Tomomi Kito

Modeling Biological Manufacturing Systems with Bounded-Rational Agents

This paper presents bounded rationality as a characteristic of agents to develop their behavior in Biological Manufacturing Systems (BMS) that can deal with the complexity of the manufacturing environment using the ideas of self-organization, evolution and learning. Clarifying the definition and description of bounded rationality, the approach is implemented in an Ant System model. The purpose of the model is to handle the uncertainty in the perception, action and inner structure of agents by introducing bounded rationality in their characteristics. Computer simulation demonstrates the effectiveness of the approach by indicating significant improvement in the performance of the modeled BMS.

Smooth path planning by using visibility graph-like method

To achieve smooth motion of car-like robots, it is necessary to generate paths that satisfy the following conditions: maximum curvature, maximum curvature derivative, and curvature continuity. Another requirement is that human operators can manipulate the robots with ease. In this paper, a path expression methodology consisting of line segments, circular arcs and clothoid arcs is presented. In addition, a method of global path generation with a visibility graph is proposed. To establish this method, the following steps are proposed: (a) the arrangement of subgoals (middle points) and (b) the construction of the graph for path generation. By using the proposed method, the paths were shortened 14% on average.

Design of an artificial mark to determine 3D pose by monocular vision

The design for an artificial mark attached to small objects is presented in this paper. Three conditions are required for the design of the marks: (1) short calculation time, (2) easy attachment, and (3) individual calculation for each item. The marks are obtained by using three different extraction methods. The experiments determine the best mark. The mark using the method that extract colors and calculated the gravity has good results. We analyze the errors of the mark that has best experiment. The appropriateness of the experimental results is then confirmed. We have the experiment that the manipulator handles the objects with the best mark. The experiment is successful. Therefore, the usability of the mark is verified.

Multi-Agent Market Modeling Based on Analysis of Consumer Lifestyles

This paper describes the multi-agent modeling of a service market which consists of a service provider and various types of consumers. The difficulty in determining, and thus reacting to, the needs of markets, lies in the fact that consumers have diverse value concepts, which can differ through interaction with others. This study conducts a questionnaire on consumer lifestyles, and constructs models for the several types of consumers, based on the survey results. It also clarifies characteristics of a service market. The multi-agent simulations of this service market are executed to verify the validity of the proposed model.

Introducing Bounded Rationality into Self-Organization-Based Semiconductor Manufacturing

This study proposes a design approach for self-organization-based systems by introducing bounded-rational agents. The validity of the proposed model of bounded rationality is validated in comparison to the proposal of information localization, using a simulation of self-organization-based semiconductor manufacturing, which is a typical complex system. The effectiveness of the proposal is demonstrated also under changing situations.

Decision making in artifactual systems with bounded rationality

This study examines a co-creative decision-making method of artifactual systems for creating effective solutions under incomplete conditions by introducing bounded rationality as a characteristic of agents.