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We consider component-wise equivariant estimation of order restricted location/scale parameters of a general bivariate distribution under quite general conditions on underlying distributions and the loss function. This paper unifies various…

统计理论 · 数学 2022-07-05 Naresh Garg , Neeraj Misra

We present a higher well-ordering principle which is equivalent (over Simpson's set theoretic version of $\text{ATR}_0$) to the existence of transitive models of Kripke-Platek set theory, and thus to $\Pi^1_1$-comprehension. This is a…

逻辑 · 数学 2018-09-20 Anton Freund

We propose a new concept of generalized differentiation of set-valued maps that captures the first order information. This concept encompasses the standard notions of Frechet differentiability, strict differentiability, calmness and…

最优化与控制 · 数学 2011-01-04 C. H. Jeffrey Pang

The concept of "stochastic precedence" between two real-valued random variables has often emerged in different applied frameworks. In this paper we consider a slightly more general, and completely natural, concept of stochastic precedence…

概率论 · 数学 2015-06-17 Emilio De Santis , Fabio Fantozzi , Fabio Spizzichino

Although substantial efforts have been made to learn disentangled representations under the variational autoencoder (VAE) framework, the fundamental properties to the dynamics of learning of most VAE models still remain unknown and…

机器学习 · 计算机科学 2020-07-14 Yanjun Li , Shujian Yu , Jose C. Principe , Xiaolin Li , Dapeng Wu

Humans are continuously exposed to a stream of visual data with a natural temporal structure. However, most successful computer vision algorithms work at image level, completely discarding the precious information carried by motion. In this…

计算机视觉与模式识别 · 计算机科学 2020-04-27 Alessandro Betti , Marco Gori , Stefano Melacci

Learning new tasks by drawing on prior experience gathered from other (related) tasks is a core property of any intelligent system. Gradient-based meta-learning, especially MAML and its variants, has emerged as a viable solution to…

机器学习 · 计算机科学 2024-09-06 El Mahdi Chayti , Martin Jaggi

A variational Perturbation theory based on the functional integral approach is formulated for many-particle systems. Using the variational action obtained through Jensen-Peierls' inequality, a perturbative expansion scheme for the…

强关联电子 · 物理学 2009-10-31 Sang Koo You , Chul Koo Kim , Kyun Nahm , Hyun Sik Noh

For a finite partially ordered set we calculate the dimension of the variety of its subspace representations having fixed dimension vector. The dimension is given in terms of the Euler quadratic form associated with a partially ordered set,…

表示论 · 数学 2019-02-27 Claudia Cavalcante Fonseca , Kostiantyn Iusenko

This paper treats the variation of sets. We attempt to formulate convergence and continuity of set-valued functions in a different way from the theories on sequences of sets and correspondence. In the final section, we also attempt to…

泛函分析 · 数学 2020-03-24 Takefumi Fujimoto

We establish an invariance principle for a general class of stationary random fields indexed by $\mathbb Z^d$, under Hannan's condition generalized to $\mathbb Z^d$. To do so we first establish a uniform integrability result for stationary…

概率论 · 数学 2014-07-17 Dalibor Volný , Yizao Wang

While reinforcement learning algorithms provide automated acquisition of optimal policies, practical application of such methods requires a number of design decisions, such as manually designing reward functions that not only define the…

机器学习 · 计算机科学 2022-12-29 Tim G. J. Rudner , Vitchyr H. Pong , Rowan McAllister , Yarin Gal , Sergey Levine

Starting from kicked equations of motion with derivatives of non-integer orders, we obtain "fractional" discrete maps. These maps are generalizations of well-known universal, standard, dissipative, kicked damped rotator maps. The main…

混沌动力学 · 物理学 2018-04-02 Vasily E. Tarasov , George M. Zaslavsky

Notions of k-asimulation and asimulation are introduced as asymmetric counterparts to k-bisimulation and bisimulation, respectively. It is proved that a first-order formula is equivalent to a standard translation of an intuitionistic…

逻辑 · 数学 2015-04-13 Grigory K. Olkhovikov

Notions of asimulation and k-asimulation introduced in [Olkhovikov, 2011] are extended onto the level of predicate logic. We then prove that a first-order formula is equivalent to a standard translation of an intuitionistic predicate…

逻辑 · 数学 2015-04-13 Grigory K. Olkhovikov

A supervised learning problem is to find a function in a hypothesis function space given values on isolated data points. Inspired by the frequency principle in neural networks, we propose a Fourier-domain variational formulation for…

数值分析 · 数学 2020-12-08 Tao Luo , Zheng Ma , Zhiwei Wang , Zhi-Qin John Xu , Yaoyu Zhang

A vector variational principle is proved.

最优化与控制 · 数学 2009-07-08 Ewa M. Bednarczuk , Dariusz Zagrodny

We consider generalized gradients in the general context of $G$-structures. They are natural first order differential operators acting on sections of vector bundles associated to irreducible $G$-representations. We study their geometric…

微分几何 · 数学 2009-08-18 Mihaela Pilca

We find the complete set of fundamental invariants for systems of ordinary differential equations of order $\ge 4$ under the group of point transformations generalizing similar results for contact invariants of a single ODE and point…

微分几何 · 数学 2014-07-03 Boris Doubrov , Alexandr Medvedev

We define a filtration on the variational bicomplex according to jet order. The filtration is preserved by the interior Euler operator, which is not a module homomorphism with respect to the ring of smooth functions on the jet space.…

微分几何 · 数学 2026-01-01 Siye Wu , Haoran Yang