Detecting Topic Labels for Tweets by Matching Features from Pseudo-Relevance Feedback.
Jing ZhangDerek LiuKok-Leong OngZhijie LiMing LiPublished in: AusDM (2012)
Keyphrases
- pseudo relevance feedback
- short texts
- retrieval effectiveness
- query expansion
- co occurrence
- feature space
- document retrieval
- feature extraction
- feature vectors
- information retrieval
- language model
- average precision
- news articles
- topic models
- relevance feedback
- training data
- image content
- image features
- knn
- short text
- feature selection