Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Describing and Understanding Neighborhood Characteristics through Online
  Social Media   Geotagged data can be used to describe regions in the world and discover
local themes. However, not all data produced within a region is necessarily
specifically descriptive of that area. To surface the content that is
characteristic for a region, we present the geographical hierarchy model (GHM),
a probabilistic model based on the assumption that data observed in a region is
a random mixture of content that pertains to different levels of a hierarchy.
We apply the GHM to a dataset of 8 million Flickr photos in order to
discriminate between content (i.e., tags) that specifically characterizes a
region (e.g., neighborhood) and content that characterizes surrounding areas or
more general themes. Knowledge of the discriminative and non-discriminative
terms used throughout the hierarchy enables us to quantify the uniqueness of a
given region and to compare similar but distant regions. Our evaluation
demonstrates that our model improves upon traditional Naive Bayes
classification by 47% and hierarchical TF-IDF by 27%. We further highlight the
differences and commonalities with human reasoning about what is locally
characteristic for a neighborhood, distilled from ten interviews and a survey
that covered themes such as time, events, and prior regional knowledge

31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-th
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The categories of this paper are: patt-sol
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex