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Machine learning-based Deepfake detection models have achieved impressive results on benchmark datasets, yet their performance often deteriorates significantly when evaluated on out-of-distribution data. In this work, we investigate an…

计算机视觉与模式识别 · 计算机科学 2025-07-09 Haroon Wahab , Hassan Ugail , Lujain Jaleel

Training AI models that generalize across tasks and domains has long been among the open problems driving AI research. The emergence of Foundation Models made it easier to obtain expert models for a given task, but the heterogeneity of data…

机器学习 · 计算机科学 2024-05-10 Hongyi Wang , Felipe Maia Polo , Yuekai Sun , Souvik Kundu , Eric Xing , Mikhail Yurochkin

Sparse functional data frequently arise in real-world applications, posing significant challenges for accurate classification. To address this, we propose a novel classification method that integrates functional principal component analysis…

统计计算 · 统计学 2025-03-17 Ahmad Talafha

Measuring sentence semantic similarity using pre-trained language models such as BERT generally yields unsatisfactory zero-shot performance, and one main reason is ineffective token aggregation methods such as mean pooling. In this paper,…

计算与语言 · 计算机科学 2020-10-23 M. Li , H. Bai , L. Tan , K. Xiong , M. Li , J. Lin

Data imputation, the process of filling in missing feature elements for incomplete data sets, plays a crucial role in data-driven learning. A fundamental belief is that data imputation is helpful for learning performance, and it follows…

机器学习 · 计算机科学 2025-09-30 Ruikai Yang , Fan He , Mingzhen He , Kaijie Wang , Xiaolin Huang

Data-driven approaches such as deep learning can result in predictive models for material properties with exceptional accuracy and efficiency. However, in many applications, data is sparse, severely limiting their accuracy and…

机器学习 · 计算机科学 2025-10-29 Robert J Appleton , Brian C Barnes , Alejandro Strachan

Traditionally, in supervised machine learning, (a significant) part of the available data (usually 50% to 80%) is used for training and the rest for validation. In many problems, however, the data is highly imbalanced in regard to different…

机器学习 · 计算机科学 2020-04-21 Xiaowei Gu , Plamen P Angelov , Eduardo Almeida Soares

The Bag-of-Words (BoW) representation is well applied to recent state-of-the-art image retrieval works. Typically, multiple vocabularies are generated to correct quantization artifacts and improve recall. However, this routine is corrupted…

计算机视觉与模式识别 · 计算机科学 2014-04-15 Liang Zheng , Shengjin Wang , Wengang Zhou , Qi Tian

Product attribute value extraction is a pivotal component in Natural Language Processing (NLP) and the contemporary e-commerce industry. The provision of precise product attribute values is fundamental in ensuring high-quality…

信息检索 · 计算机科学 2024-06-21 Chenhao Fang , Xiaohan Li , Zezhong Fan , Jianpeng Xu , Kaushiki Nag , Evren Korpeoglu , Sushant Kumar , Kannan Achan

Many existing data mining algorithms use feature values directly in their model, making them sensitive to units/scales used to measure/represent data. Pre-processing of data based on rank transformation has been suggested as a potential…

机器学习 · 计算机科学 2021-11-09 Arbind Agrahari Baniya , Sunil Aryal , Santosh KC

Training large language models with data collected from various domains can improve their performance on downstream tasks. However, given a fixed training budget, the sampling proportions of these different domains significantly impact the…

计算与语言 · 计算机科学 2025-05-29 Yajiao Liu , Congliang Chen , Junchi Yang , Ruoyu Sun

Dataset condensation aims at reducing the network training effort through condensing a cumbersome training set into a compact synthetic one. State-of-the-art approaches largely rely on learning the synthetic data by matching the gradients…

计算机视觉与模式识别 · 计算机科学 2022-03-29 Kai Wang , Bo Zhao , Xiangyu Peng , Zheng Zhu , Shuo Yang , Shuo Wang , Guan Huang , Hakan Bilen , Xinchao Wang , Yang You

In this paper a variant of the classical hierarchical cluster analysis is reported. This agglomerative (bottom-up) cluster technique is referred to as the Adaptive Mean-Linkage Algorithm. It can be interpreted as a linkage algorithm where…

统计方法学 · 统计学 2015-02-10 H. M. de Oliveira

Feature selection methods have an important role on the readability of data and the reduction of complexity of learning algorithms. In recent years, a variety of efforts are investigated on feature selection problems based on unsupervised…

机器学习 · 计算机科学 2019-12-12 Mohsen Ghassemi Parsa , Hadi Zare , Mehdi Ghatee

In theory, the probabilistic linkage method provides two distinct advantages over non-probabilistic methods, including minimal rates of linkage error and accurate measures of these rates for data users. However, implementations can fall…

统计方法学 · 统计学 2019-11-06 Abel Dasylva , Arthur Goussanou , David Ajavon , Hanan Abousaleh

Many applications of machine learning involve the analysis of large data frames-matrices collecting heterogeneous measurements (binary, numerical, counts, etc.) across samples-with missing values. Low-rank models, as studied by Udell et al.…

机器学习 · 统计学 2018-12-21 Geneviève Robin , Hoi-To Wai , Julie Josse , Olga Klopp , Éric Moulines

In the domain of intelligent transportation systems (ITS), collaborative perception has emerged as a promising approach to overcome the limitations of individual perception by enabling multiple agents to exchange information, thus enhancing…

多智能体系统 · 计算机科学 2023-05-04 Ahmed N. Ahmed , Siegfried Mercelis , Ali Anwar

Attributes skew hinders the current federated learning (FL) frameworks from consistent optimization directions among the clients, which inevitably leads to performance reduction and unstable convergence. The core problems lie in that: 1)…

机器学习 · 计算机科学 2022-06-15 Zhengquan Luo , Yunlong Wang , Zilei Wang , Zhenan Sun , Tieniu Tan

A method for representing the digest information of each dataset is proposed, oriented to the aid of innovative thoughts and the communication of data users who attempt to create valuable products, services, and business models using or…

数据库 · 计算机科学 2022-08-09 Yukio Ohsawa , Kaira Sekiguchi , Tomohide Maekawa , Hiroki Yamaguchi , Son Yeon Hyuk , Sae Kondo

Causal inference is made challenging by confounding, selection bias, and other complications. A common approach to addressing these difficulties is the inclusion of auxiliary data on the superpopulation of interest. Such data may measure a…

统计方法学 · 统计学 2024-04-16 Jaron J. R. Lee , AmirEmad Ghassami , Ilya Shpitser