Topic Detection in Online Discussion Using Non-negative Matrix Factorization.
Zhi-Li WuChun-hung LiPublished in: Web Intelligence/IAT Workshops (2007)
Keyphrases
- topic detection
- online discussion
- content analysis
- text classification
- document clustering
- document collections
- computer mediated
- knowledge building
- online forums
- text data
- information retrieval
- blended learning
- knowledge transfer
- document level
- search engine
- learning processes
- machine learning algorithms
- collaborative learning
- video sequences
- computer supported collaborative learning
- case study
- data sets