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Comparing Anomaly D...
Comparing Anomaly Detection and Classification Algorithms: A Case Study in Two Domains
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- Staron, Miroslaw, 1977 (författare)
- Göteborgs universitet,University of Gothenburg
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- Herges, Helena Odenstedt (författare)
- Sahlgrenska universitetssjukhuset,Sahlgrenska University Hospital,Telefonaktiebolaget L M Ericsson,Ericsson
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- Block, Linda (författare)
- Telefonaktiebolaget L M Ericsson,Ericsson
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- Sjödin, Martin (författare)
- Telefonaktiebolaget L M Ericsson,Ericsson
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(creator_code:org_t)
- 2023
- 2023
- Engelska.
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Ingår i: Lecture Notes in Business Information Processing. - 1865-1356 .- 1865-1348. ; 472 LNBIP, s. 121-136
- Relaterad länk:
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Utilizing large data sets in practical scenarios usually requires identifying, annotating and classifying rare events or anomalies. Although several methods exists, there are two classes of algorithms: anomaly detection algorithms and classification algorithms. Both types of algorithms have different characteristics and in this paper, we set out to compare them on two cases. We use data from a neurointensive care unit and from microwave radio transmissions. We apply Isolation Forest and Random Forest algorithms to find events in the data that occur with a frequency of ca. 1%. The results show that classification algorithms (Random Forest) perform better and can achieve up to 100% accuracy, while the anomaly detection algorithms (Isolation Forest) can achieve only 73% at best. Based on the results, we conclude that it is better to invest in annotating data á priori and use classification algorithms, despite the lower costs of using the anomaly detection algorithms.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Nyckelord
- neuro-intensive care
- Machine learning
- telecommunication
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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