Databases are widely used in data processes and each day their sizes are getting larger. In order to access to the data stored in growing databases and to use them, new techniques are developed to discover the knowledge automatically. Data mining techniques may be used to find the useful...

Hot spring is a special attractiveness for tourists. It is a tourism resource just found in limited areas in the world. There has been significant development in the use and exploitation of hot springs. This wave of hot spring tourism attracts many businesses to invest in hot spring hotels. More...

Singular value decomposition (SVD) is a way to decompose a matrix into some successive approximation. This decomposition can reveal internal structure of the matrix. The method is very useful for text mining. Usually co-occurrence matrix (terms-by-documents matrix) defined over a large corpus of...