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This work proposes a unified framework for portfolio allocation, covering both asset selection and optimization, based on a multiple-hypothesis predict-then-optimize approach. The portfolio is modeled as a structured ensemble, where each…

投资组合管理 · 定量金融 2025-11-19 Alejandro Rodriguez Dominguez , Muhammad Shahzad , Xia Hong

Accurate and robust recognition and prediction of traffic situation plays an important role in autonomous driving, which is a prerequisite for risk assessment and effective decision making. Although there exist a lot of works dealing with…

人工智能 · 计算机科学 2018-09-11 Jiachen Li , Hengbo Ma , Wei Zhan , Masayoshi Tomizuka

Short-term probabilistic wind power forecasting can provide critical quantified uncertainty information of wind generation for power system operation and control. As the complicated characteristics of wind power prediction error, it would…

机器学习 · 计算机科学 2017-02-14 You Lin , Ming Yang , Can Wan , Jianhui Wang , Yonghua Song

In this paper, we present a semantic mapping approach with multiple hypothesis tracking for data association. As semantic information has the potential to overcome ambiguity in measurements and place recognition, it forms an eminent…

机器人学 · 计算机科学 2020-12-09 Lukas Bernreiter , Abel Gawel , Hannes Sommer , Juan Nieto , Roland Siegwart , Cesar Cadena

The Multiple Hypothesis Tracking (MHT) algorithm is known to produce good results in difficult multi-target tracking situations. However, its implementation is not trivial, and is associated with a significant programming effort, code size…

数据结构与算法 · 计算机科学 2011-06-14 David Miguel Antunes , David Martins de Matos , José Gaspar

Constantine et al. (2016) introduced a Metropolis-Hastings (MH) approach that target the active subspace of a posterior distribution: a linearly projected subspace that is informed by the likelihood. Schuster et al. (2017) refined this…

统计方法学 · 统计学 2025-01-10 Leonardo Ripoli , Richard G. Everitt

This research leverages Conformal Prediction (CP) in the form of Conformal Predictive Systems (CPS) to accurately estimate uncertainty in a suite of machine learning (ML)-based radio metric models [1] as well as in a 2-D map-based ML path…

机器学习 · 计算机科学 2025-01-14 Alexis Bose , Jonathan Ethier , Ryan G. Dempsey , Yifeng Qiu

The problem of sampling constrained continuous distributions has frequently appeared in many machine/statistical learning models. Many Monte Carlo Markov Chain (MCMC) sampling methods have been adapted to handle different types of…

统计计算 · 统计学 2023-02-21 Shiwei Lan , Lulu Kang

Performative prediction is an emerging paradigm in machine learning that addresses scenarios where the model's prediction may induce a shift in the distribution of the data it aims to predict. Current works in this field often rely on…

机器学习 · 计算机科学 2025-09-03 Guangzheng Zhong , Yang Liu , Jiming Liu

Roads have well defined geometries, topologies, and traffic rules. While this has been widely exploited in motion planning methods to produce maneuvers that obey the law, little work has been devoted to utilize these priors in perception…

计算机视觉与模式识别 · 计算机科学 2020-06-05 Sergio Casas , Cole Gulino , Simon Suo , Raquel Urtasun

In this paper, we introduce a new technique that combines two popular methods to estimate uncertainty in object detection. Quantifying uncertainty is critical in real-world robotic applications. Traditional detection models can be ambiguous…

计算机视觉与模式识别 · 计算机科学 2021-06-30 Zongyao Lyu , Nolan B. Gutierrez , William J. Beksi

Reinforcement learning from human feedback (RLHF) is a critical technique for training large language models. However, conventional reward models based on the Bradley-Terry model (BTRM) often suffer from overconfidence when faced with…

机器学习 · 计算机科学 2025-05-19 Wangtao Sun , Xiang Cheng , Xing Yu , Haotian Xu , Zhao Yang , Shizhu He , Jun Zhao , Kang Liu

Estimating how uncertain an AI system is in its predictions is important to improve the safety of such systems. Uncertainty in predictive can result from uncertainty in model parameters, irreducible data uncertainty and uncertainty due to…

机器学习 · 统计学 2018-12-03 Andrey Malinin , Mark Gales

Hamiltonian Monte Carlo (HMC) has emerged as a powerful Markov Chain Monte Carlo (MCMC) method to sample from complex continuous distributions. However, a fundamental limitation of HMC is that it can not be applied to distributions with…

统计计算 · 统计学 2021-12-10 Guangyao Zhou

Markov Chain Monte Carlo (MCMC) methods have a drawback when working with a target distribution or likelihood function that is computationally expensive to evaluate, specially when working with big data. This paper focuses on…

机器学习 · 计算机科学 2019-10-22 Asif J. Chowdhury , Gabriel Terejanu

In multiple change-point problems, different data segments often follow different distributions, for which the changes may occur in the mean, scale or the entire distribution from one segment to another. Without the need to know the number…

统计理论 · 数学 2014-05-29 Changliang Zou , Guosheng Yin , Long Feng , Zhaojun Wang

We consider a distributed learning setup where a network of agents sequentially access realizations of a set of random variables with unknown distributions. The network objective is to find a parametrized distribution that best describes…

最优化与控制 · 数学 2016-05-10 Angelia Nedić , Alex Olshevsky , César Uribe

We consider probabilistic systems with hidden state and unobservable transitions, an extension of Hidden Markov Models (HMMs) that in particular admits unobservable {\epsilon}-transitions (also called null transitions), allowing state…

机器学习 · 计算机科学 2022-05-30 Rebecca Bernemann , Barbara König , Matthias Schaffeld , Torben Weis

The task of state estimation in active distribution systems faces a major challenge due to the integration of different measurements with multiple reporting rates. As a result, distribution systems are essentially unobservable in real time,…

最优化与控制 · 数学 2024-05-13 J. G. De la Varga , S. Pineda , J. M. Morales , Á. Porras

Existing approaches to predictive uncertainty rely either on multi-hypothesis prediction, which promotes diversity but lacks principled aggregation, or on ensemble learning, which improves accuracy but rarely captures the structured…

机器学习 · 计算机科学 2025-09-04 Alejandro Rodriguez Dominguez , Muhammad Shahzad , Xia Hong