tailieunhanh - Application of data mining on evaluation of energy dissipation over low gabion-stepped weir

Results of a study designed to examine the behavior of gabion-stepped weirs for energy dissipation are presented in this paper. The results demonstrate that the decision tree technique can be used as a reasonable method for classification of different parameters involved in energy dissipation through a gabion-stepped weir. | F. SALMASI, M. T. SATTARI, M. PAL Research Article Turk J Agric For 36 (2012) 95-106 © TÜBİTAK doi: Application of data mining on evaluation of energy dissipation over low gabion-stepped weir Farzin SALMASI1, Mohammad Taghi SATTARI1,*, Mahesh PAL2 1 Water Engineering Department, Faculty of Agriculture, University of Tabriz, Tabriz - IRAN 2 Department of Civil Engineering, National Institute of Technology, Kurukshetra, 36119, Haryana - INDIA Received: Abstract: Results of a study designed to examine the behavior of gabion-stepped weirs for energy dissipation are presented in this paper. Laboratory tests were conducted with 8 physical models consisting of 3 different porosities (38%, 40%, and 42%) and 2 slopes (1:1 and 1:2). An iron plate was also placed on each horizontal and vertical step to study and classify the effect of step porosity on the energy dissipation rate. A decision tree technique was used to derive if-then rules in order to classify the energy dissipation through the weir models. Results from this study suggest that a decision tree model has an accuracy of 85% in predicting the energy dissipation through a gabion-stepped weir using different attributes. The results demonstrate that the decision tree technique can be used as a reasonable method for classification of different parameters involved in energy dissipation through a gabion-stepped weir, and it can effectively identify the influence of various parameters on energy dissipation. Key words: Decision tree, energy dissipation, gabion, porosity, slope, stepped weir Introduction Gabion weirs are commonly used in water structures such as small earth dams, soil conservation works, retaining walls, river training works at bends, and intake. Gabion weirs are easy to build, structurally stable, flexible, and resistant to water loads. This structure is an economic alternative to other types of weirs in areas in which stone is readily available. A stepped weir is