Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: RewardRating: A Mechanism Design Approach to Improve Rating Systems   Nowadays, rating systems play a crucial role in the attraction of customers
for different services. However, as it is difficult to detect a fake rating,
attackers can potentially impact the rating's aggregated score unfairly. This
malicious behavior can negatively affect users and businesses. To overcome this
problem, we take a mechanism-design approach to increase the cost of fake
ratings while providing incentives for honest ratings. Our proposed mechanism
\textit{RewardRating} is inspired by the stock market model in which users can
invest in their ratings for services and receive a reward based on future
ratings. First, we formally model the problem and discuss budget-balanced and
incentive-compatibility specifications. Then, we suggest a profit-sharing
scheme to cover the rating system's requirements. Finally, we analyze the
performance of our proposed mechanism.

24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ