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472 IEEE TRANSACTIONS ON COMPUTERS, VOL. 47, NO. 4, APRIL 1998 Brief Contributions
 

Summary: 472 IEEE TRANSACTIONS ON COMPUTERS, VOL. 47, NO. 4, APRIL 1998
Brief Contributions
Accuracy vs. Precision in Digital VLSI
Architectures for Signal Processing
Cesare Alippi, Member, IEEE,
and Luciano Briozzo, Member, IEEE
Abstract--The paper provides a sensitivity analysis to measure the
loss in accuracy induced by perturbations affecting acyclic
computational flows composed of linear convolutions and nonlinear
functions. We do not assume a large number of coefficients or input
independence for the convolution module, nor strict requirements on
the nonlinear function. The analysis is tailored to digital VLSI
implementations where perturbations, associated with data
quantization, affect the device inputs, coefficients, internal values, and
outputs. The sensitivity analysis can be used to measure the loss in
accuracy along the computational chain, to characterize the tolerated
perturbations, and to dimension the whole architecture.
Index Terms--Finite precision representation, neural networks, NSR,
sensitivity analysis.
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Source: Alippi, Cesare - Dipartimento di Elettronica e Informazione, Politecnico di Milano

 

Collections: Computer Technologies and Information Sciences