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Inexact restoration via random models for unconstrained noisy optimization

We study the Inexact Restoration framework with random models for minimizing functions whose evaluation is subject to errors. We propose a constrained formulation that includes well-known stochastic problems and an algorithm applicable when the evaluation of both the function and its gradient is random and a speci ed accuracy of such evaluations is guaranteed with su ciently high probability. The proposed algorithm combines the Inexact Restoration framework with a trust-region methodolo...

A Variable Dimension Sketching Strategy for Nonlinear Least-Squares

We present a stochastic inexact Gauss-Newton method for the solution of nonlinear least-squares. To reduce the computational cost with respect to the classical method, at each iteration the proposed algorithm approximately minimizes the local model on a random subspace. The dimension of the subspace varies along the iterations, and two strategies are considered for its update: the first is based solely on the Armijo condition, the latter is based on information from the true Gauss-Newton mode...

The OECD report on the evaluation of the national tobacco control programme in France

In France, tobacco smoking caused 13% of all deaths in 2015 and its consumption is one of the main causes of non-communicable diseases. Therefore, France implemented a significant tobacco control programme from 2016 to 2020, including a 41% increase in taxation of tobacco products, the implementation of plain packages for cigarettes, the full refund of nicotine substitutes and the smoking cessation campaign called #Mois-SansTabac. This programme had a positive effect reducing smoking prevalen...

L’annuncio (si spera prematuro) del tramonto del diritto internazionale

Riflessione sulle pressioni cui sono sottoposte le norme del diritto internazionale sull'uso della forza armata, e su una presunta crisi del diritto internazionale, a causa dei comportamenti unilaterali e "di rottura" da parte di alcune grandi potenze./Reflection on the pressures faced by international law norms regarding the use of armed force, and on an alleged crisis of international law, due to unilateral and "disruptive" actions by certain major powers.

Pressure-strain interaction in plasma turbulence: Contribution of the ion non-gyrotropy

Aims. We investigated the properties of plasma turbulence at ion scales in the context of the solar wind. We concentrated on the pressure-strain coupling between the kinetic and magnetic energy and the internal energy; we analysed its capability to produce an effectively irreversible transfer towards the internal energy. Methods. We studied results from a three-dimensional hybrid simulation of decaying turbulence when protons exhibit a substantial temperature anisotropy. We analysed the time ...

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Inexact restoration via random models for unconstrained noisy optimization

A Variable Dimension Sketching Strategy for Nonlinear Least-Squares

The OECD report on the evaluation of the national tobacco control programme in France

L’annuncio (si spera prematuro) del tramonto del diritto internazionale

Pressure-strain interaction in plasma turbulence: Contribution of the ion non-gyrotropy

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