Llama2Vec: Unsupervised Adaptation of Large Language Models for Dense Retrieval.
Chaofan LiZheng LiuShitao XiaoYingxia ShaoDefu LianPublished in: ACL (1) (2024)
Keyphrases
- language model
- retrieval model
- document retrieval
- test collection
- query expansion
- language modeling
- language models for information retrieval
- ad hoc information retrieval
- information retrieval
- statistical language models
- learning perl
- document length
- query terms
- n gram
- relevance model
- smoothing methods
- cross language retrieval
- language modelling
- probabilistic model
- query specific
- speech recognition
- passage retrieval
- document ranking
- retrieval effectiveness
- ir models
- document level
- okapi bm
- statistical language modeling
- pseudo feedback
- context sensitive
- vector space model
- relevance feedback
- term dependencies
- retrieval systems
- term weighting
- term frequency
- improve retrieval effectiveness
- image retrieval
- language modeling framework
- sentence retrieval
- translation model
- retrieval process
- tf idf
- cross lingual