1. Ohsumi, N.: Mining of textual data. Recent trend and its direction,
http://wordminer.comquest.co.jp/wmtips/pdf/20060910_1.pdf
2. Sato, S., Fukuda, K., Sugawara, S., Kurihara, S.: On the relationship between word bursts in document streams and clusters in lexical co-occurrence networks. IPSJ 48-SIG14, 69–81 (2007)
3. Sullivan, D.: Document Warehousing and Text Mining. John Wiley, Chichester (2001)
4. Toda, H., Kataoka, R., Kitagawa, H.: Clustering news articles using named entities. IPSJ SIG Technical Report, 2005-DBS-137, pp.175–181 (2005)
5. Takahashi, S., Takahashi, S., Yasuda, N., Takahata, N., Ishikawa, T.: A Meaningful Keywords Extracting system based on A Sentence-Semantic Analysis Method. In: IPSJ, AI TR, vol. 90-8, pp. 65–72 (1992)