Towards unsupervised semantic retrieval of spoken content with query expansion based on automatically discovered acoustic patterns.
Yun-Chiao LiHung-yi LeeCheng-Tao ChungChun-an ChanLin-Shan LeePublished in: ASRU (2013)
Keyphrases
- query expansion
- semantic retrieval
- information retrieval systems
- retrieval effectiveness
- language model
- pseudo relevance feedback
- relevance feedback
- information retrieval
- automatic query expansion
- original query
- biomedical information retrieval
- relevant documents
- query terms
- text retrieval
- retrieved documents
- semi supervised
- machine learning
- supervised learning
- image annotation
- multi modal
- document collections
- test collection
- knn
- training set
- object recognition
- computer vision