This paper considers the estimates of parameters stochastic autoregressive exogenous input (ARX) systems with quantized data. The error caused by data brings difficulties to parameter estimation ARX systems. Therefore, I start boundedness and design size thanks good properties least squares. Then influences noise system itself bounded on are analyzed, respectively. inputs designed make satisfy ...

This article is concerned with the identification of autoregressive models exogenous inputs (ARX). Most existing approaches like prediction error minimization and state-space framework are widely accepted utilized to estimate ARX but known deliver unbiased consistent parameter estimates for a correctly supplied guess input-output orders delay. In this paper, we propose novel automated spectral ...

A comparative analysis of different models of a Magneto-Rheological (MR) damper was done. Three models were tested: a non-linear ARX, a semi-phenomenological and a phenomenological. Although the non-linear ARX model shown the best result, this is a black-box model with limited use. However, the Semi-Phenomenological model represented an excellent option considering the physical meaning of its p...

In recent years, encrypted databases have emerged as a promising direction that provides data confidentiality without sacrificing functionality: queries are executed on encrypted data. However, existing practical proposals rely on a set of weak encryption schemes that have been shown to leak sensitive data. In this paper, we propose Arx, a practical and functionally rich database system that en...

Impossible differential attack is one of powerful methods for analyzing block ciphers. When designing block ciphers, it must be safe for impossible differential attacks. In case of impossible differential attack, the attack starts from finding the impossible differential characteristic. However, in the case of the ARX-based block cipher, these analyzes were difficult due to the addition of modu...

At CRYPTO’22, Ranea, Vandersmissen, and Preneel proposed a new way to design white-box implementations of ARX-based ciphers using so-called implicit functions quadratic-affine encodings. They suggest the Speck block-cipher as an example target.In this work, we describe practical attacks on construction. For implementation without one external encodings, simple algebraic key recovery attack. If ...

The robust recursive identification method of ARX models is proposed using the beta divergence. parameter update law suppresses effect outliers a weight function that automatically determined by minimizing A numerical example illustrates efficacy method.