Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geocoding Without Geotags: A Text-based Approach for reddit   In this paper, we introduce the first geolocation inference approach for
reddit, a social media platform where user pseudonymity has thus far made
supervised demographic inference difficult to implement and validate. In
particular, we design a text-based heuristic schema to generate ground truth
location labels for reddit users in the absence of explicitly geotagged data.
After evaluating the accuracy of our labeling procedure, we train and test
several geolocation inference models across our reddit data set and three
benchmark Twitter geolocation data sets. Ultimately, we show that geolocation
models trained and applied on the same domain substantially outperform models
attempting to transfer training data across domains, even more so on reddit
where platform-specific interest-group metadata can be used to improve
inferences.

6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph