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dc.contributor.authorOstovar, A
dc.contributor.authorLeemans, SJJ
dc.contributor.authorRosa, ML
dc.date.accessioned2020-12-14T05:34:25Z
dc.date.available2020-12-14T05:34:25Z
dc.date.issued2020-05-08
dc.identifier.citationOstovar, A., Leemans, S. J. J. & Rosa, M. L. (2020). Robust drift characterization from event streams of business processes. Association for Computing Machinery (ACM).
dc.identifier.issn1556-4681
dc.identifier.urihttp://hdl.handle.net/11343/253947
dc.description.abstract<jats:p> Process workers may vary the normal execution of a business process to adjust to changes in their operational environment, e.g., changes in workload, season, or regulations. Changes may be simple, such as skipping an individual activity, or complex, such as replacing an entire procedure with another. Over time, these changes may negatively affect process performance; hence, it is important to identify and understand them early on. As such, a number of techniques have been developed to detect <jats:italic>process drifts</jats:italic> , i.e., statistically significant changes in process behavior, from process event logs (offline) or event streams (online). However, detecting a drift without characterizing it, i.e., without providing explanations on its nature, is not enough to help analysts understand and rectify root causes for process performance issues. Existing approaches for drift characterization are limited to simple changes that affect individual activities. This article contributes an efficient, accurate, and noise-tolerant automated method for characterizing complex drifts affecting entire process fragments. The method, which works both offline and online, relies on two cornerstone techniques, one to automatically discover process trees from event streams (logs) and the other to transform process trees using a minimum number of change operations. The operations identified are then translated into natural language statements to explain the change behind a drift. The method has been extensively evaluated on artificial and real-life datasets, and against a state-of-the-art baseline method. The results from one of the real-life datasets have also been validated with a process stakeholder. </jats:p>
dc.languageen
dc.publisherAssociation for Computing Machinery (ACM)
dc.titleRobust drift characterization from event streams of business processes
dc.typeReport
dc.identifier.doi10.1145/3375398
melbourne.affiliation.departmentComputing and Information Systems
melbourne.source.titleACM Transactions on Knowledge Discovery from Data
melbourne.source.volume14
melbourne.source.pages1-57
melbourne.identifier.arcDP150103356
melbourne.elementsid1346529
melbourne.openaccess.urlhttps://eprints.qut.edu.au/200052/1/121158.pdf
melbourne.openaccess.statusPublished version
melbourne.contributor.authorLa Rosa, Marcello
dc.identifier.eissn1556-472X
melbourne.identifier.fundernameidAustralian Research Council, DP150103356
melbourne.accessrightsAccess this item via the Open Access location


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