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@Article{Kattan:2015:IS, author = "Ahmed Kattan and Shaheen Fatima and Muhammad Arif", title = "Time-series event-based prediction: An unsupervised learning framework based on genetic programming", journal = "Information Sciences", volume = "301", pages = "99--123", year = "2015", ISSN = "0020-0255", DOI = "doi:10.1016/j.ins.2014.12.054", URL = "http://www.sciencedirect.com/science/article/pii/S0020025515000067", abstract = "In this paper, we propose an unsupervised learning framework based on Genetic Programming (GP) to predict the position of any particular target event (defined by the user) in a time-series. GP is used to automatically build a library of candidate temporal features. The proposed framework receives a training set S = { ( V a ) | a = a ... n } , where each V a is a time-series vector such that forall V a elementof S , V a = { ( x t ) | t = a ... t max } where t max is the size of the time-series. All V a elementof S are assumed to be generated from the same environment. The proposed framework uses a divide-and-conquer strategy for the training phase. The training process of the proposed framework works as follow. The user specifies the target event that needs to be predicted (e.g., Highest value, Second Highest value,..., etc.). Then, the framework classifies the training samples into different Bins, where Bins = { ( b i ) | i = a ... t max } , based on the time-slot t of the target event in each V a training sample. Each b i elementof Bins will contain a subset of S. For each b i , the proposed framework further classifies its samples into statistically independent clusters. To achieve this, each b i is treated as an independent problem where GP is used to evolve programs to extract statistical features from each b i 's members and classify them into different clusters using the K-Means algorithm. At the end of the training process, GP is used to build an `event detector' that receives an unseen time-series and predicts the time-slot where the target event is expected to occur. Empirical evidence on artificially generated data and real-world data shows that the proposed framework significantly outperforms standard Radial Basis Function Networks, standard GP system, Gaussian Process regression, Linear regression, and Polynomial Regression.", keywords = "genetic algorithms, genetic programming, Unsupervised learning, Time-series, K-Means, Prediction, Event detection", }

Genetic Programming entries for Ahmed Kattan Shaheen Fatima Muhammad Arif