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Slow Feature Analysis (SFA) extracts features representing the underlying causes of changes within a temporally coherent high-dimensional raw sensory input signal. Our novel incremental version of SFA (IncSFA) combines incremental Principal…

人工智能 · 计算机科学 2012-10-11 Varun Raj Kompella , Matthew Luciw , Juergen Schmidhuber

As AI-generated images become increasingly photorealistic, distinguishing them from natural images poses a growing challenge. This paper presents a robust detection framework that leverages multiple uncertainty measures to decide whether to…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Rahul Yumlembam , Biju Issac , Nauman Aslam , Eaby Kollonoor Babu , Josh Collyer , Fraser Kennedy

Real-world data is often incomplete and contains missing values. To train accurate models over real-world datasets, users need to spend a substantial amount of time and resources imputing and finding proper values for missing data items. In…

机器学习 · 统计学 2024-03-05 Cheng Zhen , Nischal Aryal , Arash Termehchy , Alireza Aghasi , Amandeep Singh Chabada

This paper develops a unified identification framework for counterfactual analysis in incomplete models characterized by support and moment restrictions. I demonstrate that identifying structural parameters and conducting counterfactual…

计量经济学 · 经济学 2026-03-10 Lixiong Li

Detecting and classifying abnormal system states is critical for condition monitoring, but supervised methods often fall short due to the rarity of anomalies and the lack of labeled data. Therefore, clustering is often used to group similar…

机器学习 · 计算机科学 2025-01-14 Ferdinand Rewicki , Joachim Denzler , Julia Niebling

Difference-in-differences (DiD) identification relies mainly on a parallel trends assumption about untreated potential outcomes. Researchers often relax this assumption by assuming conditional parallel trends within units with the same…

统计方法学 · 统计学 2026-05-05 Daniela Rodrigues , Laura A. Hatfield

Despite the popularity of Collaborative Filtering (CF), CF-based methods are haunted by the \textit{cold-start} problem, which has a significantly negative impact on users' experiences with Recommender Systems (RS). In this paper, to…

信息检索 · 计算机科学 2018-09-03 Lei Zheng , Chun-Ta Lu , Fei Jiang , Jiawei Zhang , Philip S. Yu

This paper develops an incremental learning algorithm based on quadratic inference function (QIF) to analyze streaming datasets with correlated outcomes such as longitudinal data and clustered data. We propose a renewable QIF (RenewQIF)…

统计方法学 · 统计学 2021-07-01 Lan Luo , Ling Zhou , Peter X. -K. Song

Modern datasets often contain high-dimensional features exhibiting complex dependencies. To effectively analyze such data, dimensionality reduction methods rely on estimating the dataset's intrinsic dimension (id) as a measure of its…

机器学习 · 计算机科学 2025-10-21 Dhruv Gupta , Aditya Nagarsekar , Vraj Shah , Sujith Thomas

We present a methodology for model evaluation and selection where the sampling mechanism violates the i.i.d. assumption. Our methodology involves a formulation of the bias between the standard Cross-Validation (CV) estimator and the mean…

统计方法学 · 统计学 2025-03-14 Oren Yuval , Saharon Rosset

Deepfake detection refers to detecting artificially generated or edited faces in images or videos, which plays an essential role in visual information security. Despite promising progress in recent years, Deepfake detection remains a…

计算机视觉与模式识别 · 计算机科学 2023-12-11 Chunlei Peng , Huiqing Guo , Decheng Liu , Nannan Wang , Ruimin Hu , Xinbo Gao

In many applications, training machine learning models involves using large amounts of human-annotated data. Obtaining precise labels for the data is expensive. Instead, training with weak supervision provides a low-cost alternative. We…

机器学习 · 计算机科学 2022-02-09 Chidubem Arachie , Bert Huang

In high-dimensional regression, feature selection methods, such as sequential feature selection (SeqFS), are commonly used to identify relevant features. When data is limited, domain adaptation (DA) becomes crucial for transferring…

机器学习 · 统计学 2025-01-20 Duong Tan Loc , Nguyen Thang Loi , Vo Nguyen Le Duy

The vast majority of stochastic simulation models are imperfect in that they fail to exactly emulate real system dynamics. The inexactness of the simulation model, or model discrepancy, can impact the predictive accuracy and usefulness of…

统计方法学 · 统计学 2017-07-21 Matthew Plumlee , Henry Lam

Pairwise Causal Discovery is the task of determining causal, anticausal, confounded or independence relationships from pairs of variables. Over the last few years, this challenging task has promoted not only the discovery of novel machine…

机器学习 · 计算机科学 2022-12-05 Felipe Giori , Flavio Figueiredo

Collaborative filtering (CF), as a standard method for recommendation with implicit feedback, tackles a semi-supervised learning problem where most interaction data are unobserved. Such a nature makes existing approaches highly rely on…

信息检索 · 计算机科学 2022-07-04 Chenxiao Yang , Qitian Wu , Jipeng Jin , Xiaofeng Gao , Junwei Pan , Guihai Chen

The focus of this paper is on intrinsic methods to detect overfitting. By intrinsic methods, we mean methods that rely only on the model and the training data, as opposed to traditional methods (we call them extrinsic methods) that rely on…

机器学习 · 计算机科学 2020-08-07 Satrajit Chatterjee , Alan Mishchenko

Existing full-reference image quality assessment (FR-IQA) methods often fail to capture the complex causal mechanisms that underlie human perceptual responses to image distortions, limiting their ability to generalize across diverse…

计算机视觉与模式识别 · 计算机科学 2024-12-24 Wenhao Shen , Mingliang Zhou , Yu Chen , Xuekai Wei , Jun Luo , Huayan Pu , Weijia Jia

Cross-correlation function (CCF) has become the standard tool for extraction of radial-velocity and broadening information from high resolution spectra. It permits integration of information which is common to many spectral lines into one…

天体物理学 · 物理学 2007-05-23 Slavek Rucinski

Classification with Costly Features (CwCF) is a classification problem that includes the cost of features in the optimization criteria. Individually for each sample, its features are sequentially acquired to maximize accuracy while…

机器学习 · 计算机科学 2024-07-17 Jaromír Janisch , Tomáš Pevný , Viliam Lisý