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University of Tokyo Baba Lab
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The lab researches technology in which humans and AI collaborate to support better decision-making.
AboutAbout the lab
Humans and AI, deciding together
The Baba Lab studies technology for "human-AI collaboration."
Focusing on individual and group decision-making, the lab builds technology that enables AI to provide appropriate support to humans.
The lab develops methods for aggregating opinions that take the diversity of values into account, as well as apps that support discussions everyone can agree on.
It also works on research that incorporates human knowledge into machine learning, and on mechanisms that ask humans to answer questions AI cannot.
Key terms
- HCI
- Human-computer interaction. A research field that aims to make interaction between people and computers easier to use.
- Large language model
- AI that learns from large amounts of text and can understand and generate text. Also called an LLM.
- Human Computation
- A mechanism in which questions that AI cannot answer are divided up and given to many people to answer, and their answers are then collected and used.
- Majority voting
- A way of making a decision by choosing the answer given by the most people among multiple answers. It is often used to increase the reliability of answers.
ResearchResearch themes
The lab studies technology for "human-AI collaboration." Focusing on individual and group decision-making, it researches AI and HCI technologies that enable AI to provide appropriate support to humans.
*Illustrative imageSupporting Decision-Making That Accounts for Diversity
The lab develops opinion aggregation methods that take the diversity of values into account, as well as an app that uses large language models to automatically classify opinions and support discussions everyone can agree on. It also builds AI that teaches humans how to make fair judgments.
*Illustrative imageBetter Interaction Between Humans and AI
To help people who find it hard to put their ideas into words, the lab develops technology that generates images matching a user's preferences using only swipe gestures. It also studies how the way AI explanations are phrased affects human decision-making.
*Illustrative imageMachine Learning with Humans in the Loop
This research incorporates human knowledge into machine learning. The lab develops methods that use humans for feature extraction, techniques that incorporate humans into GANs, and technology that improves the classification accuracy of large language models with only a small amount of human feedback.
*Illustrative imageSmarter Majority Voting and Human Computation
Majority voting does not work well for difficult questions that most people get wrong. The lab researches smarter majority voting, which identifies reliable people, and methods for estimating the reliability of evaluations.
MembersFaculty
The Baba Lab's members consist of faculty, doctoral and undergraduate students, academic specialist staff, and students who collaborate on research.As of 2026
- Associate ProfessorYukino BabaPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “PVC Brainstorming Workshop ( )” BLM Nevada / Public domain (cropped)
- Supporting Decision-Making That Accounts for Diversity: “Young people working in groups at tables 2022” Halynamelnychuk / CC BY-SA 4.0 (cropped)
- Better Interaction Between Humans and AI: “Smartphone Use” Océanos y dados / CC0 (cropped)
- Machine Learning with Humans in the Loop: “Artificial Neural Network with Chip” mikemacmarketing / photo on flickr / CC BY 2.0 (cropped)
- Smarter Majority Voting and Human Computation: “Show of hands” European People's Party / CC BY 2.0 (cropped)
- Related lab (Kanai Lab): “CSIRO ScienceImage 11431 Computer model image of a rogue wave smashing into a semisubmersible platform weighing around 32000 tonnes” division, CSIRO / CC BY 3.0 (cropped)
- Related lab (Kaneko Lab): “Go (13×” Dietmar Rabich / CC BY-SA 4.0 (cropped)
- Related lab (Hiraki Lab): “Babies with soft books” https://pixabay.com/en/users/ / / CC0 (cropped)
- Related lab (Fukunaga Lab): “Schachfiguren” Dietmar Rabich / CC BY-SA 4.0 (cropped)
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