The new, high-performing next-word prediction models belong to a class of models called deep neural networks. Martin Schrimpf, an MIT graduate student who works in CBMM, is the first author of the paper. Middleton Career Development Associate Professor of Neuroscience and a member of the McGovern Institute, are the senior authors of the study, which appears this week in the Proceedings of the National Academy of Sciences. Joshua Tenenbaum, a professor of computational cognitive science at MIT and a member of CBMM and MIT's Artificial Intelligence Laboratory (CSAIL) and Evelina Fedorenko, the Frederick A. 'It's amazing that the models fit so well, and it very indirectly suggests that maybe what the human language system is doing is predicting what's going to happen next.' Rosenblith Professor of Cognitive Neuroscience, a member of MIT's McGovern Institute for Brain Research and Center for Brains, Minds, and Machines (CBMM), and an author of the new study. 'The better the model is at predicting the next word, the more closely it fits the human brain,' says Nancy Kanwisher, the Walter A. But a new study from MIT neuroscientists suggests the underlying function of these models resembles the function of language-processing centers in the human brain.Д¬omputer models that perform well on other types of language tasks do not show this similarity to the human brain, offering evidence that the human brain may use next-word prediction to drive language processing.

Such models were designed to optimize performance for the specific function of predicting text, without attempting to mimic anything about how the human brain performs this task or understands language. These models can not only predict the word that comes next, but also perform tasks that seem to require some degree of genuine understanding, such as question answering, document summarization, and story completion.

The most recent generation of predictive language models also appears to learn something about the underlying meaning of language.

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