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A social network is a graph that represents connected users. ... This makes social networks useful for providing recommendations. Assuming that connected people have also some common interests, this paper proposes a method for recommending media items based on a personal social network of each user.

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Article Social recommendation model based on user interaction in com...

A determinant of organizational performance is the ability to leverage expert knowledge: much of that knowledge is tacit and therefore difficult to capture, codify, and make available through search engines and database technologies. And so, when looking we usually turn to people we know for quick, reliable information (and chance conversations can help too.) However, in the connected economy, personal networks are no longer sufficiently diverse to identify all the right persons, much as reliance on random connections is a thing of the past. Staff directories are no longer adequate to the task: therefore, learning organizations thrive on rich and fluid linkages and use expertise location capabilities to put people in contact with one another.

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