Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: User modeling for point-of-interest recommendations in location-based
  social networks: the state-of-the-art   The rapid growth of location-based services(LBSs)has greatly enriched
people's urban lives and attracted millions of users in recent years.
Location-based social networks(LBSNs)allow users to check-in at a physical
location and share daily tips on points-of-interest (POIs) with their friends
anytime and anywhere. Such check-in behavior can make daily real-life
experiences spread quickly through the Internet. Moreover, such check-in data
in LBSNs can be fully exploited to understand the basic laws of human daily
movement and mobility. This paper focuses on reviewing the taxonomy of user
modeling for POI recommendations through the data analysis of LBSNs. First, we
briefly introduce the structure and data characteristics of LBSNs,then we
present a formalization of user modeling for POI recommendations in LBSNs.
Depending on which type of LBSNs data was fully utilized in user modeling
approaches for POI recommendations, we divide user modeling algorithms into
four categories: pure check-in data-based user modeling, geographical
information-based user modeling, spatio-temporal information-based user
modeling, and geo-social information-based user modeling. Finally,summarizing
the existing works, we point out the future challenges and new directions in
five possible aspects

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The categories of this paper are: acc-phys
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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin