Titlebook: Information Retrieval Technology; 4th Asia Information Hang Li,Ting Liu,Guodong Zhou Conference proceedings 2008 Springer-Verlag Berlin Hei

originality

0302-9743 n Harbin, China, in May 2008. The 39 revised full papers and 43 revised poster papers presented were carefully reviewed and selected from 144 submissions. All current issues in information retrieval are addressed: applications, systems, technologies and theoretical aspects of information retrieval i

otic-capsule

Conference proceedings 2008China, in May 2008. The 39 revised full papers and 43 revised poster papers presented were carefully reviewed and selected from 144 submissions. All current issues in information retrieval are addressed: applications, systems, technologies and theoretical aspects of information retrieval in text, au

贫困

大酒杯

somnambulism

Smoothing LDA Model for Text Categorizationr smoothing, are employed to LDA model. Evaluations on different text categorization collections show data-driven smoothing can significantly improve the performance in balanced and unbalanced corpora.

专心

disciplined

信条

Pathogen

骄傲

Exploring the Stability of IDF Term Weightingd approximation to the IDF computed over the entire collection, but with less computation overhead. This practice may be particularly informative and helpful for analysis on large database or dynamic environment like the Web.