Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Renewal Model of Intrusion   We present a probabilistic model of an intrusion in a renewal process. Given
a process and a sequence of events, an intrusion is a subsequence of events
that is not produced by the process. Applications of the model are, for
example, online payment fraud with the fraudster taking over a user's account
and performing payments on the user's behalf, or unexpected equipment failures
due to unintended use.
  We adopt Bayesian approach to infer the probability of an intrusion in a
sequence of events, a MAP subsequence of events constituting the intrusion, and
the marginal probability of each event in a sequence to belong to the
intrusion. We evaluate the model for intrusion detection on synthetic data and
on anonymized data from an online payment system.

20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat
36
The categories of this paper are: cmp-lg