Topic Signature Language Models for Ad hoc Retrieval.
Xiaohua ZhouXiaohua HuXiaodan ZhangPublished in: IEEE Trans. Knowl. Data Eng. (2007)
Keyphrases
- ad hoc retrieval
- language model
- language modelling
- query expansion
- pseudo relevance feedback
- relevance model
- test collection
- language modeling
- okapi bm
- document retrieval
- probabilistic model
- n gram
- document level
- information retrieval
- topic models
- retrieval model
- multiword
- data fusion
- web search
- document collections
- retrieval effectiveness
- smoothing methods
- context sensitive
- vector space model
- document ranking
- entity ranking
- language models for information retrieval
- document representation
- context dependent
- image annotation
- relevant documents
- average precision
- retrieved documents
- retrieval systems
- information retrieval systems