In this paper we consider the modern theory of the Bayesian brain from cognitive neurosciences in the light of recommender systems and expose potentials for our community. In particular, we elaborate on noisy user feedback and the thus resulting multicomponent user models, which have indeed a biological origin. In real user experiments we observe the impact of both factors directly in a repeate...

An object-oriented database model can support features such as abstract data types, methods , encapsulation, subtyping (or inheritance), complex structures, and object identity. The processing of queries in such a model also entails support for these features. Query optimization will require new techniques for supporting the object-oriented features. Although many of the problems that must be s...

We propose in this article an object-oriented approach to rewriting queries using views. Our approach aims to mitigate certain limitations of existing query rewriting approaches. Among these limitations, the inconsideration of certain types of object-oriented complex queries or the lack of uniformity of this approaches compared to the object-oriented model. The proposed approach is based, on on...

The integration of concurrent and object-oriented programming, although promising, presents problems that have not yet been fully explored. In this paper we attempt to identify issues in the design of concurrent object-oriented languages that must be addressed to achieve a satisfactory integration of concurrency in the object-oriented framework. We consider the approaches followed by object-ori...

Testing is one of the important and indispensable activities of software development life cycle. Software testing makes sure that the developed software satisfies all the customer requirements and executes without error. More researches in the field of software testing are carried out in academic as well as in industry so as to improve the testing process. As there is a major shift in the softw...

The design and implementation of intelligent tutoring systems is mainly oriented towards scientific goals. Implementation is viewed as a methodology for research and systems are considered as its byproduct. However, this contribution shows that the theoretical grounds of our discipline do not restrict its applicability to theoretical advances. They respond instead to the trainer's concern about...

Action Semantics is a framework for the formal specification of programming languages. Two different, recently proposed approaches provide modularity to the framework, allowing for specification reusability and extension. In this work, we analyze the previous approaches, and introduce Object-Oriented Action Semantics, a new form of modular organization of Action Semantics descriptions. Object-o...

An object-oriented database model can support features such as abstract data types, methods, encapsulation, subtyping (or inheritance), complex structures, and object identity. The processing of queries in such a model also entails support for these features. Query optimization will require new techniques for supporting the object-oriented features. Although many of the problems that must be so...

Service-oriented systems engineering (SoSE) counts its two-decade history. Nowadays it is a way of developing and deploying applications as well as the whole enterprise systems. Service-oriented requirements engineering (SoRE) as an integral part of SoSE and as a new requirements engineering subdiscipline faces a number of different kinds of challenges. The early SoRE approaches were derived fr...

Object-oriented (OO) technology has been heralded as a solution to the problems of software engineering. The claims are that OO technology promotes understandability, extensibility, evolvability, reusability, and maintainability of systems, and that OO systems are easy to understand and use. However, this technology has not been as successful as expected. An analysis of experiences and empirica...