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IEICE TRANSACTIONS on Information

Knowledge Discovery from Layered Neural Networks Based on Non-negative Task Matrix Decomposition

Chihiro WATANABE, Kaoru HIRAMATSU, Kunio KASHINO

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Summary :

Interpretability has become an important issue in the machine learning field, along with the success of layered neural networks in various practical tasks. Since a trained layered neural network consists of a complex nonlinear relationship between large number of parameters, we failed to understand how they could achieve input-output mappings with a given data set. In this paper, we propose the non-negative task matrix decomposition method, which applies non-negative matrix factorization to a trained layered neural network. This enables us to decompose the inference mechanism of a trained layered neural network into multiple principal tasks of input-output mapping, and reveal the roles of hidden units in terms of their contribution to each principal task.

Publication
IEICE TRANSACTIONS on Information Vol.E103-D No.2 pp.390-397
Publication Date
2020/02/01
Publicized
2019/10/23
Online ISSN
1745-1361
DOI
10.1587/transinf.2019EDP7136
Type of Manuscript
PAPER
Category
Artificial Intelligence, Data Mining

Authors

Chihiro WATANABE
  NTT Communication Science Laboratories
Kaoru HIRAMATSU
  NTT Geospace Corporation, NEXTSITE Asakusa Building
Kunio KASHINO
  NTT Communication Science Laboratories

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