News topic detection based on hierarchical clustering and named entity.
Sheng HuangXueping PengZhendong NiuPublished in: NLPKE (2011)
Keyphrases
- topic detection
- hierarchical clustering
- named entities
- hot topics
- text mining
- document clustering
- text data
- named entity recognition
- clustering method
- information extraction
- text classification
- text documents
- co occurrence
- natural language processing
- relation extraction
- clustering algorithm
- question answering
- document collections
- noun phrases
- k means
- information retrieval
- unsupervised learning
- document retrieval
- news articles
- document level
- data sets
- em algorithm
- data analysis