Improvement Recall of NTCIR-MedNLP Using Hierarchical Bayesian Language Models.
Ryo FujiiMasashi TadaPublished in: NTCIR (2013)
Keyphrases
- language model
- hierarchical bayesian
- test collection
- language modeling
- probabilistic model
- bayesian inference
- variational inference
- retrieval model
- document retrieval
- retrieval effectiveness
- n gram
- relevant documents
- information retrieval
- average precision
- mixture model
- query expansion
- precision and recall
- smoothing methods
- search tasks
- evaluation metrics
- patent retrieval
- translation model
- pseudo relevance feedback
- query terms
- retrieval systems
- language models for information retrieval
- variational methods
- relevance model
- gibbs sampling
- cross language information retrieval
- unsupervised learning
- text classification