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- W2488701552 abstract "Predicting minority class sequence patterns from the noisy and unbalanced sequential datasets is a challenging task. To solve this problem, we proposed a new approach called extreme outlier elimination and hybrid sampling technique. We use k Reverse Nearest Neighbors (kRNNs) concept as a data cleaning method for eliminating extreme outliers in minority regions. Hybrid sampling technique, a combination of SMOTE to oversample the minority class sequences and random undersampling to undersample the majority class sequences is used for improving minority class prediction. This method was evaluated in terms of minority class precision, recall and f-measure on syntactically simulated, highly overlapped sequential dataset named Hill-Valley. We conducted the experiments with k-Nearest Neighbour classifier and compared the performance of our approach against simple hybrid sampling technique. Results indicate that our approach does not sacrifice one class in favor of the other, but produces high predictions for both fraud and non-fraud classes." @default.
- W2488701552 created "2016-08-23" @default.
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- W2488701552 date "2012-01-01" @default.
- W2488701552 modified "2023-09-23" @default.
- W2488701552 title "Unbalanced Sequential Data Classification using Extreme Outlier Elimination and Sampling Techniques" @default.
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- W2488701552 doi "https://doi.org/10.4018/978-1-61350-056-9.ch005" @default.
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