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How much information project in California University examined the volume of information that have been produced so far, and revealed that actually very large volume of information has been produced, even if sensor information is not included in the target of this research. So, if such information is included, the amount becomes much larger. Therefore, we considered that it is a big challenge in information science to make value from such massive volume of data. Recently, it is said that knowledge worker waste more than 30 percent of their work time to search something. It is necessary to make information retrieval more efficient. This paper introduces info-plosion project, which tackles this challenge. In this paper we introduce four core subprojects.