Interdisciplinary StudiesPNAS
A unified neural representation model for spatial and conceptual computations
T. Haga, Y. Oseki, et al.
The hippocampus and entorhinal cortex encode spaces via place and grid cells and also represent semantic concepts. This study reveals a mathematical link between a spatial navigation value function and an information measure for word embeddings, and introduces “disentangled successor information” (DSI), which produces place/grid-like spatial representations and concept-like word representations and enables common arithmetic-based inferences across spaces and words. Research conducted by Tatsuya Haga, Yohei Oseki, and Tomoki Fukai.
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