It is challenging to assess the vulnerability of a cyber-physical power system to data attacks. In order to support vulnerability assessment, with the exception of analytic methods, a suitable platform for security tests needs to be developed. In this paper we analyze the cyber security of energy management system (EMS) against data attacks. First we extend our analytic framework that character...

Conditional independence provides an essential framework to deal with knowledge and uncertainty in Artificial Intelligence, and is fundamental in probability and multivariate statistics. Its associated implication problem is paramount for building Bayesian networks. Unfortunately, the problem does not enjoy a finite ground axiomatization and is already coNP-complete to decide for restricted sub...

In response to this need, the OECD devotes a major effort to the development and analysis of quantitative, internationally comparable indicators, which are published annually in Education at a Glance. These indicators enable educational policy makers and practitioners alike to see their education systems in the light of other countries’ performances and, together with OECD’s country policy revi...

As it is well-known, querying and managing structured data in natural language is a challenging task due to its ambiguity (syntactic and semantic) and its expressiveness. On the other hand, querying, e.g., a relational database or an ontology-based data access system is a well-defined and unambigous task, namely, the task of evaluating a formal query (e.g., an SQL query) of a limited expressive...

the pioneer work of image compression/reconstruction based onfuzzy relational equations (icf) and the related works are introduced. theicf regards an original image as a fuzzy relation by embedding the brightnesslevel into [0,1]. the compression/reconstruction of icf correspond to thecomposition/solving inverse problem formulated on fuzzy relational equations.optimizations of icf can be consequ...

Co-supervision of doctoral theses is on the rise worldwide, but we know little relational dynamics co-supervisory team and student. These teams often must work together for several years, during which supervisors may come go. We interviewed 19 students about their experiences co-supervision found a complex climate characterised by prior relations, merit- network-gaining activities, ‘cushioning’...

The Leximancer system is a relatively new method for transforming lexical co-occurrence information from natural language into semantic patterns in a nunsupervised manner. It employs two stages of co-occurrence information extraction-semantic and relational-using a different algorithm for each stage. The algorithms used are statistical, but they employ nonlinear dynamics and machine learning. T...

This empirical study explores the role of co-players in players’ motivations and experiences of gaming through relational sociological analyses of interview and survey data. The aim is to bring attention to the importance of divergent gaming partners, and to offer some implications for considering co-players in game research and design. Results explore three gaming situations: playing with fami...

Verification by static analysis often hinges on the inference of relational numeric information. In real-world programs, the set of active variables is often not fixed for a given program point due to, for instance, heap-allocated cells or recursive function calls. For these program points, an invariant has to summarize values for traces E where a variable x exists and values for traces N where...