Kazuhisa Taniguchi – författare

Economics went through great development in the 20th century. This development, which was based mainly on mathematical methods, is not an appropriate method of analyzing markets that change every hour and every day. In a stock market, prices constantly change depending on speculation. U-Mart, a manmade market, has been proposed in order to study such instantly moving markets. Although the U-Mart system is internationally acclaimed for being at the forefront of market research, its use is by no means limited to a small number of researchers on the fringe. The whole system, including its source code, is open and is distributed without charge, testifying to a philosophy of creating and providing a common test bed for research into financial markets.

This book takes up unique agent-based approaches to solving problems related to stock and their derivative markets. Toward this end, the authors have worked for more than 15 years on the development of an artificial market simulator called U-Mart for use as a research and educational tool. A noteworthy feature of the U-Mart simulator compared to other artificial market simulators is that U-Mart is an ultra-realistic artificial stock and their derivative market simulator. For example, it can simulate “arrowhead,” a next-generation trading system used in the Tokyo Stock Exchange and other major markets, as it takes into consideration the institutional design of the entire market. Another interesting feature of the U-Mart simulator is that it permits both human and computer programs to participate simultaneously as traders in the artificial market. In this book, first the details of U-Mart are explained, enabling readers to install and run the simulator on their computers for research andeducational purposes. The simulator thus can be used for gaming simulation of the artificial market and even for users as agents to implement their own trading strategies for agent-based simulation (ABS).The book also presents selected research cases using the U-Mart simulator. Here, topics include automated acquisition of trading strategy using artificial intelligence techniques, evaluation of a market maker system to treat thin markets such as those for small and regional businesses, systemic risk analysis of the financial market considering institutional design of the market, and analysis of how humans behave and learn in gaming simulation. New perspectives on artificial market research are provided, and the power, potential, and challenge of ABS are discussed. As explained in this important work, ABS is considered to be an effective tool as the third approach of social science, an alternative to traditional literary and mathematical approaches.

This book provides for the first time the microfoundations of evolutionary economics, enabling the reader to grasp a new framework for economic analysis that is compatible with evolutionary processes. Any independent approach to economics must include a value theory (or price theory) and price and quantity adjustment processes. Evolutionary economics has rightly and successfully concentrated its efforts on explaining evolutionary processes in technology and institutions. However, it does not have its own value theory and is not capable of explaining the workings of everyday economics processes, in which any evolutionary process would take place.Our point of departure is the addition of myopic agents with severely limited rational and forecasting capacities (in stark contrast to mainstream economics). We show how myopic agents, in a complex world, can produce a stable price system and demonstrate how they can adjust their production to changing demand flows. Agents behave without any knowledge of the overall process, and they generate a stable economy as large as the global network of exchanges. This is the true “miracle” of the market mechanism. In contrast to mainstream general equilibrium theory, this miracle can be explained without the need for an auctioneer or infinitely rational agents. Thanks to this book, evolutionary economics can now claim to be an independent approach to economics that can completely replace mainstream neoclassical economics.