In this work, we propose PolyGrad, a fully automatic method for obtaining sparse estimates of the state interactions of a non-linear state-space model via a polynomial approximation. This novel ...

Cubic and quartic functions are the natural extension of polynomials after quadratics, representing higher-order polynomials with degrees three and four respectively. Understanding these polynomials ...

In this paper, we propose a novel algorithm for nonlinear digital SIC that adaptively constructs orthonormal polynomial basis functions according to the non-stationary moments of the transmit signal.

Non-residential buildings have been broken down according to their different utilisation functions. The data are further subdivided into parts of the country, provinces, COROP areas and municipalities ...

Normality of distribution was examined for all continuous variables. If distributions were skewed, we compared results using non-corrected vs. log-transformed data, and looked for discrepancies.