Looking at Vector Space and Language Models for IR Using Density Matrices.
Alessandro SordoniJian-Yun NiePublished in: QI (2013)
Keyphrases
- vector space
- language model
- retrieval model
- ir models
- language modeling
- information retrieval
- covariance matrices
- query expansion
- ad hoc information retrieval
- vector space model
- retrieval effectiveness
- statistical language models
- term dependencies
- language model for information retrieval
- text retrieval
- document ranking
- document retrieval
- probabilistic model
- latent semantic indexing
- language modeling framework
- n gram
- test collection
- similarity search
- query terms
- language modelling
- feature vectors
- tf idf
- term frequency
- distance measure
- low dimensional
- language models for information retrieval
- singular value decomposition
- context sensitive
- document representation
- passage retrieval
- pseudo relevance feedback
- term weighting
- smoothing methods
- machine learning
- image classification
- feature selection
- relevance feedback
- information retrieval systems