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Domain generalization (DG) aims to learn a robust model from source domains that generalize well on unseen target domains. Recent studies focus on generating novel domain samples or features to diversify distributions complementary to…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Chenming Li , Daoan Zhang , Wenjian Huang , Jianguo Zhang

The widespread adoption of wearable sensors has the potential to provide massive and heterogeneous time series data, driving the use of Artificial Intelligence in human sensing applications. However, data collection remains limited due to…

Machine Learning · Computer Science 2025-12-04 Flavio Di Martino , Franca Delmastro

Wearable Human Activity Recognition (HAR) still lacks a representation that is both explicit and adaptable. Handcrafted time-series features (TSFs) capture meaningful motion statistics and remain competitive on standard benchmarks, but they…

Human-Computer Interaction · Computer Science 2026-04-29 Ruijie Yao , Chenhang Li , Danyang Zhuo , Tingjun Chen , Xiaoyue Ni

Diffusion models have achieved remarkable success in text-to-image synthesis, largely attributed to the use of classifier-free guidance (CFG), which enables high-quality, condition-aligned image generation. CFG combines the conditional…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Mingi Kwon , Shin seong Kim , Jaeseok Jeong. Yi Ting Hsiao , Youngjung Uh

Classifier-Free Guidance (CFG) is a critical technique for enhancing the sample quality of visual generative models. However, in autoregressive (AR) multi-modal generation, CFG introduces design inconsistencies between language and visual…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Huayu Chen , Hang Su , Peize Sun , Jun Zhu

The past decades witness the significant advancements in time series forecasting (TSF) across various real-world domains, including e-commerce and disease spread prediction. However, TSF is usually constrained by the uncertainty dilemma of…

Machine Learning · Computer Science 2025-05-21 Yingwei Zhang , Ke Bu , Zhuoran Zhuang , Tao Xie , Yao Yu , Dong Li , Yang Guo , Detao Lv

Time series generation (TSG) synthesizes realistic sequences and has achieved remarkable success. Among TSG, conditional models generate sequences given observed covariates, however, such models learn observational correlations without…

Machine Learning · Computer Science 2026-05-15 Yutong Xia , Chang Xu , Yuxuan Liang , Li Zhao , Qingsong Wen , Roger Zimmermann , Jiang Bian

Feature transformation involves generating a new set of features from the original dataset to enhance the data's utility. In certain domains like material performance screening, dimensionality is large and collecting labels is expensive and…

Machine Learning · Computer Science 2025-05-01 Nanxu Gong , Xinyuan Wang , Wangyang Ying , Haoyue Bai , Sixun Dong , Haifeng Chen , Yanjie Fu

Classifier-Free Guidance (CFG) significantly enhances controllability in generative models by interpolating conditional and unconditional predictions. However, standard CFG often employs a static unconditional input, which can be suboptimal…

Computation and Language · Computer Science 2025-05-27 Pengxiang Li , Shilin Yan , Joey Tsai , Renrui Zhang , Ruichuan An , Ziyu Guo , Xiaowei Gao

Temporal feature extraction is an important issue in video-based action recognition. Optical flow is a popular method to extract temporal feature, which produces excellent performance thanks to its capacity of capturing pixel-level…

Computer Vision and Pattern Recognition · Computer Science 2020-05-07 Yuecong Xu , Jianfei Yang , Kezhi Mao , Jianxiong Yin , Simon See

Time Series Generation (TSG) has emerged as a pivotal technique in synthesizing data that accurately mirrors real-world time series, becoming indispensable in numerous applications. Despite significant advancements in TSG, its efficacy…

Machine Learning · Computer Science 2024-03-07 Yifan Bao , Yihao Ang , Qiang Huang , Anthony K. H. Tung , Zhiyong Huang

Dynamic recommendation systems aim to provide personalized suggestions by modeling temporal user-item interactions across time-series behavioral data. Recent studies have leveraged pre-trained dynamic graph neural networks (GNNs) to learn…

Information Retrieval · Computer Science 2025-11-18 Zhen Tao , Xinke Jiang , Qingshuai Feng , Haoyu Zhang , Lun Du , Yuchen Fang , Hao Miao , Bangquan Xie , Qingqiang Sun

Autoregressive (AR) models have emerged as powerful tools for image generation by modeling images as sequences of discrete tokens. While Classifier-Free Guidance (CFG) has been adopted to improve conditional generation, its application in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Dongli Xu , Aleksei Tiulpin , Matthew B. Blaschko

Classifier-free guidance (CFG) is a cornerstone of text-to-image diffusion models, yet its effectiveness is limited by the use of static guidance scales. This "one-size-fits-all" approach fails to adapt to the diverse requirements of…

Feature Transformation (FT) crafts new features from original ones via mathematical operations to enhance dataset expressiveness for downstream models. However, existing FT methods exhibit critical limitations: discrete search struggles…

Machine Learning · Computer Science 2025-05-22 Nanxu Gong , Zijun Li , Sixun Dong , Haoyue Bai , Wangyang Ying , Xinyuan Wang , Yanjie Fu

Multi-task reinforcement learning endeavors to efficiently leverage shared information across various tasks, facilitating the simultaneous learning of multiple tasks. Existing approaches primarily focus on parameter sharing with carefully…

Machine Learning · Computer Science 2025-07-10 Jinmin He , Kai Li , Yifan Zang , Haobo Fu , Qiang Fu , Junliang Xing , Jian Cheng

Reliable evaluation of anomaly detection methods in multivariate time series remains an open challenge, largely due to the limitations of existing benchmark datasets. Current resources often lack fine-grained anomaly annotations, do not…

Artificial Intelligence · Computer Science 2026-04-17 Pierre Lotte , André Péninou , Olivier Teste

Although deep learning-based algorithms have demonstrated excellent performance in automated emotion recognition via electroencephalogram (EEG) signals, variations across brain signal patterns of individuals can diminish the model's…

Machine Learning · Computer Science 2024-01-05 Shadi Sartipi , Mujdat Cetin

To learn camera-view invariant features for person Re-IDentification (Re-ID), the cross-camera image pairs of each person play an important role. However, such cross-view training samples could be unavailable under the ISolated Camera…

Computer Vision and Pattern Recognition · Computer Science 2022-04-05 Chao Wu , Wenhang Ge , Ancong Wu , Xiaobin Chang

Software vulnerability detection can be formulated as a binary classification problem that determines whether a given code snippet contains security defects. Existing multimodal methods typically fuse Natural Code Sequence (NCS)…

Software Engineering · Computer Science 2026-04-24 Yun Bian , Yi Chen , HaiQuan Wang , ShiHao Li , Zhe Cui