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202601
System overview of the QoEReasoner diagnostic framework
System overview from the paper.
First authorSubmitted · CCF AAI for NetworksAgentic diagnosis

QoEReasoner: An Agentic Reasoning Framework for Automated and Explainable QoE Diagnosis in RANs

Q. Li, H. Chen, S. Dai, Z. Li, Z. Hu, X. Li, G. Zhu, Q. Shi

Submitted to IEEE Journal on Selected Areas in Communications (JSAC); arXiv preprint

QoEReasoner is an end-to-end agentic system for explainable RAN diagnosis. Deterministic tools convert KPIs into evidence, a domain knowledge base constrains causal propagation, and a stateful planner coordinates anomaly detection and root localization.

202602
Three-stage overview of the DK-Root framework
Method overview from the paper.
First authorCCF AAI for NetworksRoot-cause analysis

DK-Root: A Joint Data-and-Knowledge-Driven Framework for Root Cause Analysis of QoE Degradations in Mobile Networks

Q. Li, H. Chen, J. Li, S. Chai, X. Li, Y. Hou, X. Shao, F. Li, K. Han, G. Zhu

IEEE Transactions on Networking

DK-Root combines weak operational rules with scarce expert labels for mobile-network QoE diagnosis. Contrastive pretraining mitigates rule noise, conditional diffusion supplies task-faithful augmentation, and expert-guided fine-tuning sharpens the final classifier.

202603
Overview of the two-stage SemiRoot framework
Framework overview from the paper.
First authorAI for NetworksSemi-supervised learning

SemiRoot: A Semi-Supervised Deep Learning Framework for Root-Cause Analysis of QoE Degradations in Mobile Networks

Q. Li, H. Chen, S. Fu, Z. Zou, G. Zhu

IEEE ICC Workshops

SemiRoot addresses label scarcity through a two-stage semi-supervised framework. Rule-guided contrastive learning structures the representation space before a small set of expert labels calibrates the decision boundaries.

202306
Flow chart of the enhanced Morris framework
Figure from the paper.
First authorUncertainty QuantificationSensitivity analysis

An enhanced framework for Morris by combining with a sequential sampling strategy

Q. Li, H. Huang, S. Xie, L. Chen, Z. Liu

International Journal for Uncertainty Quantification

A sequential Morris framework reduces the cost of sample-based sensitivity analysis. Progressive Latin hypercube sampling preserves space-filling properties while an adaptive stopping rule avoids unnecessary model evaluations.

202307
Construction process of the data-driven PC-Kriging method
Figure from the paper.
Uncertainty QuantificationSurrogate modeling

A data-driven PC-Kriging method considering correlated variables

Y. Li, Q. Li, H. Huang

International Conference on Algorithms, Computing and Artificial Intelligence

This paper develops a data-driven polynomial-chaos Kriging method for systems with correlated inputs. Adaptive Lasso selects a compact polynomial basis before it is embedded in a Kriging model.