نتایج جستجو برای: the fletcher
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In this work, we investigate stochastic quasi-Newton methods for minimizing a finite sum of cost functions over decentralized network. We first develop general algorithmic framework, in which each node constructs local, inexact direction that asymptotically approaches the global, exact one at time step. To do so, local gradient approximation is constructed using dynamic average consensus to tra...
Conjugate gradient methods are efficient for smooth optimization problems, while there are rare conjugate gradient based methods for solving a possibly nondifferentiable convex minimization problem. In this paper by making full use of inherent properties of Moreau-Yosida regularization and descent property of modified conjugate gradient method we propose a modified Fletcher-Reeves-type method f...
Arild Angelsen, ∗ Maria Brockhaus, Amy E. Duchelle, Anne Larson, Christopher Martius, William D. Sunderlin, Louis Verchot, Grace Wong, and Sven Wunder School of Economics and Business, Norwegian University of Life Sciences, P.O. Box 5033, N-1432, Ås, Norway Department of Forest Sciences, University of Helsinki, Latokartanonkaari 7, FIN-00014 Helsinki, Finland Center for International Forestry R...
the aim of this study has been to find answers for the following questions: 1. what is the effect of immediate correction on students pronunciation errors? 2. what would be the effect of teaching the more rgular patterns of english pronunciation? 3. is there any significant difference between the two methods of dealing with pronuciation errore, i. e., correction and the teaching of the regular ...
iv abstract this study examined the linguistic behaviors of two iranian efl teachers each of them teaching learners of two similar proficiency levels, a beginner level and an intermediate level, to investigate the relationship between the learners proficiency levels and the amounts and purposes for l1 use by the two teachers. the study was carried out to investigate whether there were differe...
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