Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1999-07-22
Physics
Condensed Matter
Disordered Systems and Neural Networks
7 pages, including 2 figures
Scientific paper
10.1088/0305-4470/32/50/101
We investigate zero temperature Gibbs learning for two classes of unrealizable rules which play an important role in practical applications of multilayer neural networks with differentiable activation functions: classification problems and noisy regression problems. Considering one step of replica symmetry breaking, we surprisingly find that for sufficiently large training sets the stable state is replica symmetric even though the target rule is unrealizable. Further, the classification problem is shown to be formally equivalent to the noisy regression problem.
Ahr Martin
Biehl Michael
Urbanczik Robert
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