Graph-based approach for outlier detection in sequential data and its application on stock market and weather data
Outlier detection has a large variety of applications ranging from detecting intrusion in a computer network, to forecasting hurricanes and tornados in weather data, to identifying indicators of potential crisis in stock market data, etc. The problem of finding outliers in sequential data has been w...
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| Veröffentlicht in: | Knowledge-based systems Jg. 61; S. 89 - 97 |
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01.05.2014
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| Abstract | Outlier detection has a large variety of applications ranging from detecting intrusion in a computer network, to forecasting hurricanes and tornados in weather data, to identifying indicators of potential crisis in stock market data, etc. The problem of finding outliers in sequential data has been widely studied in the data mining literature and many techniques have been developed to tackle the problem in various application domains. However, many of these techniques rely on the peculiar characteristics of a specific type of data to detect the outliers. As a result, they cannot be easily applied to different types of data in other application domains; they should at least be tuned and customized to adapt to the new domain. They also may need certain amount of training data to build their models. This makes them hard to apply especially when only a limited amount of data is available. The work described in this paper tackle the problem by proposing a graph-based approach for the discovery of contextual outliers in sequential data. The developed algorithm offers a higher degree of flexibility and requires less amount of information about the nature of the analyzed data compared to the previous approaches described in the literature. In order to validate our approach, we conducted experiments on stock market and weather data; we compared the results with the results from our previous work. Our analysis of the results demonstrate that the algorithm proposed in this paper is successful and effective in detecting outliers in data from different domains, one financial and the other meteorological. |
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| AbstractList | Outlier detection has a large variety of applications ranging from detecting intrusion in a computer network, to forecasting hurricanes and tornados in weather data, to identifying indicators of potential crisis in stock market data, etc. The problem of finding outliers in sequential data has been widely studied in the data mining literature and many techniques have been developed to tackle the problem in various application domains. However, many of these techniques rely on the peculiar characteristics of a specific type of data to detect the outliers. As a result, they cannot be easily applied to different types of data in other application domains; they should at least be tuned and customized to adapt to the new domain. They also may need certain amount of training data to build their models. This makes them hard to apply especially when only a limited amount of data is available. The work described in this paper tackle the problem by proposing a graph-based approach for the discovery of contextual outliers in sequential data. The developed algorithm offers a higher degree of flexibility and requires less amount of information about the nature of the analyzed data compared to the previous approaches described in the literature. In order to validate our approach, we conducted experiments on stock market and weather data; we compared the results with the results from our previous work. Our analysis of the results demonstrate that the algorithm proposed in this paper is successful and effective in detecting outliers in data from different domains, one financial and the other meteorological. |
| Author | Kianmehr, Keivan Alhajj, Reda Rokne, Jon Addam, Omar Afra, Salim Koochakzadeh, Negar Rahmani, Ali Zarour, Omar |
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| Cites_doi | 10.1145/1341012.1341075 10.1111/j.1467-9671.2006.00256.x 10.1016/j.ins.2006.09.013 10.1145/1081870.1081917 10.1016/S0167-8655(03)00003-5 10.1007/3-540-36175-8_40 10.2498/cit.2006.04.04 10.1109/CSAC.2003.1254306 10.1145/502512.502567 10.1109/TAI.1999.809773 10.1145/956676.956683 10.1007/s10115-006-0026-6 10.1109/SURV.2010.021510.00088 10.1145/508791.508835 10.1007/s10844-011-0183-2 10.1109/ICDE.2011.5767885 10.1109/69.755614 10.1023/A:1023455925009 10.1007/s101150200013 10.1145/335191.335437 10.3233/IDA-2009-0375 10.1007/978-3-642-04394-9_39 10.1007/s10489-005-4610-3 10.1142/S0218194010004669 10.1109/ICDM.2004.10097 |
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| Keywords | Outlier detection Data mining Stock market Graph-based algorithm Weather data |
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| SubjectTerms | Algorithms Climatology Computer networks Construction Data mining Graph-based algorithm Markets Outlier detection Raw materials Stock market Weather Weather data |
| Title | Graph-based approach for outlier detection in sequential data and its application on stock market and weather data |
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