پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 31 |
| تعداد شمارهها | 834 |
| تعداد مقالات | 8,015 |
| تعداد مشاهده مقاله | 14,852,519 |
| تعداد دریافت فایل اصل مقاله | 9,586,536 |
PEDOMODELS FITTING WITH FUZZY LEAST SQUARES REGRESSION | ||
| Iranian Journal of Fuzzy Systems | ||
| مقاله 5، دوره 1، شماره 2، دی 2004، صفحه 45-61 اصل مقاله (196.55 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22111/ijfs.2004.505 | ||
| نویسندگان | ||
| JAHANGARD MOHAMMADI1؛ SYED MAHMOUD TAHERI* 2 | ||
| 1SOIL SCIENCE DEPARTMENT, COLLEGE OF AGRICULTURE, SHAHREKORD UNIVERSITY, SHAHREKORD, IRAN. | ||
| 2SCHOOL OF MATHEMATICAL SCIENCES, ISFAHAN, UNIVERSITY OF TECHNOLOGY, ISFAHAN 84156, IRAN. | ||
| چکیده | ||
| Pedomodels have become a popular topic in soil science and environmental research. They are predictive functions of certain soil properties based on other easily or cheaply measured properties. The common method for fitting pedomodels is to use classical regression analysis, based on the assumptions of data crispness and deterministic relations among variables. In modeling natural systems such as soil system, in which the above assumptions are not held true, prediction is influential and we must therefore attempt to analyze the behavior and structure of such systems more realistically. In this paper we consider fuzzy least squares regression as a means of fitting pedomodels. The theoretical and practical considerations are illustrated by developing some examples of real pedomodels. | ||
| کلیدواژهها | ||
| Pedomodels؛ Pedotransfer Functions؛ Fuzzy Least Squares؛ Fuzzy regression | ||
| مراجع | ||
|
[1] J. Bouma, Using soil survey data for qualitative land evaluation. In B.A. Stewart (Editor), Advances in Soil Sciences, Vol. 9. Springer-Verlag, New York, (1989) 177-213. [2] R. L. Donahue, R. W. Miller, and J. C. Shickluna, Soils, an introduction to soils and plant growth. Prentice-Hall, (1983). [3] K. J. Kim, H. Moskowitz, and M. Koksalan, Fuzzy versus statistical linear regression, Euro. J. Oper. Res., 92 (1996) 417-434. [4] B. Minasny, and A. B. McBratney, The neuro-m method for fitting neural network parametric pedotransfer functions, Soil Sci. Soc. Am. J., 66 (2002) 352-361. [5] A. L. Page, R. H. Miller, and D. R. Keeney, Methods of soil analysis, Part 2, Soil Science Society of Ameriac, Madison, Wisconsin, (1982). [6] B. Sadeghpour, and D. Gien, A goodness of fit index to reliability analysis in fuzzy model. In A. Grmela (Editor), Advances in Intelligent Systems, Fuzzy Systems, Evolutionary Computation, WSEAS Press, Greece, (2002). [7] E. Salchow, R. Lal, N. R. Fausey, and A. Ward, Pedotransfer functions for variable alluvial soils in southern Ohio, Geoderma, 73 (1996) 165-181. [8] S. M. Taheri, Trends in fuzzy statistics, Austrian J. Stat., 32 (2003) 239-257. [9] P. Wang, Fuzzy sets and its applications, Publishing House of Shanghai Science and Technology, Shanghai, (1983). [10] R. Xu, A linear regression model in fuzzy environment, Adv. Modelling Simulation, 27 (1991) 31- 40. [11] R. Xu, and C. Li , Multidimensional least-squares fitting with fuzzy model, Fuzzy Sets and Systems, 119 (2001) 215-223. [12] H. J. Zimmermann, Fuzzy set theory and its applications, Kluwer Academic, Boston, (1991). | ||
|
آمار تعداد مشاهده مقاله: 3,223 تعداد دریافت فایل اصل مقاله: 2,634 |
||