Abstract
The research fields of informatics or computer-related sciences are very wide. It is said that Japan is far behind the United States in these fields, but there are not many persuasive data for it. In this paper, we give some statistical comparisons between Japan and the United States about the number of researchers, the number of papers per fields, 'and so on. They are done using "Directory of Researchers" Database by National Institute of Informatics, and so on.
Further, in order to investigate the content of information sciences and the validity of the classification of "Directory of Researchers" Database, we compare the declared research fields and the fields of their research themes with the classification by "Handbook for Information Processing" by Information Processing Society of Japan. Also, we analyzed the relation of three research fields declared by each researcher.
