Time Series Analysis of Technology Trends based on the Internet Resources

Shin Ichi Kobayashi, Yasuyuki Shirai, Kazuo Hiyane, Fumihiro Kumeno, Hiroshi Inujima

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Information technology is increasingly important in recent years for the development of our society. IT has brought many changes to everything in our society with incredible speed. Hence, when we investigate R&D themes or plan business strategies in IT, we must understand overall situation around the target technology area besides technology itself. Especially it is crucial to understand overall situation as time series to know what will happen in the near future in the target area. For this purpose, we developed a method to generate Multiple-phased trend maps automatically based on the Internet content. Furthermore, we introduced quantitative indicators to analyze near future possible changes. According to the evaluation of this method we got successful and interesting results.

Original languageEnglish
Pages (from-to)720-729
Number of pages10
JournalIEEJ Transactions on Electronics, Information and Systems
Issue number5
Publication statusPublished - 2005


  • Concept visualization
  • Technology map
  • Term-document matrix
  • Text mining
  • Time series analysis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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