Tatsuya Amano

Urban Transportation Simulation by LLM Powered Agents

Researcher

Tatsuya Amano

Outline

In this research project, I leverage large language models (LLMs) to express each agent in urban transportation simulation. Each agent’s behavior and internal state are represented as natural language dialogues. I convert real-world data—such as people’s movements, actions, and intentions—into linguistic formats. By training the LLMs with this data, I aim to replicate human decision-making and movement patterns in transportation using a diverse range of data sources.

Hiroyuki Usui

GeoAI-based mutual interaction model between multi-scale residential environment and individuals’ behavior changes for improving buildings

Researcher

Hiroyuki Usui

Outline

Sustainable cities and communities are one of the major SDG’s goals. The aim of this research is to understand (1) how a series of policies for sustainable cities and communities promotes actions for improving each building and street space by individuals and communities (hereafter called ‘behavior change’) and (2) how these actions change multi-scale residential environment focusing on mutual interaction between multi-scale residential environment (e.g. safety (disaster), sanitary, amenity (streetscapes) and cultural and social sustainability) and multi-scale individuals’ behavior changes for improving building performance based on GeoAI simulation considering patterns of building locations explicitly. To this end, a series of methods for measuring multi-scale residential environment in complex physical urban space and modeling individuals’ behavior changes is developed.

Yo Ehara

Fundamental Technology for Transforming Educational Systems through the Simulation of Learners’ Thought Processes on Large Language Models

Researcher

Yo Ehara

Outline

Providing appropriate guidance to learners, also called “scaffolding” in pedagogical terms, requires considering not only the amount of their knowledge and reasoning ability but also their varying areas of comprehension through the simulation of the thought processes of each individual learner. This research aims to study and develop AI technology based on large language models that can be applied in educational institutions to provide individually adaptable and suitable advice to students. This technology maps the internal state of the AI to pedagogical concepts so that school teachers can understand the AI’s assessment of individual learners, exploring the new academic field called computational education. Furthermore, it realizes AI-based infrastructure to reduce the workload of teachers, enabling collaboration between AI and educators.

So Kubota

A field experiment on the connection between night sleep and daytime activities

Researcher

So Kubota

Outline

In our high-stress society, people pay attention to improving sleep. My research aims to explore the channel through which improved nighttime sleep leads to behavioral changes in the daytime and ultimately advances society as a whole. Field experiments with digital devices and smartphone apps capture various medical and behavioral changes. These individual-level results are incorporated into an integrated medical, social, and economic simulation model to examine the macro-level social transformation.

Makoto Kuroki

Research and Development of Social Implementation Process Methodology for Public Policy Application of Social Simulation: A Survey-based Experiment Approach

Researcher

Makoto Kuroki

Outline

This project explores modeling methods for the adoption of social simulation by using nudges and other methodologies that promote behavioral change, a survey will be constructed based on a design that focuses on the presence of predictive information, noise level, and message framing in a social simulation and divided into five categories with 1 + 2 x 2 treatments. After conducting interviews and an online survey experiment, a field-based survey experiment will be conducted to contribute to the promotion and diffusion of social implementation process.

Mamoru Komachi

Employing natural language processing to predict the future for decision making

Researcher

Mamoru Komachi

Outline

In this study, we present a novel language model that takes into account changes over time to tackle future prediction tasks. We construct an open dataset that comes with value judgment labels based on insights derived from social sciences. This approach not only allows for the broad verification of the language model by the wider community but also encourages its improvement by individuals from various fields. Furthermore, by clearly presenting the rationale and reliability behind the predictions generated by this model, we increase its acceptability and trust among potential users. The language model crafted through this research project will support and facilitate the interactive and dynamic processes involved in evidence-based policy formulation and critical decision-making.

Masanori Takano

Designing Metaverse Experiences to Improve the Problems People Face

Researcher

Masanori Takano

Outline

We conduct survey research and intervention experiments in the metaverse, revealing the effects of interventions on individual problems and changes in social networks. By intervening in the user experience of the metaverse, we aim to promote changes in social behavior in both the metaverse and the real world, and to deepen and expand the user’s social network in both societies. Based on these findings, we construct a two-layer social network model of the metaverse and reality, and evaluate the long-term and global effects of interventions.

Shunya Noda

Market Design for Complex Environments

Researcher

Shunya Noda

Outline

Market design is an innovative and interdisciplinary academic field aimed at scientifically and technologically informed institutional arrangements. However, its primary reliance on analytical approaches has limited its capacity to optimize system designs in complex environments. This research employs deep reinforcement learning techniques to approximate agents’ value functions, thereby enabling the formulation of optimal policies for critical issues previously considered intractable. Potential applications include kidney exchange and vaccine distribution.

Teruaki Hayashi

Trust-building from Mutual Distrust in a Data Distribution Society

Researcher

Teruaki Hayashi

Outline

The utilization of data across fields is attracting attention as a new source of innovation. However, clarifying the process by which trust is fostered from a situation of mutual distrust to data transactions is an important issue in the coming data distribution society. This project will contribute to the creation of a new data society infrastructure by elucidating the emergent effects of complex data distribution and transactions under conditions of uncertain trust, constructing a data distribution and transaction mechanism, and implementing a data distribution simulation.

Tsubasa Minematsu

Learning system with copy learner models for the learner’s performance prediction and learning by teaching

Researcher

Tsubasa Minematsu

Outline

In this project, a simulation method for predicting the learner’s performance, a learning content generation method based on the learning simulation, and a learning environment for learning by teaching with the learner’s copy model are developed to support the learner automatically. The core technology is a copy learner model, which imitates the learners’ sentence generation process using a large-scale language model and is used for understanding detailed learning status. Based on the copy learner model, the learning system developed in this project integrates learning assessment, learning content generation, and a peer learning environment to automate the loop with the assessments, the content generation, and the support.

Hiroaki Yamada

Simulating legal argumentation with multi agents reflecting norms and values

Researcher

Hiroaki Yamada

Outline

This project is to develop a multi-agent legal argumentation simulation where three different agents of plaintiff, defendant, and judge participate. While the previous study of legal judgment prediction requires factual allegations and claims from parties as given inputs, this framework aims to generate intermediate argumentations and interactions between the parties to make the simulation more precise. Moreover, this project explores methods that enable agents to reflect points of view from different parties and methods that makes agent acquire laws and norms that can be different from country to country.

Hiroaki Yamada

Creating society-in-the-loop social simulation recreating reality

Researcher

Hiroaki Yamada

Outline

Social simulation is a tool that can generate evidences for decision-making through virtual experiments, even in situations where there is insufficient accumulation of data and knowledge. However, implementation has not progressed sufficiently due to low predictability and lack of verifiability. This project aims to solve the problem by creating a society-in-the-loop social simulation design method that incorporates data assimilation and verification by decision makers in social experiments.