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Anserini Regressions: TREC 2021 Deep Learning Track (Passage)

Models: various bag-of-words approaches on original passages

This page describes baseline experiments, integrated into Anserini's regression testing framework, on the TREC 2021 Deep Learning Track passage ranking task using the MS MARCO V2 Passage Corpus.

Note that the NIST relevance judgments provide far more relevant passages per topic, unlike the "sparse" judgments provided by Microsoft (these are sometimes called "dense" judgments to emphasize this contrast). For additional instructions on working with the MS MARCO V2 Passage Corpus, 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.

From one of our Waterloo servers (e.g., orca), the following command will perform the complete regression, end to end:

python src/main/python/run_regression.py --index --verify --search --regression dl21-passage

Indexing

Typical indexing command:

target/appassembler/bin/IndexCollection \
  -collection MsMarcoV2PassageCollection \
  -input /path/to/msmarco-v2-passage \
  -index indexes/lucene-index.msmarco-v2-passage/ \
  -generator DefaultLuceneDocumentGenerator \
  -threads 24 -storeRaw \
  >& logs/log.msmarco-v2-passage &

The value of -input should be a directory containing the compressed jsonl files that comprise the corpus. See this page for additional details.

For additional details, see explanation of common indexing options.

Retrieval

Topics and qrels are stored here, which is linked to the Anserini repo as a submodule. The regression experiments here evaluate on the 53 topics for which NIST has provided judgments as part of the TREC 2021 Deep Learning Track. The original data can be found here.

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

target/appassembler/bin/SearchCollection \
  -index indexes/lucene-index.msmarco-v2-passage/ \
  -topics tools/topics-and-qrels/topics.dl21.txt \
  -topicreader TsvInt \
  -output runs/run.msmarco-v2-passage.bm25-default.topics.dl21.txt \
  -bm25 &

target/appassembler/bin/SearchCollection \
  -index indexes/lucene-index.msmarco-v2-passage/ \
  -topics tools/topics-and-qrels/topics.dl21.txt \
  -topicreader TsvInt \
  -output runs/run.msmarco-v2-passage.bm25-default+rm3.topics.dl21.txt \
  -bm25 -rm3 -collection MsMarcoV2PassageCollection &

target/appassembler/bin/SearchCollection \
  -index indexes/lucene-index.msmarco-v2-passage/ \
  -topics tools/topics-and-qrels/topics.dl21.txt \
  -topicreader TsvInt \
  -output runs/run.msmarco-v2-passage.bm25-default+rocchio.topics.dl21.txt \
  -bm25 -rocchio -collection MsMarcoV2PassageCollection &

Evaluation can be performed using trec_eval:

tools/eval/trec_eval.9.0.4/trec_eval -c -M 100 -m map -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -M 100 -m recip_rank -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m ndcg_cut.10 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.100 -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.1000 -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default.topics.dl21.txt

tools/eval/trec_eval.9.0.4/trec_eval -c -M 100 -m map -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rm3.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -M 100 -m recip_rank -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rm3.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m ndcg_cut.10 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rm3.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.100 -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rm3.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.1000 -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rm3.topics.dl21.txt

tools/eval/trec_eval.9.0.4/trec_eval -c -M 100 -m map -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rocchio.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -M 100 -m recip_rank -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rocchio.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m ndcg_cut.10 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rocchio.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.100 -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rocchio.topics.dl21.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.1000 -l 2 tools/topics-and-qrels/qrels.dl21-passage.txt runs/run.msmarco-v2-passage.bm25-default+rocchio.topics.dl21.txt

Effectiveness

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

MAP@100 BM25 (default) +RM3 +Rocchio
DL21 (Passage) 0.1357 0.1666 0.1704
MRR@100 BM25 (default) +RM3 +Rocchio
DL21 (Passage) 0.5060 0.5202 0.5440
nDCG@10 BM25 (default) +RM3 +Rocchio
DL21 (Passage) 0.4458 0.4455 0.4544
R@100 BM25 (default) +RM3 +Rocchio
DL21 (Passage) 0.3261 0.3499 0.3600
R@1000 BM25 (default) +RM3 +Rocchio
DL21 (Passage) 0.6149 0.6616 0.6709

Some of these regressions correspond to official TREC 2021 Deep Learning Track "baseline" submissions:

  • p_bm25 = BM25 (default), k1=0.9, b=0.4
  • p_bm25rm3 = BM25 (default) + RM3, k1=0.9, b=0.4