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Variational approaches based on neural networks are showing promise for estimating mutual information (MI) between high dimensional variables. However, they can be difficult to use in practice due to poorly understood bias/variance…

机器学习 · 计算机科学 2020-03-25 Jiaming Song , Stefano Ermon

We propose a novel resource efficient analog over-the-air (OTA) computation framework to address the demanding requirements of the uplink (UL) fronthaul between the access points (APs) and the central processing unit (CPU) in cell-free…

信息论 · 计算机科学 2023-11-15 Zakir Hussain Shaik , Sai Subramanyam Thoota , Emil Björnson , Erik G. Larsson

A new method for the computation of the posterior distribution of the number k of components in a finite mixture is presented. Two aspects of prior specification are also studied: an argument is made for the use of a Poisson(1) distribution…

统计方法学 · 统计学 2007-11-06 Agostino Nobile

Weighted Updating generalizes Bayesian updating, allowing for biased beliefs by weighting the likelihood function and prior distribution with positive real exponents. I provide a rigorous foundation for the model by showing that…

概率论 · 数学 2016-02-09 Jesse Aaron Zinn

In auto insurance, a Bonus-Malus System (BMS) is commonly used as a posteriori risk classification mechanism to set the premium for the next contract period based on a policyholder's claim history. Even though recent literature reports…

应用统计 · 统计学 2020-03-05 Rosy Oh , Joseph H. T. Kim , Jae Youn Ahn

This study models the monopoly pricing of weather index insurance as a Bowley-type sequential game involving a profit-maximizing insurer (leader) and a farmer (follower). The farmer chooses an insurance payoff to minimize a convex…

风险管理 · 定量金融 2025-12-02 Tim J. Boonen , Wenyuan Li , Zixiao Quan

Experimental (design) optimization is a key driver in designing and discovering new products and processes. Bayesian Optimization (BO) is an effective tool for optimizing expensive and black-box experimental design processes. While Bayesian…

机器学习 · 计算机科学 2024-02-28 Arun Kumar A , Alistair Shilton , Sunil Gupta , Santu Rana , Stewart Greenhill , Svetha Venkatesh

Parameter estimates for associated genetic variants, report ed in the initial discovery samples, are often grossly inflated compared to the values observed in the follow-up replication samples. This type of bias is a consequence of the…

应用统计 · 统计学 2011-04-15 Lizhen Xu , Radu V. Craiu , Lei Sun

An efficient algorithm is proposed for Bayesian model calibration, which is commonly used to estimate the model parameters of non-linear, computationally expensive models using measurement data. The approach is based on Bayesian statistics:…

We present a tutorial on Bayesian optimization, a method of finding the maximum of expensive cost functions. Bayesian optimization employs the Bayesian technique of setting a prior over the objective function and combining it with evidence…

机器学习 · 计算机科学 2010-12-14 Eric Brochu , Vlad M. Cora , Nando de Freitas

Bayesian neural networks (BNNs) can account for both aleatoric and epistemic uncertainty. However, in BNNs the priors are often specified over the weights which rarely reflects true prior knowledge in large and complex neural network…

机器学习 · 计算机科学 2023-01-25 Vishnu Raj , Tianyu Cui , Markus Heinonen , Pekka Marttinen

We propose a Bayesian model selection approach that allows medical practitioners to select among predictor variables while taking their respective costs into account. Medical procedures almost always incur costs in time and/or money. These…

统计方法学 · 统计学 2024-05-07 Erica M. Porter , Christopher T. Franck , Stephen Adams

We review Markov models of surplus in life insurance based on a counting process following Norberg (1991), uniting probabilistic theory with elements of practice largely drawn from UK experience. First, we organize models systematically…

证券定价 · 定量金融 2025-09-03 Oytun Haçarız , Torsten Kleinow , Angus S. Macdonald

Bayesian optimisation for real-world problems is often performed interactively with human experts, and integrating their domain knowledge is key to accelerate the optimisation process. We consider a setup where experts provide advice on the…

机器学习 · 计算机科学 2024-10-15 Wenjie Xu , Masaki Adachi , Colin N. Jones , Michael A. Osborne

Demand forecasting is extremely important in revenue management. After all, it is one of the inputs to an optimisation method which aim is to maximize revenue. Most, if not all, forecasting methods use historical data to forecast the…

最优化与控制 · 数学 2021-03-16 Daniel Hopman , Ger Koole , Rob van der Mei

Here we focus on the description of the mechanisms behind the process of information aggregation and decision making, a basic step to understand emergent phenomena in society, such as trends, information spreading or the wisdom of crowds.…

物理与社会 · 物理学 2015-04-15 Víctor M. Eguíluz , N. Masuda , J. Fernández-Gracia

Recent progress in the development of efficient computational algorithms to price financial derivatives is summarized. A first algorithm is based on a path integral approach to option pricing, while a second algorithm makes use of a neural…

统计力学 · 物理学 2009-11-07 G. Montagna , M. Morelli , O. Nicrosini , P. Amato , M. Farina

Missing time-series data is a prevalent problem in many prescriptive analytics models in operations management, healthcare and finance. Imputation methods for time-series data are usually applied to the full panel data with the purpose of…

统计方法学 · 统计学 2023-04-13 Jose Blanchet , Fernando Hernandez , Viet Anh Nguyen , Markus Pelger , Xuhui Zhang

Multiple machine learning and prediction models are often used for the same prediction or recommendation task. In our recent work, where we develop and deploy airline ancillary pricing models in an online setting, we found that among…

机器学习 · 计算机科学 2019-05-23 Naman Shukla , Arinbjörn Kolbeinsson , Lavanya Marla , Kartik Yellepeddi

Actuaries use predictive modeling techniques to assess the loss cost on a contract as a function of observable risk characteristics. State-of-the-art statistical and machine learning methods are not well equipped to handle hierarchically…

应用统计 · 统计学 2023-02-01 Bavo D. C. Campo , Katrien Antonio
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