Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SANST: A Self-Attentive Network for Next Point-of-Interest
  Recommendation   Next point-of-interest (POI) recommendation aims to offer suggestions on
which POI to visit next, given a user's POI visit history. This problem has a
wide application in the tourism industry, and it is gaining an increasing
interest as more POI check-in data become available. The problem is often
modeled as a sequential recommendation problem to take advantage of the
sequential patterns of user check-ins, e.g., people tend to visit Central Park
after The Metropolitan Museum of Art in New York City. Recently, self-attentive
networks have been shown to be both effective and efficient in general
sequential recommendation problems, e.g., to recommend products, video games,
or movies. Directly adopting self-attentive networks for next POI
recommendation, however, may produce sub-optimal recommendations. This is
because vanilla self-attentive networks do not consider the spatial and
temporal patterns of user check-ins, which are two critical features in next
POI recommendation. To address this limitation, in this paper, we propose a
model named SANST that incorporates spatio-temporal patterns of user check-ins
into self-attentive networks. To incorporate the spatial patterns, we encode
the relative positions of POIs into their embeddings before feeding the
embeddings into the self-attentive network. To incorporate the temporal
patterns, we discretize the time of POI check-ins and model the temporal
relationship between POI check-ins by a relation-aware self-attention module.
We evaluate the performance of our SANST model with three real-world datasets.
The results show that SANST consistently outperforms the state-of-theart
models, and the advantage in nDCG@10 is up to 13.65%.

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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys
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The categories of this paper are: gr-qc
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The categories of this paper are: q-alg