Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: America Tweets China: A Fine-Grained Analysis of the State and
  Individual Characteristics Regarding Attitudes towards China   The U.S.-China relationship is arguably the most important bilateral
relationship in the 21st century. Typically it is measured through opinion
polls, for example, by Gallup and Pew Institute. In this paper, we propose a
new method to measure U.S.-China relations using data from Twitter, one of the
most popular social networks. Compared with traditional opinion polls, our
method has two distinctive advantages. First, our sample size is significantly
larger. National opinion polls have at most a few thousand samples. Our data
set has 724,146 samples. The large size of our data set enables us to perform
state level analysis, which so far even large opinion polls have left
unexplored. Second, our method can control for fixed state and date effects. We
first demonstrate the existence of inter-state and inter-day variances and then
control for these variances in our regression analysis. Empirically, our study
is able to replicate the stylized results from opinion polls as well as
generate new insights. At the state level, we find New York, Michigan, Indiana
and Arizona are the top four most China-friendly states. Wyoming, South Dakota,
Kansas and Nevada are most homogeneous. At the individual level, we find
attitudes towards China improve as an individual's Twitter experience grows
longer and more intense. We also find individuals of Chinese ethnicity are
statistically more China-friendly.

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The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
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The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
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The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
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The categories of this paper are: hep-ex
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The categories of this paper are: chao-dyn