Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: REST: A Thread Embedding Approach for Identifying and Classifying
  User-specified Information in Security Forums   How can we extract useful information from a security forum? We focus on
identifying threads of interest to a security professional: (a) alerts of
worrisome events, such as attacks, (b) offering of malicious services and
products, (c) hacking information to perform malicious acts, and (d) useful
security-related experiences. The analysis of security forums is in its infancy
despite several promising recent works. Novel approaches are needed to address
the challenges in this domain: (a) the difficulty in specifying the "topics" of
interest efficiently, and (b) the unstructured and informal nature of the text.
We propose, REST, a systematic methodology to: (a) identify threads of interest
based on a, possibly incomplete, bag of words, and (b) classify them into one
of the four classes above. The key novelty of the work is a multi-step weighted
embedding approach: we project words, threads and classes in appropriate
embedding spaces and establish relevance and similarity there. We evaluate our
method with real data from three security forums with a total of 164k posts and
21K threads. First, REST robustness to initial keyword selection can extend the
user-provided keyword set and thus, it can recover from missing keywords.
Second, REST categorizes the threads into the classes of interest with superior
accuracy compared to five other methods: REST exhibits an accuracy between
63.3-76.9%. We see our approach as a first step for harnessing the wealth of
information of online forums in a user-friendly way, since the user can loosely
specify her keywords of interest.

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The categories of this paper are: hep-ph
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
18
The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th