نتایج جستجو برای: fuzzy and probabilistic uncertainty

تعداد نتایج: 16875986  

Journal: :journal of advances in computer research 2014
nahid ebrahimi meymand aliakbar gharaveisi

anti-lock braking system (abs) is a nonlinear and time varying system including uncertainty, so it cannot be controlled by classic methods. intelligent methods such as fuzzy controller are used in this area extensively; however traditional fuzzy controller using simple type-1 fuzzy sets may not be robust enough to overcome uncertainties. for this reason an interval type-2 fuzzy controller is de...

2015
Jhonatan Garcia Jeff Z. Pan Achille Fokoue

Data in real world applications is often subject to some kind of uncertainty, which can be due to incompleteness, unreliability or inconsistency. This poses a great challenge for ontology-based data access (OBDA) applications, which are expected to provide a meaningful answers to queries, even under uncertain domains. Several extensions of classical OBDA systems has been proposed to address thi...

Journal: :European Journal of Operational Research 2006
David L. Olson Desheng Dash Wu

Multiattribute decision making involves tradeoffs among alternative performances over multiple attributes. The accuracy of performance measures are usually assumed to be accurate. Most multiattribute models also assume given values for the relative importance of weights for attributes. However, there is usually some uncertainty involved in both of these model inputs. Outranking multiattribute m...

2005
Eugenio Aguirre Antonio González Rafael Muñoz

Map-Based Localization approaches use a local map of the sensed environment that is matched against a previously stored map to correct the robot localization in the world. In many cases these methods are based on a probabilistic representation of the spatial uncertainty and use the Kalman Filter (KF) or the Extended Kalman Filter (EKF) to update the robot’s location estimation. On the other han...

Journal: :Fuzzy Sets and Systems 2006
Yuji Yoshida Masami Yasuda Jun-ichi Nakagami Masami Kurano

This paper discusses two topics on fuzzy random variables in decision making. One is a new evaluation method of fuzzy random variables, and the other is to present a mathematical model in financial engineering by fuzzy random variables. The evaluation method is introduced as mean values defined by fuzzy measures, and it is also applicable to fuzzy numbers and fuzzy stochastic process defined by...

Journal: :Int. J. Intell. Syst. 2016
Vladik Kreinovich Hung T. Nguyen Songsak Sriboonchitta

Fuzzy techniques have been originally designed to describe imprecise (“fuzzy”) expert knowledge. Somewhat surprisingly, fuzzy techniques have also been successfully used in situations without expert knowledge, when all we have is data. In this paper, we explain this surprising phenomenon by showing that the need for optimal processing of data (including crisp data) naturally leads to fuzzy and ...

2013
Davide Martinetti Susana Díaz Susana Montes Bernard De Baets

Imprecise choices can be described using either a probabilistic or a fuzzy formalism. No relation between them has been studied so far. In this contribution we present a connection between the two formalisms that strongly makes use of fuzzy implication operators and t-norms. In this framework, Luce’s Choice Axiom turns out to be a special case when the product t-norm is considered and other sim...

2005
Vladik Kreinovich Daniel J. Berleant Scott Ferson Weldon A. Lodwick

Probabilistic and . . . Interval . . . Why Not Maximum . . . Chip Design: Case . . . General Approach: . . . Interval Approach: . . . Extension of Interval . . . Successes (cont-d) Challenges Problem Main Idea: Use Moments Formulation of the . . . Result Case Study: . . . General Problem Case Study: Detecting . . . Outlier Detection . . . Outlier Detection . . . Fuzzy Uncertainty: In . . . Ackn...

2011
Olufunmilayo Obembe Christopher D. Buckingham

Probabilistic models can be a combination of graph and probability theory that provide numerous advantages when it comes to the representation of domains involving uncertainty. In this paper, we present the development of a chain graph for assessing the risks associated with mental health problems, which is a domain that has high amounts of inherent uncertainty. The Galatean mental health Risk ...

2005
Maria Silvia Pini Francesca Rossi Kristen Brent Venable

Preferences and uncertainty occur in many real-life problems. The theory of possibility is one non-probabilistic way of dealing with uncertainty, which allows for easy integration with fuzzy preferences. In this paper we consider an existing technique to perform such an integration and, while following the same basic idea, we propose various alternative semantics which allow us to observe both ...

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