نتایج جستجو برای: Sen’s slope estimator
تعداد نتایج: 86893 فیلتر نتایج به سال:
در این تحقیق اثر تغییر اقلیم بر مراحل فنولوژی گندم در کرمانشاه بررسی شده است در ابتدا رخداد تغییر اقلیم برای دوره پایه (2008 تا 1988) در منطقه با استفاده از دو آزمون من-کندال و sens estimator slope ارزیابی شد نتایج نشان داد که متوسط دمای سالانه دارای روند افزایشی و همچنین متوسط بارندگی های سالانه دارای روند کاهشی می باشد. در ادامه هم با ریز مقیاس نمایی آماری داده های خروجی مدل ccsm4 با استفاده ...
abstract the aim of this paper is to investigate annual and seasonal precipitation trends of some selective meteorological stations of central region in iran using non-parametric methods. two non-parametric methods including mann-kendall and sen's estimator slope methods were used here to analyze the seasonal and annual trends of precipitation data. some 48 meteorological stations in centr...
In this paper, we propose a new estimator: the Slope SVM, which minimizes the hinge loss with the Slope penalization introduced by [3]. We study the asymptotical behavior of the `2 error between the theoretical hinge loss minimizer and the Slope estimator. We prove Slope achieves a (k/n) log(p/k) rate with high probability and in expectation under the Weighted Restricted Eigenvalue Condition. T...
The slope method has customarily been used and is still used for inversion of atmospheric optical parameters, extinction, and backscatter in homogeneous atmospheres from lidar returns. Our aim is to study the underlying statistics of the old slope method and ultimately to compare its inversion performance with that of the present-day nonlinear least-squares solution (the so-called exponential-c...
This paper proposes a rank-based estimator for a location parameter in the binary choice model under a monotonic index and symmetry condition, given an initial Jnconsistent estimator for the slope parameter. The estimator converges at the usual parametric rate. Compared with existing estimators, no nonparametric smoothing is needed here. A small Monte Carlo study illustrates the usefulness of t...
هدف از انجام این تحقیق، بررسی روند تغییرات بارندگیهای فصلی و سالانه چند ایستگاه منتخب در حوزه مرکزی ایران با استفاده از روشهای ناپارامتری میباشد. دو آزمون من- کندال و Sen’s Estimator Slope که جزو متداولترین روشهای ناپارامتری به شمار میروند جهت تحلیل روند دادههای بارندگی در مقیاسهای فصلی و سالانه به کار گرفته شدند. 48 ایستگاه بارانسنجی واقع درحوزه مرکزی ایران که در بازه زمانی 1350 الی 1...
In this paper, we propose two time of arrival estimators for ultra wideband signals based on the phase difference between the discrete Fourier transforms (DFT) of the transmitted and received signals. The first estimator is based on the slope of the unwrapped phase and the second one on the absolute unwrapped phase. We derive the statistics of the unwrapped phase. We show that slope-based estim...
helpful discussions and the referees for thorough reviews of earlier drafts. 2 ABSTRACT Various estimators of slope,· intercept, and mean response in the simple linear regression problem are compared in terms of unbiasedness, efficiency, breakdown, and mean squared error. Theil's estimator of slope and two intercept estimators based on Theil's estimator are recommended for inclusion in nonparam...
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