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Anserini Regressions: MS MARCO Passage Ranking

Model: cosDPR-distil with inverted indexes using the "LexLSH" technique (b=600); pre-encoded queries

This page describes regression experiments, integrated into Anserini's regression testing framework, using the cosDPR-distil model on the MS MARCO passage ranking task. In these experiments, we are using pre-encoded queries (i.e., cached results of query encoding).

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 and then run bin/build.sh to rebuild the documentation.

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 msmarco-passage-cos-dpr-distil-lexlsh

We make available a version of the MS MARCO Passage Corpus that has already been encoded with cosDPR-distil.

From any machine, the following command will download the corpus and perform the complete regression, end to end:

python src/main/python/run_regression.py --download --index --verify --search --regression msmarco-passage-cos-dpr-distil-lexlsh

The run_regression.py script automates the following steps, but if you want to perform each step manually, simply copy/paste from the commands below and you'll obtain the same regression results.

Corpus Download

Download the corpus and unpack into collections/:

wget https://rgw.cs.uwaterloo.ca/pyserini/data/msmarco-passage-cos-dpr-distil.tar -P collections/
tar xvf collections/msmarco-passage-cos-dpr-distil.tar -C collections/

To confirm, msmarco-passage-cos-dpr-distil.tar is 57 GB and has MD5 checksum e20ffbc8b5e7f760af31298aefeaebbd. With the corpus downloaded, the following command will perform the remaining steps below:

python src/main/python/run_regression.py --index --verify --search --regression msmarco-passage-cos-dpr-distil-lexlsh \
  --corpus-path collections/msmarco-passage-cos-dpr-distil

Indexing

Sample indexing command, applying inverted indexes to dense vectors using the "LexLSH" technique:

target/appassembler/bin/IndexInvertedDenseVectors \
  -collection JsonDenseVectorCollection \
  -input /path/to/msmarco-passage-cos-dpr-distil \
  -index indexes/lucene-index.msmarco-passage-cos-dpr-distil.lexlsh-600/ \
  -generator InvertedDenseVectorDocumentGenerator \
  -threads 16 -encoding lexlsh -lexlsh.b 600 \
  >& logs/log.msmarco-passage-cos-dpr-distil &

The path /path/to/msmarco-passage-cos-dpr-distil/ should point to the corpus downloaded above.

Upon completion, we should have an index with 8,841,823 documents.

Retrieval

Topics and qrels are stored here, which is linked to the Anserini repo as a submodule. The regression experiments here evaluate on the 6980 dev set questions; see this page for more details.

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

target/appassembler/bin/SearchInvertedDenseVectors \
  -index indexes/lucene-index.msmarco-passage-cos-dpr-distil.lexlsh-600/ \
  -topics tools/topics-and-qrels/topics.msmarco-passage.dev-subset.cos-dpr-distil.jsonl.gz \
  -topicreader JsonIntVector \
  -output runs/run.msmarco-passage-cos-dpr-distil.cos-dpr-distil-lexlsh-600.topics.msmarco-passage.dev-subset.cos-dpr-distil.jsonl.txt \
  -topicfield vector -encoding lexlsh -lexlsh.b 600 -hits 1000 &

Evaluation can be performed using trec_eval:

tools/eval/trec_eval.9.0.4/trec_eval -c -m map tools/topics-and-qrels/qrels.msmarco-passage.dev-subset.txt runs/run.msmarco-passage-cos-dpr-distil.cos-dpr-distil-lexlsh-600.topics.msmarco-passage.dev-subset.cos-dpr-distil.jsonl.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -M 10 -m recip_rank tools/topics-and-qrels/qrels.msmarco-passage.dev-subset.txt runs/run.msmarco-passage-cos-dpr-distil.cos-dpr-distil-lexlsh-600.topics.msmarco-passage.dev-subset.cos-dpr-distil.jsonl.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.100 tools/topics-and-qrels/qrels.msmarco-passage.dev-subset.txt runs/run.msmarco-passage-cos-dpr-distil.cos-dpr-distil-lexlsh-600.topics.msmarco-passage.dev-subset.cos-dpr-distil.jsonl.txt
tools/eval/trec_eval.9.0.4/trec_eval -c -m recall.1000 tools/topics-and-qrels/qrels.msmarco-passage.dev-subset.txt runs/run.msmarco-passage-cos-dpr-distil.cos-dpr-distil-lexlsh-600.topics.msmarco-passage.dev-subset.cos-dpr-distil.jsonl.txt

Effectiveness

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

AP@1000 cosDPR-distill
MS MARCO Passage: Dev 0.3509
RR@10 cosDPR-distill
MS MARCO Passage: Dev 0.3457
R@100 cosDPR-distill
MS MARCO Passage: Dev 0.8615
R@1000 cosDPR-distill
MS MARCO Passage: Dev 0.9596

Note that due to the non-deterministic nature of HNSW indexing, results may differ slightly between each experimental run. Nevertheless, scores are generally within 0.005 of the reference values recorded in our YAML configuration file.

Reproduction Log*

To add to this reproduction log, modify this template and run bin/build.sh to rebuild the documentation.