Turkish Journal of Electrical Engineering and Computer Sciences
DOI
10.3906/elk-1810-128
Abstract
One of the hardest challenges in data analysis is perhaps the detection of rare anomalous data buried in a huge normal background. We study this problem by constructing a novel method, which is a combination of the Kullback?Leibler importance estimation procedure based anomaly detection algorithm and linear discriminant classifier. We choose to illustrate it with the example of charged Higgs boson (CHB) search in particle physics. Indeed, the Large Hadron Collider experiments at CERN ensure that CHB signal must be a tiny effect within the irreducible W-boson background. In simulations, different CHB events with different characteristics are produced and judiciously mixed with the non-CHB data, and the proposed method is applied. Our results show that distribution parameters of weak CHB signals can be estimated with high performance. This anomaly detection method is general enough to apply to similar problems in other fields (e.g., astrophysical, medical, engineering problems).
Keywords
Anomaly detection, Kullback?Leibler importance estimation procedure, charged Higgs boson, importance estimation
First Page
3247
Last Page
3257
Recommended Citation
DOĞAN, HATİCE; SÖNMEZ, NASUF; and DEMİR, GÜLESER KALAYCI
(2019)
"Importance-based signal detection and parameter estimation with applications to new particle search,"
Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 27:
No.
4, Article 62.
https://doi.org/10.3906/elk-1810-128
Available at:
https://journals.tubitak.gov.tr/elektrik/vol27/iss4/62
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Computer Engineering Commons, Computer Sciences Commons, Electrical and Computer Engineering Commons
