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The unsupervised learning technique combined with a feature extraction scheme applied to the clusters labeled as anomalous facilitates expert analysis in characterizing relevant anomalies and faults in flight operations. We present a case study using a large flight operations data set, and discuss results to demonstrate the effectiveness of our approach. Our method is general, and equally applicable to manufacturing processes and other industrial applications.<\/jats:p>","DOI":"10.1515\/auto-2017-0120","type":"journal-article","created":{"date-parts":[[2018,4,6]],"date-time":"2018-04-06T07:41:47Z","timestamp":1523000507000},"page":"291-307","source":"Crossref","is-referenced-by-count":1,"title":["Combining expert knowledge and unsupervised learning techniques for anomaly detection in aircraft flight data"],"prefix":"10.1515","volume":"66","author":[{"given":"Daniel L.\u2009C.","family":"Mack","sequence":"first","affiliation":[{"name":"Kansas City Royals , Kansas City , MO , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gautam","family":"Biswas","sequence":"additional","affiliation":[{"name":"Institute of Software Integrated Systems , Vanderbilt University , Nashville , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hamed","family":"Khorasgani","sequence":"additional","affiliation":[{"name":"Big Data Laboratory , Hitachi America , Santa Clara , CA , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dinkar","family":"Mylaraswamy","sequence":"additional","affiliation":[{"name":"Honeywell Aerospace , Golden Valley , MN , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raj","family":"Bharadwaj","sequence":"additional","affiliation":[{"name":"Honeywell Aerospace , Golden Valley , MN , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2018,4,6]]},"reference":[{"key":"2023033119360885500_j_auto-2017-0120_ref_001_w2aab3b7b2b1b6b1ab1b5b1Aa","doi-asserted-by":"crossref","unstructured":"L. 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