1 Ocak 2017 Dergi makalesi Açık Erişim

Mehr, Ali Danandeh; Kahya, Ercan

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    <subfield code="a">A Pareto-optimal moving average multigene genetic programming model for daily streamflow prediction</subfield>
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    <subfield code="p">JOURNAL OF HYDROLOGY</subfield>
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    <subfield code="a">Genetic programming (GP) is able to systematically explore alternative model structures of different accuracy and complexity from observed input and output data. The effectiveness of GP in hydrological system identification has been recognized in recent studies. However, selecting a parsimonious (accurate and simple) model from such alternatives still remains a question. This paper proposes a Pareto-optimal moving average multigene genetic programming (MA-MGGP) approach to develop a parsimonious model for single-station streamflow prediction. The three main components of the approach that take us from observed data to a validated model are: (1) data pre-processing, (2) system identification and (3) system simplification. The data pre-processing ingredient uses a simple moving average filter to diminish the lagged prediction effect of stand-alone data-driven models. The multigene ingredient of the model tends to identify the underlying nonlinear system with expressions simpler than classical monolithic GP and, eventually simplification component exploits Pareto front plot to select a parsimonious model through an interactive complexity-efficiency trade-off. The approach was tested using the daily streamflow records from a station on Senoz Stream, Turkey. Comparing to the efficiency results of stand-alone GP, MGGP, and conventional multi linear regression prediction models as benchmarks, the proposed Pareto-optimal MA-MGGP model put forward a parsimonious solution, which has a noteworthy importance of being applied in practice. In addition, the approach allows the user to enter human insight into the problem to examine evolved models and pick the best performing programs out for further analysis. (C) 2017 Elsevier B.V. All rights reserved.</subfield>
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    <subfield code="u">Istanbul Tech Univ, Dept Civil Engn, Hydraul Div, TR-34469 Istanbul, Turkey</subfield>
    <subfield code="a">Kahya, Ercan</subfield>
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    <subfield code="a">Mehr, Ali Danandeh</subfield>
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    <subfield code="a">10.1016/j.jhydrol.2017.04.045</subfield>
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