The occurrence of academic journals and conferences are getting intensively larger to publish the up-to-date research results on each particular research topics. The number of journals and conferences tends to be increased year by year. Moreover a journal or conference information is mostly accessible on the Internet and it contains not only topics but also geographical areas with which research topics are associated. This information is considered as a valuable source to understand the research trends of countries. In this paper, the state of detailed computer science research in different research fields is presented. The main aim is to develop methods for not only research topics but also the research collaboration associated with those topics related with each document and the relationships among the countries by using text mining and clustering analysis. This trend analysis for a particular research field plays vital role to those newcomers who are seeking for future research directions and possible collaborative research opportunities.
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