@article{bilevelgraphstructurelearningrevisitedin, title = {Bilevel Graph Structure Learning, Revisited: Inner-Channel Origins of the Reported Gain}, author = {Minkyoung Kim and Beakcheol Jang}, year = {2026}, eprint = {2605.07577}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2605.07577}, }