Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Users prefer Guetzli JPEG over same-sized libjpeg   We report on pairwise comparisons by human raters of JPEG images from libjpeg
and our new Guetzli encoder. Although both files are size-matched, 75% of
ratings are in favor of Guetzli. This implies the Butteraugli psychovisual
image similarity metric which guides Guetzli is reasonably close to human
perception at high quality levels. We provide access to the raw ratings and
source images for further analysis and study.

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The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
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The categories of this paper are: chem-ph
16
The categories of this paper are: stat
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The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
20
The categories of this paper are: acc-phys