Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: When is it Biased? Assessing the Representativeness of Twitter's
  Streaming API   Twitter has captured the interest of the scientific community not only for
its massive user base and content, but also for its openness in sharing its
data. Twitter shares a free 1% sample of its tweets through the "Streaming
API", a service that returns a sample of tweets according to a set of
parameters set by the researcher. Recently, research has pointed to evidence of
bias in the data returned through the Streaming API, raising concern in the
integrity of this data service for use in research scenarios. While these
results are important, the methodologies proposed in previous work rely on the
restrictive and expensive Firehose to find the bias in the Streaming API data.
In this work we tackle the problem of finding sample bias without the need for
"gold standard" Firehose data. Namely, we focus on finding time periods in the
Streaming API data where the trend of a hashtag is significantly different from
its trend in the true activity on Twitter. We propose a solution that focuses
on using an open data source to find bias in the Streaming API. Finally, we
assess the utility of the data source in sparse data situations and for users
issuing the same query from different regions.

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The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th