper:
- Rodrigo Nogueira, Wei Yang, Jimmy Lin, Kyunghyun Cho. Document Expansion by Query Prediction. arxiv:1904.08375
These experiments are integrated into Anserini's regression testing framework. For more complete instructions on how to run end-to-end experiments, refer to this 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.
Typical indexing command:
nohup sh target/appassembler/bin/IndexCollection -collection JsonCollection -input /path/to/car17v2.0-doc2query \
-index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw -generator DefaultLuceneDocumentGenerator -threads 30 \
-storePositions -storeDocvectors -storeRaw >& logs/log.car17v2.0-doc2query.pos+docvectors+rawdocs &
The directory /path/to/car17v2.0-doc2query should be the root directory of Complex Answer Retrieval (CAR) paragraph corpus (v2.0) that has been augmented with the doc2query expansions, i.e., collection_jsonl_expanded_topk10/ as described in this page.
For additional details, see explanation of common indexing options.
The "benchmarkY1-test" topics and qrels (v2.0) are stored in src/main/resources/topics-and-qrels/, downloaded from the CAR website:
Specifically, this is the section-level passage retrieval task with automatic ground truth.
After indexing has completed, you should be able to perform retrieval as follows:
nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw \
-topicreader Car -topics src/main/resources/topics-and-qrels/topics.car17v2.0.benchmarkY1test.txt \
-bm25 -output run.car17v2.0-doc2query.bm25.topics.car17v2.0.benchmarkY1test.txt &
nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw \
-topicreader Car -topics src/main/resources/topics-and-qrels/topics.car17v2.0.benchmarkY1test.txt \
-bm25 -rm3 -output run.car17v2.0-doc2query.bm25+rm3.topics.car17v2.0.benchmarkY1test.txt &
nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw \
-topicreader Car -topics src/main/resources/topics-and-qrels/topics.car17v2.0.benchmarkY1test.txt \
-bm25 -axiom -axiom.deterministic -rerankCutoff 20 -output run.car17v2.0-doc2query.bm25+ax.topics.car17v2.0.benchmarkY1test.txt &
nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw \
-topicreader Car -topics src/main/resources/topics-and-qrels/topics.car17v2.0.benchmarkY1test.txt \
-qld -output run.car17v2.0-doc2query.ql.topics.car17v2.0.benchmarkY1test.txt &
nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw \
-topicreader Car -topics src/main/resources/topics-and-qrels/topics.car17v2.0.benchmarkY1test.txt \
-qld -rm3 -output run.car17v2.0-doc2query.ql+rm3.topics.car17v2.0.benchmarkY1test.txt &
nohup target/appassembler/bin/SearchCollection -index indexes/lucene-index.car17v2.0-doc2query.pos+docvectors+raw \
-topicreader Car -topics src/main/resources/topics-and-qrels/topics.car17v2.0.benchmarkY1test.txt \
-qld -axiom -axiom.deterministic -rerankCutoff 20 -output run.car17v2.0-doc2query.ql+ax.topics.car17v2.0.benchmarkY1test.txt &
Evaluation can be performed using trec_eval:
eval/trec_eval.9.0.4/trec_eval -c -m map -c -m recip_rank src/main/resources/topics-and-qrels/qrels.car17v2.0.benchmarkY1test.txt run.car17v2.0-doc2query.bm25.topics.car17v2.0.benchmarkY1test.txt
eval/trec_eval.9.0.4/trec_eval -c -m map -c -m recip_rank src/main/resources/topics-and-qrels/qrels.car17v2.0.benchmarkY1test.txt run.car17v2.0-doc2query.bm25+rm3.topics.car17v2.0.benchmarkY1test.txt
eval/trec_eval.9.0.4/trec_eval -c -m map -c -m recip_rank src/main/resources/topics-and-qrels/qrels.car17v2.0.benchmarkY1test.txt run.car17v2.0-doc2query.bm25+ax.topics.car17v2.0.benchmarkY1test.txt
eval/trec_eval.9.0.4/trec_eval -c -m map -c -m recip_rank src/main/resources/topics-and-qrels/qrels.car17v2.0.benchmarkY1test.txt run.car17v2.0-doc2query.ql.topics.car17v2.0.benchmarkY1test.txt
eval/trec_eval.9.0.4/trec_eval -c -m map -c -m recip_rank src/main/resources/topics-and-qrels/qrels.car17v2.0.benchmarkY1test.txt run.car17v2.0-doc2query.ql+rm3.topics.car17v2.0.benchmarkY1test.txt
eval/trec_eval.9.0.4/trec_eval -c -m map -c -m recip_rank src/main/resources/topics-and-qrels/qrels.car17v2.0.benchmarkY1test.txt run.car17v2.0-doc2query.ql+ax.topics.car17v2.0.benchmarkY1test.txt
With the above commands, you should be able to replicate the following results:
| MAP | BM25 | +RM3 | +Ax | QL | +RM3 | +Ax |
|---|---|---|---|---|---|---|
| TREC 2017 CAR: benchmarkY1test (v2.0) | 0.1807 | 0.1521 | 0.1470 | 0.1752 | 0.1453 | 0.1339 |
| RECIP_RANK | BM25 | +RM3 | +Ax | QL | +RM3 | +Ax |
|---|---|---|---|---|---|---|
| TREC 2017 CAR: benchmarkY1test (v2.0) | 0.2750 | 0.2275 | 0.2186 | 0.2653 | 0.2156 | 0.1981 |