Informe sobre los retratos de Cristóbal Colón : su trage [sic] y escudo de armas

Tít. en cabecera de texto "Memorias de la Real Academis de la Historia"Según Palau impreso en Madrid en el año 1851Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-201

Second-order Conditional Gradient Sliding

Constrained second-order convex optimization algorithms are the method of choice when a high accuracy solution to a problem is needed, due to their local quadratic convergence. These algorithms require the solution of a constrained quadratic subproblem at every iteration. We present the \emph{Second-Order Conditional Gradient Sliding} (SOCGS) algorithm, which uses a projection-free algorithm to solve the constrained quadratic subproblems inexactly. When the feasible region is a polytope the algorithm converges quadratically in primal gap after a finite number of linearly convergent iterations. Once in the quadratic regime the SOCGS algorithm requires $\mathcal{O}(\log(\log 1/\varepsilon))$ first-order and Hessian oracle calls and $\mathcal{O}(\log (1/\varepsilon) \log(\log1/\varepsilon))$ linear minimization oracle calls to achieve an $\varepsilon$-optimal solution. This algorithm is useful when the feasible region can only be accessed efficiently through a linear optimization oracle, and computing first-order information of the function, although possible, is costly

Scalable Frank-Wolfe on Generalized Self-concordant Functions via Simple Steps

Generalized self-concordance is a key property present in the objective function of many important learning problems. We establish the convergence rate of a simple Frank-Wolfe variant that uses the open-loop step size strategy $\gamma_t = 2/(t+2)$, obtaining a $\mathcal{O}(1/t)$ convergence rate for this class of functions in terms of primal gap and Frank-Wolfe gap, where $t$ is the iteration count. This avoids the use of second-order information or the need to estimate local smoothness parameters of previous work. We also show improved convergence rates for various common cases, e.g., when the feasible region under consideration is uniformly convex or polyhedral

Pedagogía práctica : curso completo de lecciones y ejercicios para las escuelas

Copia digital. España : Ministerio de Cultura. Subdirección General de Coordinación Bibliotecaria, d2024Rústica, deteriorada.Registro de la Propiedad Intelectual: Ley de 1847: 15604; n. de solicitud de ingreso: "7212"; fecha y datos de ingreso: "25 Mayo 74" "18 Abril 76, "Regº fº 445 lib. 26"; firma del depositante: "Mariano Cardedera

Principios de educacion y métodos de enseñanza

En port.: "Libro de texto para las escuelas normales"Copia digital. España : Ministerio de Cultura. Subdirección General de Coordinación Bibliotecaria, d2024Rústica, deteriorada.Registro de la Propiedad Intelectual: Ley de 1847: 9217; n. de solicitud de ingreso: "1906"; firma del depositante: "Mariano Carderera