標題: Comment on "Utilization of Weibull Techniques for Short-Term Data Analysis in Environmental Engineering,'' by Isaiah A. Oke, 2008, 25, 1099-1106
作者: Yeh, Hund-Der
Chen, Yen-Ju
環境工程研究所
Institute of Environmental Engineering
關鍵字: probability plot;linearization;nonlinear regression;residual plot
公開日期: 1-Aug-2009
摘要: The use of linear regression to obtain the parameter estimates for a nonlinear model could lead to imprecise results. This comment is to point out the problem of linearization in the parameter estimation for a nonlinear model. In Oke (2008), the reliability of ultimate BOD (L(0)) and BOD removal rate (k) were first calculated using the Weibull plotting position formula and then the L(0)-reliability and k-reliability data were fit to a nonlinear system-reliability model. Model parameters were estimated based on a linearized model and the linear regression. In this comment, we examine and compare the results of parameter estimation from the linear and nonlinear regressions. According to the residual plots, the nonlinear regression gives better estimates of the parameters than the linear one.
URI: http://dx.doi.org/10.1089/ees.2008.0374
http://hdl.handle.net/11536/6876
ISSN: 1092-8758
DOI: 10.1089/ees.2008.0374
期刊: ENVIRONMENTAL ENGINEERING SCIENCE
Volume: 26
Issue: 8
起始頁: 1365
結束頁: 1367
Appears in Collections:Articles