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We propose a general framework to learn deep generative models via \textbf{V}ariational \textbf{Gr}adient Fl\textbf{ow} (VGrow) on probability spaces. The evolving distribution that asymptotically converges to the target distribution is…

机器学习 · 计算机科学 2019-05-07 Yuan Gao , Yuling Jiao , Yang Wang , Yao Wang , Can Yang , Shunkang Zhang

We combine two popular optimization approaches to derive learning algorithms for generative models: variational optimization and evolutionary algorithms. The combination is realized for generative models with discrete latents by using…

机器学习 · 统计学 2022-02-07 Jakob Drefs , Enrico Guiraud , Jörg Lücke

When working with three-dimensional data, choice of representation is key. We explore voxel-based models, and present evidence for the viability of voxellated representations in applications including shape modeling and object…

计算机视觉与模式识别 · 计算机科学 2016-08-17 Andrew Brock , Theodore Lim , J. M. Ritchie , Nick Weston

The idea that there are any large-scale trends in the evolution of biological organisms is highly controversial. It is commonly believed, for example, that there is a large-scale trend in evolution towards increasing complexity, but…

神经与进化计算 · 计算机科学 2021-06-08 Peter D. Turney

Given a quantum Hamiltonian and its evolution time, the corresponding unitary evolution operator can be constructed in many different ways, corresponding to different trajectories between the desired end-points and different series…

量子物理 · 物理学 2017-03-14 Apoorva Patel , Anjani Priyadarsini

Evolutionary optimization algorithms are often derived from loose biological analogies and struggle to leverage information obtained during the sequential course of optimization. An alternative promising approach is to leverage data and…

人工智能 · 计算机科学 2024-03-06 Robert Tjarko Lange , Yingtao Tian , Yujin Tang

I explain how to evolve segmented strings in de Sitter and anti-de Sitter spaces of any dimension in terms of forward-directed null displacements. The evolution is described entirely in terms of discrete hops which do not require a…

高能物理 - 理论 · 物理学 2016-11-23 Steven S. Gubser

Evolutionary processes proved very useful for solving optimization problems. In this work, we build a formalization of the notion of cooperation and competition of multiple systems working toward a common optimization goal of the population…

神经与进化计算 · 计算机科学 2007-05-23 Mark Burgin , Eugene Eberbach

TeVeS uses a dynamical vector field with timelike unit norm constraint to specify a preferred local frame. When matter moves slowly in this frame - the so-called quasi-static regime - Modified Newtonian Dynamics (MoND) results. Theories…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Carlo R. Contaldi , Toby Wiseman , Benjamin Withers

We give a derivation of the method of conjugate gradients based on the requirement that each iterate minimizes a strictly convex quadratic on the space spanned by the previously observed gradients. Rather than verifying that the search…

最优化与控制 · 数学 2021-04-02 David Ek , Anders Forsgren

Recent advancements in artificial intelligence, particularly deep neural networks, have pushed the boundaries of what is achievable in complex tasks. Traditional methods for training neural networks in classification problems often rely on…

机器学习 · 计算机科学 2024-09-10 Jaouad Dabounou

Lead optimization is a pivotal task in the drug design phase within the drug discovery lifecycle. The primary objective is to refine the lead compound to meet specific molecular properties for progression to the subsequent phase of…

生物大分子 · 定量生物学 2024-07-22 Siddartha Reddy N , Sai Prakash MV , Varun V , Vishal Vaddina , Saisubramaniam Gopalakrishnan

Particle-mesh simulations trade small-scale accuracy for speed compared to traditional, computationally expensive N-body codes in cosmological simulations. In this work, we show how a data-driven model could be used to learn an effective…

宇宙学与河外天体物理 · 物理学 2023-12-01 Nicolas Payot , Pablo Lemos , Laurence Perreault-Levasseur , Carolina Cuesta-Lazaro , Chirag Modi , Yashar Hezaveh

We combine momentum from machine learning with evolutionary dynamics, where momentum can be viewed as a simple mechanism of intergenerational memory. Using information divergences as Lyapunov functions, we show that momentum accelerates the…

机器学习 · 计算机科学 2025-11-05 Marc Harper , Joshua Safyan

More than 80% of today's data is unstructured in nature, and these unstructured datasets evolve over time. A large part of these datasets are text documents generated by media outlets, scholarly articles in digital libraries, findings from…

计算与语言 · 计算机科学 2019-03-21 Roberto Camacho Barranco , Raimundo F. Dos Santos , M. Shahriar Hossain

Flow-based models have proven successful for time-series generation, particularly when defined in lower-dimensional latent spaces that enable efficient sampling. However, how to design latent representations with desirable equivariance…

机器学习 · 计算机科学 2026-02-02 Camilo Carvajal Reyes , Felipe Tobar

We consider Evolution Strategies operating only with isotropic Gaussian mutations on positive quadratic objective functions, and investigate the covariance matrix when constructed out of selected individuals by truncation. We prove that the…

神经与进化计算 · 计算机科学 2019-10-29 Ofer M. Shir , Amir Yehudayoff

Many studies have been done to prove the vulnerability of neural networks to adversarial example. A trained and well-behaved model can be fooled by a visually imperceptible perturbation, i.e., an originally correctly classified image could…

计算机视觉与模式识别 · 计算机科学 2019-06-24 YiGui Luo , RuiJia Yang , Wei Sha , WeiYi Ding , YouTeng Sun , YiSi Wang

Reinforcement Learning methods are capable of solving complex problems, but resulting policies might perform poorly in environments that are even slightly different. In robotics especially, training and deployment conditions often vary and…

机器学习 · 计算机科学 2018-09-17 Isac Arnekvist , Danica Kragic , Johannes A. Stork

The generative modeling of data on manifolds is an important task, for which diffusion models in flat spaces typically need nontrivial adaptations. This article demonstrates how a technique called `trivialization' can transfer the…

机器学习 · 计算机科学 2025-02-13 Yuchen Zhu , Tianrong Chen , Lingkai Kong , Evangelos A. Theodorou , Molei Tao