aditya-srikanth/SparseRetrieval

Sparse Retrieval using Contextualized Term Weights

SparseRetrieval

This repo contains information on different experiments conducted in the area of Sparse Information Retrieval using contextualised term weights. We have used the Anserini IR toolkit to perform the experiments.

Sparse Retrieval Systems

• DeepCT
  • GitHub
• DeepImpact
• COIL
  • GitHub
• uniCOIL
  • GitHub

Results

Term Weighting	Expansion	MRR@10	Notes
BM25	None	0.1874
DeepCT	None	0.2362	No hyperparameter tuning
DeepCT	None	0.2425	Hyper-params fine-tuned: k1=18, b=0.7
DeepImpact	doc2query–T5	0.3253
COIL	None	0.3536	token dimension d = 32
uniCOIL	doc2query–T5	0.3515