Search Results for author: Masafumi Oizumi

Found 6 papers, 0 papers with code

Decomposing Thermodynamic Dissipation of Neural Dynamics via Spatio-Temporal Oscillatory Modes

no code implementations6 Dec 2023 Daiki Sekizawa, Sosuke Ito, Masafumi Oizumi

Our decomposition enables us to calculate the contribution to the housekeeping entropy production rate from oscillatory modes, as well as the spatial distribution of the contributions.

Comparing Color Similarity Structures between Humans and LLMs via Unsupervised Alignment

no code implementations8 Aug 2023 Genji Kawakita, Ariel Zeleznikow-Johnston, Naotsugu Tsuchiya, Masafumi Oizumi

These results contribute to our understanding of the ability of LLMs to accurately infer human perception, and highlight the potential of unsupervised alignment methods to reveal detailed structural equivalence or differences that cannot be detected by simple correlation analysis.

Statistical Neurodynamics of Deep Networks: Geometry of Signal Spaces

no code implementations22 Aug 2018 Shun-ichi Amari, Ryo Karakida, Masafumi Oizumi

The manifold of input signals is embedded in a higher dimensional manifold of the next layer as a curved submanifold, provided the number of neurons is larger than that of inputs.

Fisher Information and Natural Gradient Learning of Random Deep Networks

no code implementations22 Aug 2018 Shun-ichi Amari, Ryo Karakida, Masafumi Oizumi

The natural gradient method uses the steepest descent direction in a Riemannian manifold, so it is effective in learning, avoiding plateaus.

Efficient Algorithms for Searching the Minimum Information Partition in Integrated Information Theory

no code implementations19 Dec 2017 Jun Kitazono, Ryota Kanai, Masafumi Oizumi

In this study, we empirically explore to what extent the algorithm can be applied to the non-submodular measures of $\Phi$ by evaluating the accuracy of the algorithm in simulated data and real neural data.

A general framework for investigating how far the decoding process in the brain can be simplified

no code implementations NeurIPS 2008 Masafumi Oizumi, Toshiyuki Ishii, Kazuya Ishibashi, Toshihiko Hosoya, Masato Okada

Then, we compute how much information is lost when information is decoded using the simplified models, i. e., ``mismatched decoders''.

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