Putting myself in an environment where automated driving vehicles are tested on public roads.

When I joined the company in 2007, Toyota Central R&D Labs., Inc. was also researching driving safety systems, and I conducted related research with a relatively easy to picture end point. Recently, I am striving to build things that go beyond themes with a predetermined end point. In social systems research, for example, I was involved in the research and development of decision-making support systems that leverage collective intelligence, while in research related to mobility, I participated in research on automated driving at TRINA, the Toyota Motor Corporation research base in North America.
At TRINA, experiments involving automated driving vehicles making test drives on local highways amid ordinary vehicle traffic are carried out daily as a matter of course. This allowed me to experience a situation in which I had direct contact with research outcome on an everyday basis, ascertained subsequent issues, and had to accept the opinions of society at large.
Automated driving actually has various levels. My own work was to develop functions to determine the appropriate merging point and speed based on the behavior of nearby vehicles when merging onto a crowded highway. I worked on developing methods to learn how to judge time and distance, which is easily done by people, from data. Since coming back to Japan, I have continued to research machine learning algorithms capable of making decisions in situations that change from moment to moment.

Pouring the passion for machine learning held since I was a student into introducing automated driving.

Robots have already found their way in various parts of our day-to-day lives. They have, for example, been used in assembly plants for a long time. However, such robots can only perform predetermined tasks in a specifically designed environment. In contrast, since I was in university, I have been researching robots capable of learning autonomous behavior in complex environments such as playing soccer.
In the context of playing soccer, every game involves changes such as the participation of different players or newly constructed turf for the pitch. The ability to learn is essential to performing a variety of tasks in such an environment. I have wondered which segment of society will be the first to have commercialized robots with superior learning ability. My own conclusion is that it will be automated driving. I joined Toyota Central R&D Labs., Inc. because I believed I could leverage the research I did in university here.
Upon joining, I first spent two years researching and developing algorithms to detect alcohol intake, which was followed by two years of being involved in the research and development of methods to detect drowsy driving. I have applied the research themes from my student days to find my own answers to the themes derived from the needs of society or Group companies.

Our research environment allows working on both fundamentals and practical applications.

Venture businesses are common in the United States, and it is not uncommon to see university professors launch a business based on technology they presented at a conference, and then commercialize it a year later. My experience in that country, where outcomes are promptly turned into products and disseminated, has strongly changed my awareness of how to give research outcomes back to society.
Looking at Toyota Central R&D Labs., Inc. through fresh eyes, some research is close to creating a product, while other research is in a phase aimed at achieving an academic impact. This shows that the company offers an environment that allows for any phase of research. I you want to do both, you have the opportunity to do so, and if you want to pursue academic research, you can do that as well.
In current automated driving, minor differences in factors such as available information and scale or tolerance for failure create situations that make it difficult to learn to make appropriate decisions, and algorithms to learn decision-making at the commercial product level have yet to be established. I will capitalize on the fact that Toyota Central R&D Labs., Inc. employs researchers from different fields and provides an environment where we can benefit from opinions reflecting the perspectives of diverse disciplines as I try to determine my next move.

Typical Day

In the morning, I come to work after taking my two-and-a-half year old to nursery school. With core work time starting at ten o’clock and everyone coming in at different times, short discussions naturally take place in the afternoon. The paper reading session at 5 P.M. is a meeting for researchers to introduce new papers or technology from any field to one another. It is an excellent opportunity to come in contact with perspectives from other fields.

*Details in the article are those at the time of the interview.