In recent years ontologies – shared conceptualizations of some domain – are increasingly seen as the key to further automation of information processing. Although many approaches for representing and applying ontologies have already been devised, they haven’t found their way into enterprise applications. In this paper we argue that ontology-based systems lack critical technical features, such a...

We model the immune dynamics between T cells and cancer cells in leukemia patients after a bone-marrow (or a stem-cell) transplant. We use a system of nine delay differential equations that incorporate time delays and account for the progression of cells through different stages. This model is an extension of our earlier model [1]. We conduct a sensitivity analysis of the model parameters with ...

Understanding the business of organizations is a crucial point for developing good information systems supporting the organizations. Different generic business models have been developed based on the language action perspective. There are the models of Action Workflow (Medina-Mora et al, 1992; Denning & Medina-Mora, 1995), DEMO (Dietz, 1999) and BAT (Goldkuhl 1996; 1998). Inspired by these diff...

Free University Amsterdam, Dept. of Mathematics and Computer Science De Boelelaan 1081a, 1081 HV Amsterdam The Netherlands Email: [email protected] Abstract A number of specific aspects of (intelligent) multi-agent domains have not been considered from a conceptual modelling perspective. For example, dealing with changing worlds and simultaneously active agents the resulting interactivity and dyna...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Abstract Philosophers, linguists and others interested in problems concerning natural language frequently employ tools from logic and model theory. The question arises as to the proper interpretation of the formal methods employed—of the relations...

Solid-phase epitaxial regrowth for patterned amorphous regions has been known to form device degrading mask-edge defects. Prior studies have shown that orientation dependence of regrowth leads to pinching of the slow regrowing corners !111 fronts" that create these defects #K. L. Saenger et al., J. Appl. Phys. 101, 104908 !2007"$. Also, the effect of n-type and p-type dopants on regrowth is kno...

In this thesis, we present a computer agent for the game of no-limit Texas Hold'em Poker for two players. Poker is a partially observable, stochastic, multi-agent, sequential game. This combination of characteristics makes it a very challenging game to master for both human and computer players. We explore this problem from an opponent modeling perspective, using data mining to build a database...

Research in Information Systems has switched its focus from data to communication. The communication between different autonomous ICS’s (Information and Communication System) requires a certain amount of intelligence of each system. The system should be able to know which queries it can/may handle and also be able to negotiate about the information that it will give. In short these systems evol...

Recent work has shown that human subjects are able to predict the biomechanical ease and the cost of controlling the endpoint stability of potential reaching movements and to use these predictions to influence their choices between reaching movements. Here we review related experimental results in which human subjects made free choices between two potential reaching movements that varied in ter...

In this paper, we investigate the document categorization task with statistical language models. Our study mainly focuses on categorization of documents in agglutinative languages. Due to the productive morphology of agglutinative languages, the number of word forms encountered in naturally occurring text is very large. From the language modeling perspective, a large vocabulary results in serio...