Improvements to BM25 and Language Models Examined.

Andrew Trotman Antti Puurula Blake Burgess

Published in: ADCS (2014)

Keyphrases

language model
retrieval model
document retrieval
okapi bm
language modeling
information retrieval
ir models
document length
test collection
probabilistic model

term weighting
n gram
speech recognition
term frequency
retrieval effectiveness
text retrieval
query expansion
smoothing methods
vector space model
ad hoc information retrieval

divergence from randomness
mixture model
context sensitive
statistical language models
language modelling
query terms
tf idf
ranking functions
document ranking
translation model

document representation
relevance model
latent semantic indexing
pseudo relevance feedback
language models for information retrieval
term dependencies
query specific
passage retrieval
dirichlet prior