activity
20222026
most citedTimesURL: Self-supervised Contrastive Learning for Universal Time Series Representation Learning

4 citations · 7 across the 13 of their papers we have counts for

collaborators

14 papers

cs.LG2026

MiMuon: Mixed Muon Optimizer with Improved Generalization for Large Models

Feihu Huang, Yuning Luo, Songcan Chen

Matrix-structured parameters frequently appear in many artificial intelligence models such as large language models. More recently, an efficient Muon optimizer is designed for matr…

cs.LG2026

CLion: Efficient Cautious Lion Optimizer with Enhanced Generalization

Feihu Huang, Guanyi Zhang, Songcan Chen

Lion optimizer is a popular learning-based optimization algorithm in machine learning, which shows impressive performance in training many deep learning models. Although convergenc…

cs.LG2026

HomeAdam: Adam and AdamW Algorithms Sometimes Go Home to Obtain Better Provable Generalization

Feihu Huang, Guanyi Zhang, Songcan Chen

Adam and AdamW are a class of default optimizers for training deep learning models in machine learning. These adaptive algorithms converge faster but generalize worse compared to S…

cs.LG2026

Negatives-Dominant Contrastive Learning for Generalization in Imbalanced Domains

Meng Cao, Jiexi Liu, Songcan Chen

Imbalanced Domain Generalization (IDG) focuses on mitigating both domain and label shifts, both of which fundamentally shape the model's decision boundaries, particularly under het…

cs.CV2025

The Finer the Better: Towards Granular-aware Open-set Domain Generalization

Yunyun Wang, Zheng Duan, Xinyue Liao +2

Open-Set Domain Generalization (OSDG) tackles the realistic scenario where deployed models encounter both domain shifts and novel object categories. Despite impressive progress wit…

cs.LG2025

Beyond Observations: Reconstruction Error-Guided Irregularly Sampled Time Series Representation Learning

Jiexi Liu, Meng Cao, Songcan Chen

Irregularly sampled time series (ISTS), characterized by non-uniform time intervals with natural missingness, are prevalent in real-world applications. Existing approaches for ISTS…

cs.LG2025

LiMuon: Light and Fast Muon Optimizer for Large Models

Feihu Huang, Yuning Luo, Songcan Chen

Large models recently are widely applied in machine learning, so efficient training of large models has received widespread attention. More recently, the useful Muon optimizer is s…

cs.LG2024

TimeCHEAT: A Channel Harmony Strategy for Irregularly Sampled Multivariate Time Series Analysis

Jiexi Liu, Meng Cao, Songcan Chen

Irregularly sampled multivariate time series (ISMTS) are prevalent in reality. Due to their non-uniform intervals between successive observations and varying sampling rates among s…

cs.CV2024

Guidance Not Obstruction: A Conjugate Consistent Enhanced Strategy for Domain Generalization

Meng Cao, Songcan Chen

Domain generalization addresses domain shift in real-world applications. Most approaches adopt a domain angle, seeking invariant representation across domains by aligning their mar…

cs.LG2024

MuSiCNet: A Gradual Coarse-to-Fine Framework for Irregularly Sampled Multivariate Time Series Analysis

Jiexi Liu, Meng Cao, Songcan Chen

Irregularly sampled multivariate time series (ISMTS) are prevalent in reality. Most existing methods treat ISMTS as synchronized regularly sampled time series with missing values,…

cs.LG2024★ 1 cited

A Survey on Incomplete Multi-label Learning: Recent Advances and Future Trends

Xiang Li, Jiexi Liu, Xinrui Wang +1

In reality, data often exhibit associations with multiple labels, making multi-label learning (MLL) become a prominent research topic. The last two decades have witnessed the succe…

cs.LG2023★ 4 cited

TimesURL: Self-supervised Contrastive Learning for Universal Time Series Representation Learning

Jiexi Liu, Songcan Chen

Learning universal time series representations applicable to various types of downstream tasks is challenging but valuable in real applications. Recently, researchers have attempte…

math.OC2023★ 2 cited

Enhanced Adaptive Gradient Algorithms for Nonconvex-PL Minimax Optimization

Feihu Huang, Chunyu Xuan, Xinrui Wang +2

Minimax optimization recently is widely applied in many machine learning tasks such as generative adversarial networks, robust learning and reinforcement learning. In the paper, we…

cs.LG2022

Adaptive Federated Minimax Optimization with Lower Complexities

Feihu Huang, Xinrui Wang, Junyi Li +1

Federated learning is a popular distributed and privacy-preserving learning paradigm in machine learning. Recently, some federated learning algorithms have been proposed to solve t…