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Causal discovery with time series data remains a challenging yet increasingly important task across many scientific domains. Convergent cross mapping (CCM) and related methods have been proposed to study time series that are generated by…

机器学习 · 计算机科学 2025-06-25 Kurt Butler , Daniel Waxman , Petar M. Djurić

Despite their prevalence in deep-learning communities, over-parameterized models convey high demands of computational costs for proper training. This work studies the fine-grained, modular-level learning dynamics of over-parameterized…

Fine-grained visual categorization (FGVC), which aims at classifying objects with small inter-class variances, has been significantly advanced in recent years. However, ultra-fine-grained visual categorization (ultra-FGVC), which targets at…

计算机视觉与模式识别 · 计算机科学 2021-10-28 Yajie Sun , Miaohua Zhang , Xiaohan Yu , Yi Liao , Yongsheng Gao

We study inference-time alignment for diffusion-based generative models, aiming to steer a base model toward high-reward outputs without updating its weights. Recent Sequential Monte Carlo (SMC)-based steering methods approximate…

机器学习 · 计算机科学 2026-05-26 Weixin Wang , Yu Yang , Wei Deng , Pan Xu

Scaling training compute, measured in FLOPs, has long been shown to improve the accuracy of large language models, yet training remains resource-intensive. Prior work shows that increasing test-time compute (TTC)-for example through…

计算与语言 · 计算机科学 2026-01-06 Hossam Amer , Maryam Dialameh , Hossein Rajabzadeh , Walid Ahmed , Weiwei Zhang , Yang Liu

Estimating reliable geometric model parameters from the data with severe outliers is a fundamental and important task in computer vision. This paper attempts to sample high-quality subsets and select model instances to estimate parameters…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Guobao Xiao , Jun Yu , Jiayi Ma , Deng-Ping Fan , Ling Shao

We propose a Topic Compositional Neural Language Model (TCNLM), a novel method designed to simultaneously capture both the global semantic meaning and the local word ordering structure in a document. The TCNLM learns the global semantic…

机器学习 · 计算机科学 2018-02-27 Wenlin Wang , Zhe Gan , Wenqi Wang , Dinghan Shen , Jiaji Huang , Wei Ping , Sanjeev Satheesh , Lawrence Carin

This paper focuses on passenger-oriented real-time train rescheduling, considering flexible train composition and rolling stock circulation, by integrating learning-based and optimization-based approaches. A learning-based model predictive…

系统与控制 · 电气工程与系统科学 2025-08-01 Xiaoyu Liu , Caio Fabio Oliveira da Silva , Azita Dabiri , Yihui Wang , Bart De Schutter

Tensor train (TT) decomposition, a powerful tool for analyzing multidimensional data, exhibits superior performance in many machine learning tasks. However, existing methods for TT decomposition either suffer from noise overfitting, or…

信号处理 · 电气工程与系统科学 2023-06-27 Le Xu , Lei Cheng , Ngai Wong , Yik-Chung Wu

Connectionist Temporal Classification has recently attracted a lot of interest as it offers an elegant approach to building acoustic models (AMs) for speech recognition. The CTC loss function maps an input sequence of observable feature…

计算与语言 · 计算机科学 2017-08-16 Thomas Zenkel , Ramon Sanabria , Florian Metze , Jan Niehues , Matthias Sperber , Sebastian Stüker , Alex Waibel

Tensor decomposition is one of the well-known approaches to reduce the latency time and number of parameters of a pre-trained model. However, in this paper, we propose an approach to use tensor decomposition to reduce training time of…

计算机视觉与模式识别 · 计算机科学 2020-06-30 Mostafa Elhoushi , Ye Henry Tian , Zihao Chen , Farhan Shafiq , Joey Yiwei Li

The synthetic control method (SCM) estimates causal effects in panel data with a single-treated unit by constructing a counterfactual outcome as a weighted combination of untreated control units that matches the pre-treatment trajectory. In…

机器学习 · 统计学 2026-05-13 Yuxin Wang , Dennis Frauen , Emil Javurek , Konstantin Hess , Yuchen Ma , Stefan Feuerriegel

Markov Chain Monte Carlo (MCMC) underlies both statistical physics and combinatorial optimization, but mixes slowly near critical points and in rough landscapes. Parallel Tempering (PT) improves mixing by swapping replicas across…

机器学习 · 计算机科学 2025-09-30 Saleh Bunaiyan , Corentin Delacour , Shuvro Chowdhury , Kyle Lee , Kerem Y. Camsari

We propose a stochastic model predictive control (MPC) framework for linear systems subject to joint-in-time chance constraints under unknown disturbance distributions. Unlike existing approaches that rely on parametric or Gaussian…

系统与控制 · 电气工程与系统科学 2026-04-21 Lukas Vogel , Andrea Carron , Eleftherios E. Vlahakis , Dimos V. Dimarogonas

Tensor decompositions are invaluable tools in analyzing multimodal datasets. In many real-world scenarios, such datasets are far from being static, to the contrary they tend to grow over time. For instance, in an online social network…

机器学习 · 统计学 2024-06-03 Ekta Gujral , Ravdeep Pasricha , Evangelos E. Papalexakis

Model predictive control (MPC) is a powerful control method that handles dynamical systems with constraints. However, solving MPC iteratively in real time, i.e., implicit MPC, remains a computational challenge. To address this, common…

系统与控制 · 电气工程与系统科学 2022-08-03 Fangyu Wu , Guanhua Wang , Siyuan Zhuang , Kehan Wang , Alexander Keimer , Ion Stoica , Alexandre Bayen

As the open community of large language models (LLMs) matures, multimodal LLMs (MLLMs) have promised an elegant bridge between vision and language. However, current research is inherently constrained by challenges such as the need for…

计算机视觉与模式识别 · 计算机科学 2024-08-12 Dongsheng Wang , Jiequan Cui , Miaoge Li , Wang Lin , Bo Chen , Hanwang Zhang

In this paper we present a framework for risk-sensitive model predictive control (MPC) of linear systems affected by stochastic multiplicative uncertainty. Our key innovation is to consider a time-consistent, dynamic risk evaluation of the…

最优化与控制 · 数学 2018-04-26 Sumeet Singh , Yin-Lam Chow , Anirudha Majumdar , Marco Pavone

Analyzing sequential data is crucial in many domains, particularly due to the abundance of data collected from the Internet of Things paradigm. Time series classification, the task of categorizing sequential data, has gained prominence,…

机器学习 · 计算机科学 2024-06-21 Venkata Ragavendra Vavilthota , Ranjith Ramanathan , Sathyanarayanan N. Aakur

We propose a computationally tractable, tube-based robust nonlinear model predictive control (MPC) framework using difference-of-convex (DC) functions and sequential convex programming. For systems with differentiable discrete time…

最优化与控制 · 数学 2026-02-03 Martin Doff-Sotta , Zaheen A-Rahman , Mark Cannon