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math.OC2026
Bi-ZOL: Bilevel Zeroth-Order Learning with Nonsmooth Responses
Zhisen Jiang, Saverio Bolognani
This paper studies lower-level-constrained bilevel optimization in a response-oracle setting, where lower-level model information is unavailable and the induced response mapping is…
math.OC2025
Voltage Support Procurement in Transmission Grids: Incentive Design via Online Bilevel Games
Zhisen Jiang, Saverio Bolognani, Giuseppe Belgioioso
The integration of distributed energy resources into transmission grid operations presents a complex challenge, particularly in the context of reactive power procurement for voltag…