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Hopefully this is the right place to ask my question. I am reading this paper about cold-start recommendations: http://dl.acm.org/citation.cfm?id=1352837

the expression "aspect model" is used a lot : in the abstract (sentence before last sentence), and at the beginning of section2.

Is anyone able to shed some light here ?

Thanks

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So ! I did so more research and found the signification of "aspect model", in the paper of the author Mr Hoffman who coined the expression in this paper : http://cs.brown.edu/~th/papers/Hofmann-SIGIR99.pdf

The definition is at the top of page 2 (section 2). Enjoy :)

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