Search Results for author: Keli Zhang

Found 13 papers, 4 papers with code

Learning by Doing: An Online Causal Reinforcement Learning Framework with Causal-Aware Policy

no code implementations7 Feb 2024 Ruichu Cai, Siyang Huang, Jie Qiao, Wei Chen, Yan Zeng, Keli Zhang, Fuchun Sun, Yang Yu, Zhifeng Hao

As a key component to intuitive cognition and reasoning solutions in human intelligence, causal knowledge provides great potential for reinforcement learning (RL) agents' interpretability towards decision-making by helping reduce the searching space.

Decision Making Reinforcement Learning (RL)

Hierarchical Topological Ordering with Conditional Independence Test for Limited Time Series

no code implementations16 Aug 2023 Anpeng Wu, Haoxuan Li, Kun Kuang, Keli Zhang, Fei Wu

Learning directed acyclic graphs (DAGs) to identify causal relations underlying observational data is crucial but also poses significant challenges.

Time Series

Quantitatively Measuring and Contrastively Exploring Heterogeneity for Domain Generalization

no code implementations25 May 2023 Yunze Tong, Junkun Yuan, Min Zhang, Didi Zhu, Keli Zhang, Fei Wu, Kun Kuang

With contrastive learning, we propose a learning potential-guided metric for domain heterogeneity by promoting learning variant features.

Contrastive Learning Domain Generalization

Structural Hawkes Processes for Learning Causal Structure from Discrete-Time Event Sequences

1 code implementation10 May 2023 Jie Qiao, Ruichu Cai, Siyu Wu, Yu Xiang, Keli Zhang, Zhifeng Hao

Learning causal structure among event types from discrete-time event sequences is a particularly important but challenging task.

Time-Series Domain Adaptation via Sparse Associative Structure Alignment: Learning Invariance and Variance

no code implementations7 May 2022 Zijian Li, Ruichu Cai, Jiawei Chen, Yuguan Yan, Wei Chen, Keli Zhang, Junjian Ye

Based on this inspiration, we investigate the domain-invariant unweighted sparse associative structures and the domain-variant strengths of the structures.

Time Series Time Series Analysis +2

THP: Topological Hawkes Processes for Learning Causal Structure on Event Sequences

no code implementations23 May 2021 Ruichu Cai, Siyu Wu, Jie Qiao, Zhifeng Hao, Keli Zhang, Xi Zhang

We further propose a causal structure learning method on THP in a likelihood framework.

An Influence-based Approach for Root Cause Alarm Discovery in Telecom Networks

1 code implementation7 May 2021 Keli Zhang, Marcus Kalander, Min Zhou, Xi Zhang, Junjian Ye

Alarm root cause analysis is a significant component in the day-to-day telecommunication network maintenance, and it is critical for efficient and accurate fault localization and failure recovery.

Causal Inference Fault localization +2

Time Series Domain Adaptation via Sparse Associative Structure Alignment

no code implementations22 Dec 2020 Ruichu Cai, Jiawei Chen, Zijian Li, Wei Chen, Keli Zhang, Junjian Ye, Zhuozhang Li, Xiaoyan Yang, Zhenjie Zhang

To reduce the difficulty in the discovery of causal structure, we relax it to the sparse associative structure and propose a novel sparse associative structure alignment model for domain adaptation.

Domain Adaptation Time Series +1

Mixed Set Domain Adaptation

no code implementations4 Nov 2020 Sitong Mao, Keli Zhang, Fu-Lai Chung

Under the settings of MSDA, different categories of the source dataset are not all collected from the same domain(s).

Domain Adaptation

Cannot find the paper you are looking for? You can Submit a new open access paper.