Inversion in Time

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Inversion in Time
Inversionof multilayersynchronous networks is a method which tries to answer questions like What kind of input will give a desired output?" or Is it possible to get a desired output under special input output constraints?". We will describe two methods of inverting a connectionist network. Firstly, we extend inversion via backpropagation Linden Kindermann 4 , Williams 11 to recurrent Elman 1 , Jordan 3 , Mozer 5 , Williams Zipser 10 , time-delayed Waibel at al. 9 and discrete versions of continuous networks Pineda 7 , Pearlmutter 6 . The result of inversion is an input vector. The corresponding output vector is equal to the target vector except a small remainder. The knowledge of those attractors may help to understand the function and the generalization qualities of connectionist systems of this kind. Secondly, we introduce a new inversion method for proving the non-existence of an input combination under special constraints, e.g. in a subspace of the input space. This met...
Sebastian Thrun, Alexander Linden
Added 11 Aug 2010
Updated 11 Aug 2010
Type Conference
Year 1990
Authors Sebastian Thrun, Alexander Linden
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