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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

Guo-Dong Liu

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Preprint Oct 2026

Efficient conformal prediction intervals for time series: Online PID-Expert aggregation

For a given point forecaster, proportional-integral-derivative (PID) calibration configurations can attain similar overall coverage yet produce different interval widths. We introduce PID-Expert, an online aggregation method for improving the efficiency of conformal prediction intervals for time series. PID-Expert comb...

Guo-Dong Liu, Yan-Fei Kang, Ren-Zhe Miao et al. · 1 citation
Open access Oct 2026

Semantic Data Governance and Collaborative Architecture for LLM-Based Natural Language Analytics in Urban Rail Transit

Urban rail transit data are distributed across heterogeneous operational systems, where inconsistent semantics and fragmented metric definitions complicate the controlled use of large language models (LLMs) for natural language analytics. This study proposes a semantic data governance and collaborative analytics archit...

Shi-Qi Xiong, Guo-Dong Liu · 0 citations

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