Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Estimation of Online Video User Engagement from Features of
  Continuous Emotions   Portraying emotion and trustworthiness is known to increase the appeal of
video content. However, the causal relationship between these signals and
online user engagement is not well understood. This limited understanding is
partly due to a scarcity in emotionally annotated data and the varied
modalities which express user engagement online. In this contribution, we
utilise a large dataset of YouTube review videos which includes ca. 600 hours
of dimensional arousal, valence and trustworthiness annotations. We investigate
features extracted from these signals against various user engagement
indicators including views, like/dislike ratio, as well as the sentiment of
comments. In doing so, we identify the positive and negative influences which
single features have, as well as interpretable patterns in each dimension which
relate to user engagement. Our results demonstrate that smaller boundary ranges
and fluctuations for arousal lead to an increase in user engagement.
Furthermore, the extracted time-series features reveal significant (p<0.05)
correlations for each dimension, such as, count below signal mean (arousal),
number of peaks (valence), and absolute energy (trustworthiness). From this, an
effective combination of features is outlined for approaches aiming to
automatically predict several user engagement indicators. In a user engagement
prediction paradigm we compare all features against semi-automatic
(cross-task), and automatic (task-specific) feature selection methods. These
selected feature sets appear to outperform the usage of all features, e.g.,
using all features achieves 1.55 likes per day (Lp/d) mean absolute error from
valence; this improves through semi-automatic and automatic selection to 1.33
and 1.23 Lp/d, respectively (data mean 9.72 Lp/d with a std. 28.75 Lp/d).

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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: eess
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The categories of this paper are: q-bio
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The categories of this paper are: chao-dyn
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The categories of this paper are: ao-sci
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The categories of this paper are: math
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: cond-mat