Is there opponency between orientation-selective processes in pattern perception, analogous to opponency between color mechanisms? Here we concentrate on possible opponency in second-order channels. We compare several possible second-order structures: SIGN-opponent-only channels in which there is no opponency between orientations (also called complex channels or filter-rectify-filter mechanisms...

In this paper, with help of the concept of hyper-rationality, we model the interaction between two investment companies by an important game as trickery game that has special equilibrium which called hyper-equilibrium. In trickery game, one company can choose cooperation with another company until the last moment and finally changes his action to non-cooperation which incur more loss to an oppo...

Research in opponent modelling has shown success, but a fundamental question has been overlooked: what happens when a modeller is faced with an opponent that cannot be successfully modelled? Many opponent modellers could do arbitrarily poorly against such an opponent. In this paper, we aim to augment opponent modelling techniques with a method that enables models to be used safely. We introduce...

Why we feel uneasy in communication against artificial agent? Previous research suggested that frequent changes of depth of reasoning to opponent generate rich communication between humans. The deepest reasoning was inference of own mental model based on opponent model. This research indicates that lack of depth of reasoning made human-agent interaction difficult. We defined the inference of ow...

The goal of this dissertation is to propose a high level generic architecture for the development of agents able to effectively play games with strong social components and a mix of competition and cooperation. Traditional techniques used in the context of games include a combination of heuristics and searching strategies like minimax, Branch & Bound as well as Monte-Carlo approaches; however, ...

This research is about a small village school participating in an inter-institutional electronic network of schools using information and communication technologies in the context of the Kilpisjärvi project 1994 to 1997. The project concerned the establishment of the lower secondary school in the Kilpisjärvi village. The school was linked with a network which also included the Teacher Training ...

In this paper, we propose a new pre-processing method for detecting road traffic sign based on visual saliency map model. Since the road traffic sign boards have dominent color contrast against environment, we consider the color opponents information with center surround difference normalization as an input feature extraction, which is effective to reduce noise influence as well as intensify th...

This paper introduces a new color model, RBW, which can be used as an intuitive user-interface for selecting colors in computer graphics systems. It is based on the red-green, blue-yellow, and white-black color axes. These axes are similar to the axes in opponent color theory, but their semantics are different: in the RBW model, the white-black axis mixes white or black into the color rather th...