Related papers: Differential Contrastive Divergence

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This paper has been withdrawn by the authors due to numerical problems to get viable results.

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This paper has been withdrawn by the author, due to the insecurity against attacks received in quant-ph/0605027v5.

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This paper has been withdrawn by the authors because the paper is largely revised and improved, and to appear in Mechanics Research Communications.

This paper has been withdrawn by the authors due to some fatal errors in the analysis.

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This paper has been withdrawn by the author due to an error.

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This paper has been withdrawn by the author, due to a significant error in section 4.3.1.