This paper focuses on the role of emotion and expressive behavior in regulating social interaction between humans and expressive anthropomorphic robots, either in communicative or teaching scenarios. We present the scientific basis underlying our humanoid robot's emotion models and expressive behavior, and then show how these scientific viewpoints have been adapted to the current implementation. Our robot is also able to recognize affective intent through tone of voice, the implementation of which is inspired by the scientific findings of the developmental psycholinguistics community. We first evaluate the robot's expressive displays in isolation. Next, we evaluate the robot's overall emotive behavior (i.e. the coordination of the affective recognition system, the emotion and motivation systems, and the expression system) as it socially engages nave human subjects face-to-face.

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Recent studies into Web retrieval have shown that word sense disambiguation can increase retrieval effectiveness. However, it remains unclear as to the minimum disambiguation accuracy required and the granularity with which one must define word sense in order to maximize these benefits. This study answers these questions using a simulation of the effects of ambiguity on information retrieval. It goes beyond previous studies by differentiating between homonymy and polysemy. Results show that retrieval is more sensitive to polysemy than homonymy and that, when resolving polysemy, accuracy as low as 55 % can potentially lead to increased performance. 1

XGEN is a program that accepts a machine description and produces a good local code generator for an ALGOL-like language. It is organized as a production system of rules codifying previ-ously acquired human skills for dealing with computer architecture and programming ~anguages. The proliferation of machines and programming lan-guages motivates automatic generation of compilers. Automatic generation of some compiler modules is already available; for example, parsers may be

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During this project we have created the mobile game ‘Snatch – Bandit and the Baby’ using J2ME and researched the area of immersion in games. In order of creating an immersive game experience, different factors have influence. By studying some different game gurus and their game theory, we found that subjects like freedom in games, realism and related issues like content authoring, artificial intelligence and physics are some of the areas with great influence in immersive games nowadays. We have used this knowledge when developing our own mobile game ‘Snatch – Bandit and the Baby’. We have attempted as much as possible to incorporate immersive aspects during the development of the game, but it turned out to be quite difficult when working in such limited conditions as on a mobile device. Nevertheless the result of our game is very satisfying. Throughout the rest of the report we document our study of immersion in games and our considerations concerning the mobile game.