Looking at Vector Space and Language Models for IR using Density Matrices.
Alessandro SordoniJian-Yun NiePublished in: CoRR (2014)
Keyphrases
- vector space
- language model
- retrieval model
- ir models
- language modeling
- information retrieval
- covariance matrices
- query expansion
- ad hoc information retrieval
- retrieval effectiveness
- vector space model
- statistical language models
- language model for information retrieval
- n gram
- text retrieval
- document retrieval
- term dependencies
- test collection
- passage retrieval
- term weighting
- latent semantic indexing
- distance measure
- language modeling framework
- mixture model
- document ranking
- document representation
- information retrieval systems
- feature vectors
- probabilistic model
- cross lingual
- tf idf
- context sensitive
- relevance model
- language modelling
- similarity search
- query terms
- singular value decomposition
- low dimensional
- pseudo relevance feedback
- xml retrieval
- language models for information retrieval
- term frequency
- relevance assessments
- training set
- text mining
- clustering algorithm
- user queries
- data sets