نتایج جستجو برای: variable forgetting factor vff

تعداد نتایج: 1087042  

2015
Yisong Wang Kewen Wang Zhe Wang Zhiqiang Zhuang

The theory of (variable) forgetting has received significant attention in nonmonotonic reasoning, especially, in answer set programming. However, the problem of establishing a theory of forgetting for some expressive nonmonotonic logics such as McCarthy’s circumscription is rarely explored. In this paper a theory of forgetting for propositional circumscription is proposed, which is not a straig...

Journal: :Monthly Notices of the Royal Astronomical Society 2022

ABSTRACT The spectra of Wolf–Rayet (WR) stars exhibit strong, broad emission lines that originate in the wind. These winds are radiatively driven and susceptible to hydrodynamic instabilities result formation clumps. When modelling WR volume-filling factor (VFF) approach is usually employed treat clumpy winds. However, it based on assumption entire wind mass resides optically thin clumps, which...

Journal: :مدیریت شهری 0
seyed hamidreza hashemi hamideh reshadatjou nadergholi ghourchian parivash jafari

this research aimed to identify the dimensions, components, priorities and distinction between existing and desired condition, organizational forgetting management and provides a model for appropriate mechanisms for controlling it at university. the research in term of goal is practical and giving quantitative data and method is descriptive-survey research. in order to validate the measurement,...

2004
Kaile Su Guanfeng Lv Yan Zhang

In this paper, we investigate knowledge reasoning within a simple framework called knowledge structure. We use variable forgetting as a basic operation for one agent to reason about its own or other agents’ knowledge. In our framework, two notions namely agents’ observable variables and the weakest sufficient condition play important roles in knowledge reasoning. Given a background knowledge ba...

Journal: :Technometrics 2006
Ismael Sánchez

This article proposes an adaptive forgetting factor for the recursive estimation of time varying models. The proposed procedure is based on the Cook's distance of the new observation. It is proven that the proposed procedure encompasses the adaptive features of classic adaptive forgetting factors and, therefore, has a larger adaptability than its competitors. The proposed forgetting factor is a...

Journal: :J. Artif. Intell. Res. 2009
Kaile Su Abdul Sattar Guanfeng Lv Yan Zhang

In this paper, we investigate knowledge reasoning within a simple framework called knowledge structure. We use variable forgetting as a basic operation for one agent to reason about its own or other agents’ knowledge. In our framework, two notions namely agents’ observable variables and the weakest sufficient condition play important roles in knowledge reasoning. Given a background knowledge ba...

Journal: :J. Artif. Intell. Res. 2003
Jérôme Lang Paolo Liberatore Pierre Marquis

Independence -- the study of what is relevant to a given problem of reasoning -- has received an increasing attention from the AI community. In this paper, we consider two basic forms of independence, namely, a syntactic one and a semantic one. We show features and drawbacks of them. In particular, while the syntactic form of independence is computationally easy to check, there are cases in whi...

2004
Václav Šmídl Anthony Quinn

In this paper, we study Bayesian identification of the nonstationary parameters of the AR process. It is traditionally achieved via forgetting. Numerically efficient solution is available if the forgetting factor is known a priori. In this paper, we propose a joint Bayesian identification of the AR parameters and the unknown forgetting factor. The resulting intractable posterior distribution is...

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