Blatantly Obvious, which we explored in a number of cases. It can be one input into may vectors, it may tell only a very minor part of the story, or none at all. It can lead to categorizing useful behavior for kinds of goals. We worked with various approaches like 'expression glasses' to work with varying context understanding. Including chatbot interactions. Note also the whole large amount of work in understanding 'neural' activity.
Facial expressions don't tell the whole story of emotion
by Laura Arenschield, The Ohio State University
Interacting with other people is almost always a game of reading cues and volleying back. We think a smile conveys happiness, so we offer a smile in return. We think a frown shows sadness, and maybe we attempt to cheer that person up.
Some businesses are even working on technology to determine customer satisfaction through facial expressions.
But facial expressions might not be reliable indicators of emotion, research indicates. In fact, it might be more accurate to say we should never trust a person's face, new research suggests.
"The question we really asked is: 'Can we truly detect emotion from facial articulations?'" said Aleix Martinez, a professor of electrical and computer engineering at The Ohio State University. ... "
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