Toward improvement of SDR accuracy using LDA and query expansion for SpokenDoc.
Kiichi HasegawaHideki SekiyaMasanori TakeharaTaro NiinomiSatoshi TamuraSatoru HayamizuPublished in: NTCIR (2011)
Keyphrases
- query expansion
- information retrieval systems
- retrieval effectiveness
- pseudo relevance feedback
- information retrieval
- language model
- language modeling
- relevant documents
- relevance feedback
- face recognition
- retrieval model
- ad hoc retrieval
- text retrieval
- topic models
- generative model
- improving search
- biomedical information retrieval
- latent dirichlet allocation
- topic modeling
- automatic query expansion
- vocabulary mismatch
- original query
- feature extraction
- initial query
- web search engines
- dimensionality reduction
- co occurrence
- trec genomics track
- probabilistic retrieval model