fever.pisa

Description

A PISA index for the Fever dataset

Usage

# Load the artifact
import pyterrier as pt
index = pt.Artifact.from_hf('pyterrier/fever.pisa')
index.bm25() # return a BM25 retriever

Benchmarks

fever/dev

name	nDCG@10	R@1000
bm25	0.6425	0.96
dph	0.6831	0.9604

fever/test

name	nDCG@10	R@1000
bm25	0.6305	0.9532
dph	0.6716	0.9573

Reproduction

import pyterrier as pt
from tqdm import tqdm
import ir_datasets
from pyterrier_pisa import PisaIndex
index = PisaIndex("fever.pisa", threads=16)
dataset = ir_datasets.load('beir/fever')
docs = ({'docno': d.doc_id, 'text': d.default_text()} for d in tqdm(dataset.docs))
index.index(docs)

Metadata

{
  "type": "sparse_index",
  "format": "pisa",
  "package_hint": "pyterrier-pisa",
  "stemmer": "porter2"
}