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We develop variational Laplace for Bayesian neural networks (BNNs) which exploits a local approximation of the curvature of the likelihood to estimate the ELBO without the need for stochastic sampling of the neural-network weights. The…

机器学习 · 统计学 2021-07-21 Ali Unlu , Laurence Aitchison

We develop variational Laplace for Bayesian neural networks (BNNs) which exploits a local approximation of the curvature of the likelihood to estimate the ELBO without the need for stochastic sampling of the neural-network weights. The…

机器学习 · 统计学 2021-08-11 Ali Unlu , Laurence Aitchison

Variable selection is an important statistical problem. This problem becomes more challenging when the candidate predictors are of mixed type (e.g. continuous and binary) and impact the response variable in nonlinear and/or non-additive…

统计方法学 · 统计学 2021-12-30 Chuji Luo , Michael J. Daniels

This study combines two different learning paradigms, k-nearest neighbor (k-NN) rule, as memory-based learning paradigm and relevance vector machines (RVM), as statistical learning paradigm. This combination is performed in kernel space and…

机器学习 · 计算机科学 2021-03-09 Sara Hosseinzadeh Kassani , Farhood Rismanchian , Peyman Hosseinzadeh Kassani

This study introduces PV-RNN, a novel variational RNN inspired by the predictive-coding ideas. The model learns to extract the probabilistic structures hidden in fluctuating temporal patterns by dynamically changing the stochasticity of its…

机器学习 · 计算机科学 2019-06-26 Ahmadreza Ahmadi , Jun Tani

We propose a non-parametric anomaly detection algorithm for high dimensional data. We score each datapoint by its average $K$-NN distance, and rank them accordingly. We then train limited complexity models to imitate these scores based on…

机器学习 · 计算机科学 2015-02-09 Jing Qian , Jonathan Root , Venkatesh Saligrama

Diagnosis of breast cancer has been well studied in the past. Multiple linear programming models have been devised to approximate the relationship between cell features and tumour malignancy. However, these models are less capable in…

机器学习 · 计算机科学 2020-02-21 Ke Quan

We present a new loss function for the validation of image landmarks detected via Convolutional Neural Networks (CNN). The network learns to estimate how accurate its landmark estimation is. This loss function is applicable to all…

计算机视觉与模式识别 · 计算机科学 2020-05-01 Wolfgang Fuhl , Enkelejda Kasneci

Physical symptoms caused by high stress commonly happen in our daily lives, leading to the importance of stress recognition systems. This study aims to improve stress classification by selecting appropriate features from Thermal-stress…

神经与进化计算 · 计算机科学 2021-09-09 Xuyang Shen , Jo Plested , Tom Gedeon

Financial markets are notoriously complex environments, presenting vast amounts of noisy, yet potentially informative data. We consider the problem of forecasting financial time series from a wide range of information sources using online…

统计金融 · 定量金融 2018-07-12 Sid Ghoshal , Stephen Roberts

Breast cancer is the second leading cause of cancer-related death after lung cancer in women. Early detection of breast cancer in X-ray mammography is believed to have effectively reduced the mortality rate. However, a relatively high false…

图像与视频处理 · 电气工程与系统科学 2021-02-16 Xuejiao Tang , Liuhua Zhang , Wenbin Zhang , Xin Huang , Vasileios Iosifidis , Zhen Liu , Mingli Zhang , Enza Messina , Ji Zhang

In this work, we study the binary neural networks (BNNs) of which both the weights and activations are binary (i.e., 1-bit representation). Feature representation is critical for deep neural networks, while in BNNs, the features only differ…

计算机视觉与模式识别 · 计算机科学 2022-03-01 Ping Xue , Yang Lu , Jingfei Chang , Xing Wei , Zhen Wei

Model-X knockoffs is a general procedure that can leverage any feature importance measure to produce a variable selection algorithm, which discovers true effects while rigorously controlling the number or fraction of false positives.…

统计方法学 · 统计学 2020-12-07 Zhimei Ren , Yuting Wei , Emmanuel Candès

This paper is concerned with Bayesian inference when the likelihood is analytically intractable but can be unbiasedly estimated. We propose an annealed importance sampling procedure for estimating expectations with respect to the posterior.…

统计方法学 · 统计学 2014-02-26 M. -N. Tran , C. Strickland , M. K. Pitt , R. Kohn

Bayesian Neural Networks (BNN) have emerged as a crucial approach for interpreting ML predictions. By sampling from the posterior distribution, data scientists may estimate the uncertainty of an inference. Unfortunately many inference…

机器学习 · 计算机科学 2023-11-23 Thomas D. Ahle , Sahar Karimi , Peter Tak Peter Tang

kNN is a very effective Instance based learning method, and it is easy to implement. Due to heterogeneous nature of data, noises from different possible sources are also widespread in nature especially in case of large-scale databases. For…

机器学习 · 计算机科学 2020-05-19 Joydip Dhar , Ashaya Shukla , Mukul Kumar , Prashant Gupta

In 2015, Barber and Candes introduced a new variable selection procedure called the knockoff filter to control the false discovery rate (FDR) and prove that this method achieves exact FDR control. Inspired by the work of Barber and Candes…

统计方法学 · 统计学 2019-07-23 Jiajie Chen , Anthony Hou , Thomas Y. Hou

Artificial neural networks (ANNs) are powerful machine learning methods used in many modern applications such as facial recognition, machine translation, and cancer diagnostics. A common issue with ANNs is that they usually have millions or…

机器学习 · 统计学 2023-05-08 Lars Skaaret-Lund , Geir Storvik , Aliaksandr Hubin

Deep neural networks (DNN) such as Multi-Layer Perception (MLP) and Convolutional Neural Networks (CNN) represent one of the most established deep learning algorithms. Given the tremendous effects of the number of hidden layers on network…

图像与视频处理 · 电气工程与系统科学 2021-11-17 Shihao Shao , Yong Liu , Qinghua Cui

A new statistical procedure (Model-X \cite{candes2018}) has provided a way to identify important factors using any supervised learning method controlling for FDR. This line of research has shown great potential to expand the horizon of…

统计方法学 · 统计学 2018-10-01 Ying Liu , Cheng Zheng