Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dependency-based Anomaly Detection: Framework, Methods and Benchmark   Anomaly detection is an important research problem because anomalies often
contain critical insights for understanding the unusual behavior in data. One
type of anomaly detection approach is dependency-based, which identifies
anomalies by examining the violations of the normal dependency among variables.
These methods can discover subtle and meaningful anomalies with better
interpretation. Existing dependency-based methods adopt different
implementations and show different strengths and weaknesses. However, the
theoretical fundamentals and the general process behind them have not been well
studied. This paper proposes a general framework, DepAD, to provide a unified
process for dependency-based anomaly detection. DepAD decomposes unsupervised
anomaly detection tasks into feature selection and prediction problems.
Utilizing off-the-shelf techniques, the DepAD framework can have various
instantiations to suit different application domains. Comprehensive experiments
have been conducted over one hundred instantiated DepAD methods with 32
real-world datasets to evaluate the performance of representative techniques in
DepAD. To show the effectiveness of DepAD, we compare two DepAD methods with
nine state-of-the-art anomaly detection methods, and the results show that
DepAD methods outperform comparison methods in most cases. Through the DepAD
framework, this paper gives guidance and inspiration for future research of
dependency-based anomaly detection and provides a benchmark for its evaluation.

15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn