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Synthetic data generation has been widely adopted in software testing, data privacy, imbalanced learning, and artificial intelligence explanation. In all such contexts, it is crucial to generate plausible data samples. A common assumption…

人工智能 · 计算机科学 2024-10-16 Martina Cinquini , Fosca Giannotti , Riccardo Guidotti

A new statistical technique for constructing linear latent structure (LLS) models from available data, supported by well established theoretical results and an efficient algorithm, is presented. The method reduces the problem of estimating…

统计理论 · 数学 2007-06-13 I. Akushevich , M. Kovtun , A. I. Yashin , K. G. Manton

We explore a data-driven approach for learning to optimize neural networks. We construct a dataset of neural network checkpoints and train a generative model on the parameters. In particular, our model is a conditional diffusion transformer…

机器学习 · 计算机科学 2022-09-27 William Peebles , Ilija Radosavovic , Tim Brooks , Alexei A. Efros , Jitendra Malik

Currently, machine learning (ML) methods are widely used to process the results of physical experiments. In some cases, due to the limited amount of experimental data, ML-models can be pre-trained on synthetic data simulated based on the…

计算物理 · 物理学 2022-09-22 Y. R. Rodimkov , V. D. Volokitin , I. B. Meyerov , E. S. Efimenko

Traditionally, fault detection and isolation community has used system dynamic equations to generate diagnosers and to analyze detectability and isolability of the dynamic systems. Model-based fault detection and isolation methods use…

系统与控制 · 电气工程与系统科学 2021-11-01 Hamed Khorasgani , Ahmed Farahat , Chetan Gupta

This article makes discrete masked models for the generative modeling of discrete data controllable. The goal is to generate samples of a discrete random variable that adheres to a posterior distribution, satisfies specific constraints, or…

机器学习 · 计算机科学 2024-10-04 Wei Guo , Yuchen Zhu , Molei Tao , Yongxin Chen

Stochastic processes offer a flexible mathematical formalism to model and reason about systems. Most analysis tools, however, start from the premises that models are fully specified, so that any parameters controlling the system's dynamics…

系统与控制 · 计算机科学 2017-01-11 Luca Bortolussi , Guido Sanguinetti

Particle-based shape modeling (PSM) is a popular approach to automatically quantify shape variability in populations of anatomies. The PSM family of methods employs optimization to automatically populate a dense set of corresponding…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Hong Xu , Shireen Y. Elhabian

We derive direct data-driven dissipativity analysis methods for Linear Parameter-Varying (LPV) systems using a single sequence of input-scheduling-output data. By means of constructing a semi-definite program subject to linear matrix…

系统与控制 · 电气工程与系统科学 2024-07-10 Chris Verhoek , Julian Berberich , Sofie Haesaert , Frank Allgöwer , Roland Tóth

There is significant growth and interest in the use of synthetic data as an enabler for machine learning in environments where the release of real data is restricted due to privacy or availability constraints. Despite a large number of…

机器学习 · 计算机科学 2020-11-25 Harrison Wilde , Jack Jewson , Sebastian Vollmer , Chris Holmes

In this contribution we present an accelerated optimization-based approach for combined state and parameter reduction of a parametrized linear control system which is then used as a surrogate model in a Bayesian inverse setting. Following…

最优化与控制 · 数学 2016-08-22 Christian Himpe , Mario Ohlberger

This paper is concerned with sequential state filtering in the presence of nonlinearity, non-Gaussianity and model uncertainty. For this problem, the Bayesian model averaged particle filter (BMAPF) is perhaps one of the most efficient…

统计计算 · 统计学 2020-01-28 Bin Liu

We introduce the concept of decision-focused surrogate modeling for solving computationally challenging nonlinear optimization problems in real-time settings. The proposed data-driven framework seeks to learn a simpler, e.g. convex,…

最优化与控制 · 数学 2023-12-27 Rishabh Gupta , Qi Zhang

Estimating how a treatment affects units individually, known as heterogeneous treatment effect (HTE) estimation, is an essential part of decision-making and policy implementation. The accumulation of large amounts of data in many domains,…

机器学习 · 计算机科学 2022-06-28 Christopher Tran , Elena Zheleva

A novel strategy for generating datasets is developed within the context of drag prediction for automotive geometries using neural networks. A primary challenge in this space is constructing a training databse of sufficient size and…

机器学习 · 计算机科学 2024-08-15 Mark Benjamin , Gianluca Iaccarino

This work applies concepts of artificial neural networks to identify the parameters of a mathematical model based on phase fields for damage and fracture. Damage mechanics is the part of the continuum mechanics that models the effects of…

材料科学 · 物理学 2021-07-21 Carlos J. G. Rojas , Marco L. Bitterncourt , José L. Boldrini

Micropatterning techniques have become an important tool for the study of cell behavior in controlled microenvironments. As a consequence, several approaches for the creation of micropatterns have been developed in recent years. However,…

Predictive dynamical models for marine ecosystems are used for a variety of needs. Due to sparse measurements and limited understanding of the myriad of ocean processes, there is however significant uncertainty. There is model uncertainty…

计算工程、金融与科学 · 计算机科学 2023-06-06 Abhinav Gupta , Pierre F. J. Lermusiaux

Molecular dynamics (MD) is a powerful technique for studying microscopic phenomena, but its computational cost has driven significant interest in the development of deep learning-based surrogate models. We introduce generative modeling of…

生物大分子 · 定量生物学 2024-09-27 Bowen Jing , Hannes Stärk , Tommi Jaakkola , Bonnie Berger

Deep learning models have achieved remarkable success in computer vision but still rely heavily on large-scale labeled data and tend to overfit when data is limited or distributions shift. Data augmentation -- particularly mask-based…

计算机视觉与模式识别 · 计算机科学 2026-01-16 Shuyin Xia , Fan Chen , Dawei Dai , Meng Yang , Junwei Han , Xinbo Gao , Guoyin Wang