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A Canonical Piecewise-Linear Representation Theorem: Geometrical Structures Determine Representation Capability

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2 Author(s)
Chengtao Wen ; Carnegie Mellon University, Pittsburgh, PA, USA ; Xiaoyan Ma

This brief proposes a general piecewise-linear (GPWL) representation theorem based on geometrical structure analysis of continuous PWL functions. A constructive algorithm is developed to represent a continuous PWL function with the weighted sum of GPWL basis functions. The GPWL basis functions are defined over a domain partition with pairwise directly adjacent regions. The GPWL representation theorem unifies many known PWL models into a common theoretical framework. The GPWL representation is promising to find applications in nonlinear circuit synthesis, dynamic system identification, and control.

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IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:58 ,  Issue: 12 )