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<doi>0723-cd</doi>
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<article-title>Data-Driven Extraction of Association Rules of Dependent Abnormal Behaviour Groups</article-title>
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<author>Federico Antonello<sup>1</sup>, Piero Baraldi<sup>1,a</sup>, Ahmed Shokry<sup>1</sup>, Enrico Zio<sup>1,2</sup>, Ugo Gentile<sup>3</sup> and Luigi Serio<sup>3</sup></author>

<aff><sup>1</sup>Energy Department, Politecnico di Milano, Via Lambruschini, Milan, Italy</aff>

<email><a href="mailto:piero.baraldi@polimi.it"><sup>a</sup>piero.baraldi@polimi.it</a></email>

<aff><sup>2</sup>MINES ParisTech, PSL Research University, CRC, Sophia Antipolis, France.<br/>Eminent Scholar, Department of Nuclear Engineering, College of Engineering, Kyung Hee University, Republic of Korea</aff> 

<aff><sup>3</sup>CERN, 1211 Geneva 23, Switzerland</aff>

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<title>ABSTRACT</title>
<p>This work proposes a methodology for identifying dependent abnormal behaviours through the extraction of association rules from data. The practical case considered makes use of a database of alarms generated by different supervision systems of the CERN (European Centre for Nuclear Research) technical infrastructure. The methodology is based on the representation of the alarm database with a binary matrix and the use of the Apriori algorithm for mining association rules. An application to a large-scale database of alarms generated by various monitoring systems of the point 8 of CERN is presented.</p>
<p><italic>Keywords: </italic>Complex Technical Infrastructures, Dependent Abnormal Behaviours, Association Rules, Alarms, Data Mining, Alarm Database Representation.</p>
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