Capreolus is a toolkit for conducting end-to-end ad hoc retrieval experiments. Capreolus provides fine control over the entire experimental pipeline through the use of interchangeable and configurable modules.

Get started with a Notebook

Read the documentation for a detailed overview.

1. Prerequisites: Python 3.7+ and Java 11. See the installation instructions
2. Install the pip package: pip install capreolus
3. Train a model: capreolus rerank.traineval with benchmark.name=nf reranker.name=KNRM reranker.trainer.niters=2
4. If the train command completed successfully, you've trained your first Capreolus reranker on NFCorpus! This command created several outputs, such as model checkpoints and TREC-format run files. To learn about these files, read about running experiments with Capreolus.
5. To learn about different configuration options, try: capreolus rerank.print_config with benchmark.name=nf reranker.name=KNRM
6. To learn about different modules you can use, such as reranker.name=DRMM, try: capreolus modules
7. Learn about running experiments via the Python API

Capreolus uses environment variables to indicate where outputs should be stored and where document inputs can be found. Consult the table below to determine which variables should be set. Set them either on the fly before running Capreolus (export CAPREOLUS_RESULTS=...) or by editing your shell's initialization files (e.g., ~/.bashrc or ~/.zshrc).