@article{thescalinglawofevaluationfailurewhysimpl, title = {The Scaling Law of Evaluation Failure: Why Simple Averaging Collapses Under Data Sparsity and Item Difficulty Gaps, and How Item Response Theory Recovers Ground Truth Across Domains}, author = {Jung Min Kang}, year = {2026}, eprint = {2605.11205}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2605.11205}, }