webis-touche2020.pisa

Description

A PISA index for the Touche2020 dataset (version 2)

Usage

# Load the artifact
import pyterrier as pt
index = pt.Artifact.from_hf('pyterrier/webis-touche2020.pisa')
index.bm25() # returns a BM25 retriever

Benchmarks

name	nDCG@10	R@1000
bm25	0.6563	0.7163
dph	0.6785	0.7292

Reproduction

import pyterrier as pt
from tqdm import tqdm
import ir_datasets
from pyterrier_pisa import PisaIndex
index = PisaIndex("webis-touche2020/v2.pisa", threads=16)
dataset = ir_datasets.load('beir/webis-touche2020/v2')
docs = ({'docno': d.doc_id, 'text': '{title}\n{text}'.format(**d._asdict())} for d in tqdm(dataset.docs))
index.index(docs)

Metadata

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