Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Who is Really Affected by Fraudulent Reviews? An analysis of shilling
  attacks on recommender systems in real-world scenarios   We present the results of an initial analysis conducted on a real-life
setting to quantify the effect of shilling attacks on recommender systems. We
focus on both algorithm performance as well as the types of users who are most
affected by these attacks.

32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom