Search results for "REPRESENTATION"

Working group on hadron polarizabilities and form factors

1998

A Knowledge-Based System for the Automatic Generation of Plant Shutdown and Startup Schedules

1988

Abstract When the shutdown of a plant, or part of it, has been decided as consequence of a major fault, the generation of a safe shutdown schedule may be, for large and complex plants, a very difficult and delicate task. The same problem may be found when the plant must be restarted after the fault has been repaired, for the generation of a start-up schedule. The use of a knowledge-based system appears to be a suitable answer to this problem, allowing a high level of safety and a very fast generation process. The paper examines the process knowledge that needs to be included in such a knowledge-based system and proposes some knowledge representation forms that appear suitable for the task t…

An adaptive multimeme algorithm for designing HIV multidrug therapies.

2007

This paper proposes a period representation for modeling the multidrug HIV therapies and an Adaptive Multimeme Algorithm (AMmA) for designing the optimal therapy. The period representation offers benefits in terms of flexibility and reduction in dimensionality compared to the binary representation. The AMmA is a memetic algorithm which employs a list of three local searchers adaptively activated by an evolutionary framework. These local searchers, having different features according to the exploration logic and the pivot rule, have the role of exploring the decision space from different and complementary perspectives and, thus, assisting the standard evolutionary operators in the optimizati…

Robust fault tolerant tracking controller design for vehicle dynamics: A descriptor approach

2015

Abstract In this paper, an active Fault Tolerant Tracking Controller (FTTC) scheme dedicated to vehicle dynamics system is proposed. To address the challenging problem, an uncertain dynamic model of the vehicle is firstly developed, by considering the lateral forces nonlinearities as a Takagi–Sugeno (TS) representation, the sideslip angle as unmeasurable premise variables and the road bank angle as an unknown input. Subsequently, the vehicle dynamic states with the sensor faults are jointly estimated by a descriptor observer on the basis of the roll rate and the steering angle measures. Then a fault tolerant tracking controller is synthesized and solutions are proposed in terms of Linear Ma…

A Neural Network model for the Evaluation of Text Complexity in Italian Language: a Representation Point of View

2018

Abstract The goal of a text simplification system (TS) is to create a new text suited to the characteristics of a reader, with the final goal of making it more understandable.The building of an Automatic Text Simplification System (ATS) cannot be separated from a correct evaluation of the text complexity. In fact the ATS must be capable of understanding if a text should be simplified for the target reader or not. In a previous work we have presented a model capable of classifying Italian sentences based on their complexity level. Our model is a Long Short Term Memory (LSTM) Neural Network capable of learning the features of easy-to-read and complex-to-read sentences autonomously from a anno…

Thompson Sampling Guided Stochastic Searching on the Line for Adversarial Learning

2015

The multi-armed bandit problem has been studied for decades. In brief, a gambler repeatedly pulls one out of N slot machine arms, randomly receiving a reward or a penalty from each pull. The aim of the gambler is to maximize the expected number of rewards received, when the probabilities of receiving rewards are unknown. Thus, the gambler must, as quickly as possible, identify the arm with the largest probability of producing rewards, compactly capturing the exploration-exploitation dilemma in reinforcement learning. In this paper we introduce a particular challenging variant of the multi-armed bandit problem, inspired by the so-called N-Door Puzzle. In this variant, the gambler is only tol…

Developments Relevant to the Use of Tools in Mathematics

2016

This chapter explores developments in mathematics, computing, mathematics education and scholarship relevant to understanding tools from 1960 to the time of writing. This exploration is biased in accentuating influences relevant to tools and mathematics education. The chapter presents a broad landscape and focuses on selected technological advances, ideas and people that are considered important. The chapter begins with a section charting developments in mathematics, computing and education followed by a section on intellectual trends relevant to understanding tools and tool use. The final section focuses on the development of ideas in mathematics education regarding tools and tool use.

Media and Newspaper Representations

2006

In recent years there has been a large expansion of European scholarship on the representation of men and masculinities in a wide variety of media, including film, television, video, magazines, painting, fine art, music, dance, Internet, photography and advertising (for example, Middleton, 1992; Pedersen et al., 1996; Edwards, 1997; Nixon, 1997; Sterr, 1997; Penttila, 1999; Jokinen, 2000). However, relatively little attention has been given to the mundane medium of daily newspapers. When studying men, the daily press appears to have been frequently taken-for-granted, unlike, say, Hollywood film. Newspapers are literally everyday phenomena; their very ordinariness may mean that they are not …

Geographically representative scholarship and internationalization in school and educational psychology: A bibliometric analysis of eight journals fr…

2018

Abstract Although the discipline of school and educational psychology is arguably international (e.g., relevant research and practice is evident in more than 80 countries), there has been limited research examining the international scholarship published in school and educational psychology journals. Such an assessment is important because it provides one important metric for better understanding the field's level of internationalization. The purpose of this study was to evaluate every article (N = 4456) published from 2002 to 2016 across eight school and educational psychology journals that publish international scholarship. Each article's authorship and participant data were coded and rep…

Poisson-Nijenhuis structures and the Vinogradov bracket

1994

We express the compatibility conditions that a Poisson bivector and a Nijenhuis tensor must fulfil in order to be a Poisson-Nijenhuis structure by means of a graded Lie bracket. This bracket is a generalization of Schouten and Frolicher-Nijenhuis graded Lie brackets defined on multivector fields and on vector valued differential forms respectively.