Recently, SNS (Social Network Service), blog and microblog have become very popular. Stream data, a large collection of diverse contents that are created dynamically in the form of streams, have become an important part of the Internet resources. At the same time, it has become easier to collect people’s activities as their lifelogs, not only in the cyber space, but also in the physical world by means of ubiquitous and sensing technology. Either stream data or lifelogs represent different aspects of people’s information behaviors and social activities, which we call Social Streams. In this study, we try to integrate and organize these social stream data, such as Twitter Tweets, into Ubiquitous Personal Study (UPS) proposed in our previous study. In this paper, we introduce and define a set of new metaphors: Drop, Stream, River and Ocean, to represent a variety of social stream data in different stages, in order to enable UPS socialized toward an individualized information portal. We further propose a Framework of Organic Streams to meaningfully organize these stream data. We discuss the design and implementation issues of a prototype system, and describe the algorithms to realize our proposed metaphors. Moreover, we show a scenario of using the socialized UPS to support learning activities, with experimental data and analysis results.


  • We aim to enable our previously proposed UPS socialized toward an individualized information portal with newly introduced metaphors and framework and newly developed algorithms and mechanisms.
  • We introduce and define a set of original metaphors, such as Drop, Stream, River, and Ocean, to represent social streams.
  • We propose a new framework of Organic Streams based on these metaphors to meaningfully organize a variety of stream data, which can be stored in UPS for future use.
  • We further develop two algorithms to make the framework to effectively work for the socialized UPS.

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