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Hi tech giggles: Robots taught to laugh at jokes

Researchers at a Japanese university are using artificial intelligence to teach robots about appropriate laughter, from giggling to guffaws.

 

Sep 15, 2022, updated Sep 15, 2022

The work, at Kyoto University in Japan, uses artificial intelligence (AI) to train robots about appropriate laughter – and to differentiate between chuckles and rip-roaring squeals.

Writing in the journal Frontiers in Robotics and AI, they describe working with a robot called Erica with the hope of making conversations more natural.

“One of the important functions of conversational AI is empathy,” lead author Dr Koji Inoue, an assistant professor at Kyoto University in the Department of Intelligence Science and Technology, said.

“Conversation is, of course, multimodal, not just responding correctly. So we decided that one way a robot can empathise with users is to share their laughter, which you cannot do with a text-based chatbot.”

Creating a “shared laughter” model, the researchers used AI to help detect laughter, decide whether to laugh and also what kind of laughter would be best.

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Four short two- to three-minute dialogues between real people and Erica were used to test the system, which performed well.

However, the experts said there is more work to do to create truly natural laughter situations.

“Robots should actually have a distinct character, and we think that they can show this through their conversational behaviours, such as laughing, eye gaze, gestures and speaking style,” Inoue said.

“We do not think this is an easy problem at all, and it may well take more than 10 to 20 years before we can finally have a casual chat with a robot like we would with a friend.”

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