Good afternoon everyone My name is Weerapat Jaengsuk today i will present about abstract of paper let's get started เริ่ม Internet-based chat environments such as Internet Relay Chat and instant messaging pose a challenge for data mining and information retrieval systems due to the multithreaded, overlapping nature of the dialog and the nonstandard usage of language. In this paper we present preliminary methods of topic detection and topic thread extraction that augment a typical TF-IDF-based vector space model approach with temporal relationship information between posts of the chat dialog combined with WordNet hypernym augmentation. We show results that promise better performance than using only a TF-IDF bag-of-words vector space model.