Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improving Query Safety at Pinterest   Query recommendations in search engines is a double edged sword, with
undeniable benefits but potential of harm. Identifying unsafe queries is
necessary to protect users from inappropriate query suggestions. However,
identifying these is non-trivial because of the linguistic diversity resulting
from large vocabularies, social-group-specific slang and typos, and because the
inappropriateness of a term depends on the context. Here we formulate the
problem as query-set expansion, where we are given a small and potentially
biased seed set and the aim is to identify a diverse set of semantically
related queries. We present PinSets, a system for query-set expansion, which
applies a simple yet powerful mechanism to search user sessions, expanding a
tiny seed set into thousands of related queries at nearly perfect precision,
deep into the tail, along with explanations that are easy to interpret. PinSets
owes its high quality expansion to using a hybrid of textual and behavioral
techniques (i.e., treating queries both as compositional and as black boxes).
Experiments show that, for the domain of drugs-related queries, PinSets expands
20 seed queries into 15,670 positive training examples at over 99\% precision.
The generated expansions have diverse vocabulary and correctly handles words
with ambiguous safety. PinSets decreased unsafe query suggestions at Pinterest
by 90\%.

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The categories of this paper are: astro-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: physics
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The categories of this paper are: plasm-ph
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The categories of this paper are: funct-an
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
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The categories of this paper are: math
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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: ao-sci
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The categories of this paper are: gr-qc
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The categories of this paper are: supr-con
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The categories of this paper are: atom-ph