نتایج جستجو برای: recurrent metric

تعداد نتایج: 209350  

2010
TOMÁS CARABALLO DAVID CHEBAN

The aim of this paper is the study of problem of existence of Levitan almost periodic, almost automorphic, recurrent and Poisson stable solutions of seconde order differential equation (1) x′′ = f(σ(t, y), x, x′), (y ∈ Y ) where Y is a complete metric space and (Y,R, σ) is a dynamical system (driving system). For equation (1) with increasing (with respect to second variable) function f the exis...

Journal: :Topology and its Applications 2022

Let ϕ:X×R→X be a continuous flow on compact metric space (X,d). In this article we constructively prove the existence of Lyapunov function for ϕ which is strictly decreasing outside SCRd(ϕ). Such result generalizes Conley's Fundamental Theorem Dynamical Systems strong chain recurrent set.

2016
Youyang Gu Tao Lei Regina Barzilay Tommi S. Jaakkola

We propose a text-based recommendation engine that utilizes recurrent neural networks to flexibly map textual input into continuous vector representations tailored to the recommendation task. Here, the text objects are documents such as Wikipedia articles or question and answer pairs. As neural models require substantial training time, we introduce a sequential component so as to quickly adjust...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده کشاورزی 1391

تبخیر و تعرق یکی از مولفه های مهم در چرخه هیدرولوژی و از عوامل تعیین کننده معادلات انرژی در سطح زمین و توازن آب می باشد و برآورد آن در زمینه های مختلف علوم مانند هیدرولوژی، کشاورزی، جنگل و مرتع و مدیریت منابع آب مورد نیاز است. روش های متداول بر آورد تبخیر و تعرق از اندازه گیری های نقطه ای استفاده کرده و لذا فقط برای مناطق و محدوده های محلی مناسب بوده و به مناطق بزرگ تر و حوضه های آبخیز قابل تعم...

2014
Michael Auli Jianfeng Gao

Neural network language models are often trained by optimizing likelihood, but we would prefer to optimize for a task specific metric, such as BLEU in machine translation. We show how a recurrent neural network language model can be optimized towards an expected BLEU loss instead of the usual cross-entropy criterion. Furthermore, we tackle the issue of directly integrating a recurrent network i...

Journal: :Stroke 2012
Shelagh B Coutts Jayesh Modi Shiel K Patel Heidi Aram Andrew M Demchuk Mayank Goyal Michael D Hill

BACKGROUND AND PURPOSE Minor stroke and transient ischemic attack portend a significant risk of disability. Three possible mechanisms for this include disability not captured by the National Institutes of Health Stroke Scale, symptom progression, or recurrent stroke. We sought to assess the relative impact of these mechanisms on disability in a population of patients with transient ischemic att...

A. Radfar M. Hamidi S. Jahanpanah

This paper,  applies the concept  of KM-fuzzy metric spaces and  introduces a novel concept of KM-fuzzy metric  graphs based on KM-fuzzy metric spaces.  This study, investigates the finite KM-fuzzy metric spaces with respect to metrics and KM-fuzzy metrics and constructs KM-fuzzy metric spaces on any given non-empty sets. It tries to  extend   the concept of KM-fuzzy metric spaces to  a larger ...

In this paper, we prove that a non-Riemannian isotropic Berwald metric or a non-Riemannian (α,β) -metric admits no concurrent vector fields. We also prove that an L-reducible Finsler metric admitting a concurrent vector field reduces to a Landsberg metric.In this paper, we prove that a non-Riemannian isotropic Berwald metric or a non-Riemannian (α,β) -metric admits no concurrent vector fi...

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