This paper adopted analysis content method based on word frequency and used the EXCEL as tools to deal with the 50174 keywords from the five information journals and three all-round library and information journals collected by the China Social Science Index(CSSCI) from 1998 to 2004.

This paper adopted analysis content method based on word frequency and key words,used the EXCEL as tools to statistic the core information science journals collected by CNKI.

The Experimental Study on the Corpus Based Word Frequency Statistics of Modern Uighur Language;

The methods based on word frequency statistics were used in Chinese text classification.

Research on an improved Chinese segmentation algorithm based on word frequency statistic;

The word frequency statistic is the foundation of information treatment.

By the method of word occurrence frequency statistics, this paper analyzes the titles of over 1600 papers published in the 3 key journals, namely, Studies in Dialectics of Nature, Journal of Dialectics of Nature, and Science Technology and Dialectics, which to some degree shows the status quo and the latest trend in the development of studies on dialectics of nature.

By the method of word occurrence frequency statistics,this paper analyzes the titles of 694 papers published in Chinese Translator Journal from 2001 to 2006,which,to some degree,shows the status quo and the latest trend in the development of translation studies in China.

The paper introduces the design and implementation of Chinese word segmentation system,which is based on statistic the frequency of the word.

Based on the definition of plagiarism and the law,put forwards the existent problems and strategies for improvement by analyzing the main methods to deal with plagiarism judgment both at home and abroad,and produce a way to judge plagiarism according to word-frequency statistics of paragraphs.