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Scientific studies often require the precise calculation of derivatives. In many cases an analytical calculation is not feasible and one resorts to evaluating derivatives numerically. These are error-prone, especially for higher-order…

高能物理 - 唯象学 · 物理学 2010-05-28 Mathias Wagner , Andrea Walther , Bernd-Jochen Schaefer

This paper develops a difference-in-differences (DiD) estimation method that selects the optimal length of pre-trends by minimizing the mean squared error (MSE). Conventional DiD regression models, such as the two-way fixed effects model or…

计量经济学 · 经济学 2026-05-07 Yamato Igarashi

We develop a new primitive for stochastic optimization: a low-bias, low-cost estimator of the minimizer $x_\star$ of any Lipschitz strongly-convex function. In particular, we use a multilevel Monte-Carlo approach due to Blanchet and Glynn…

最优化与控制 · 数学 2021-10-29 Hilal Asi , Yair Carmon , Arun Jambulapati , Yujia Jin , Aaron Sidford

An important problem that arises in reinforcement learning and Monte Carlo methods is estimating quantities defined by the stationary distribution of a Markov chain. In many real-world applications, access to the underlying transition…

机器学习 · 统计学 2020-02-24 Ruiyi Zhang , Bo Dai , Lihong Li , Dale Schuurmans

We introduce a Monte Carlo method for computing derivatives of the solution to a partial differential equation (PDE) with respect to problem parameters (such as domain geometry or boundary conditions). Derivatives can be evaluated at…

图形学 · 计算机科学 2024-09-19 Bailey Miller , Rohan Sawhney , Keenan Crane , Ioannis Gkioulekas

Deep ensembles perform better than a single network thanks to the diversity among their members. Recent approaches regularize predictions to increase diversity; however, they also drastically decrease individual members' performances. In…

机器学习 · 计算机科学 2021-01-15 Alexandre Rame , Matthieu Cord

The combination of Monte Carlo methods and deep learning has recently led to efficient algorithms for solving partial differential equations (PDEs) in high dimensions. Related learning problems are often stated as variational formulations…

机器学习 · 计算机科学 2022-08-08 Lorenz Richter , Julius Berner

We introduce Dagma-DCE, an interpretable and model-agnostic scheme for differentiable causal discovery. Current non- or over-parametric methods in differentiable causal discovery use opaque proxies of ``independence'' to justify the…

机器学习 · 计算机科学 2024-02-05 Daniel Waxman , Kurt Butler , Petar M. Djuric

Gradient Descent (GD) and Conjugate Gradient (CG) methods are among the most effective iterative algorithms for solving unconstrained optimization problems, particularly in machine learning and statistical modeling, where they are employed…

最优化与控制 · 数学 2024-12-19 Xianqi Jiao , Jia Liu , Zhiping Chen

We propose a novel family of decision-aware surrogate losses, called Perturbation Gradient (PG) losses, for the predict-then-optimize framework. The key idea is to connect the expected downstream decision loss with the directional…

机器学习 · 计算机科学 2024-11-01 Michael Huang , Vishal Gupta

In this paper, we propose a new stochastic optimization algorithm for Bayesian inference based on multilevel Monte Carlo (MLMC) methods. In Bayesian statistics, biased estimators of the model evidence have been often used as stochastic…

机器学习 · 统计学 2021-02-26 Kei Ishikawa , Takashi Goda

In this paper, we propose a new technique named \textit{Stochastic Path-Integrated Differential EstimatoR} (SPIDER), which can be used to track many deterministic quantities of interest with significantly reduced computational cost. We…

最优化与控制 · 数学 2018-10-18 Cong Fang , Chris Junchi Li , Zhouchen Lin , Tong Zhang

Optimization and control of complex unsteady flows remains an important challenge due to the large cost of performing a function evaluation, i.e. a full computational fluid dynamics (CFD) simulation. Reducing the number of required function…

流体动力学 · 物理学 2023-01-31 A. Quirós Rodríguez , M. Fosas de Pando , T. Sayadi

Score Distillation Sampling (SDS) is a recent but already widely popular method that relies on an image diffusion model to control optimization problems using text prompts. In this paper, we conduct an in-depth analysis of the SDS loss…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Thiemo Alldieck , Nikos Kolotouros , Cristian Sminchisescu

Diffusion models (DMs) have made significant progress in the fields of image, audio, and video generation. One downside of DMs is their slow iterative process. Recent algorithms for fast sampling are designed from the perspective of…

机器学习 · 统计学 2023-09-12 Shigui Li , Wei Chen , Delu Zeng

Evaluating modern machine learning models has become prohibitively expensive. Benchmarks such as LMMs-Eval and HELM demand thousands of GPU hours per model. Costly evaluation reduces inclusivity, slows the cycle of innovation, and worsens…

机器学习 · 计算机科学 2026-03-03 Alexander Rubinstein , Benjamin Raible , Martin Gubri , Seong Joon Oh

Stochastic differential equations (SDEs) or diffusions are continuous-valued continuous-time stochastic processes widely used in the applied and mathematical sciences. Simulating paths from these processes is usually an intractable problem,…

统计计算 · 统计学 2020-05-27 Qi Wang , Vinayak Rao , Yee Whye Teh

Recent advancements in testing differential item functioning (DIF) have greatly relaxed restrictions made by the conventional multiple group item response theory (IRT) model with respect to the number of grouping variables and the…

统计方法学 · 统计学 2023-06-13 Weimeng Wang , Yang Liu , Jeffrey R. Harring

In selective classification (SC), a classifier abstains from making predictions that are likely to be wrong to avoid excessive errors. To deploy imperfect classifiers -- either due to intrinsic statistical noise of data or for robustness…

机器学习 · 计算机科学 2024-11-28 Hengyue Liang , Le Peng , Ju Sun

Medical image segmentation is an actively studied task in medical imaging, where the precision of the annotations is of utter importance towards accurate diagnosis and treatment. In recent years, the task has been approached with various…

图像与视频处理 · 电气工程与系统科学 2022-12-22 Mariana-Iuliana Georgescu , Radu Tudor Ionescu , Andreea-Iuliana Miron