Surface-Based Retrieval Reduces Perplexity of Retrieval-Augmented Language Models.
Ehsan DoostmohammadiTobias NorlundMarco KuhlmannRichard JohanssonPublished in: ACL (2) (2023)
Keyphrases
- language model
- retrieval model
- document retrieval
- test collection
- query expansion
- language modeling
- language models for information retrieval
- ad hoc information retrieval
- information retrieval
- n gram
- query terms
- smoothing methods
- statistical language models
- speech recognition
- cross language retrieval
- document length
- probabilistic model
- query specific
- image retrieval
- language modelling
- document ranking
- ir models
- information retrieval systems
- pseudo feedback
- relevance model
- passage retrieval
- retrieval effectiveness
- retrieval systems
- okapi bm
- document level
- term dependencies
- tf idf
- word error rate
- text retrieval
- statistical language modeling
- image database
- out of vocabulary
- pseudo relevance feedback
- document collections
- language modeling approaches