1-Clustering and classification
2-Automatic dicovery of similar words
3-Simultaneous clustering and dynamic keyword weighting for text documents
4-Feature selection and document clustering
5-Vector space models for search and cluster mining
6-Hotminer:Discovering hot topics from dirty text
7-Combining families of information retrieval algorithms using Metalearning
8-Trend and behaviour detection from Web Queries
9-A Survey of Emerging trend detection in textual data mining