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cs.LG2026
A Closed-Form Upper Bound for Admissible Learning-Rate Steps in Belief-Space Dynamics
Zixi Li, Youzhen Li
Learning-rate steps are usually treated as hyperparameters. This paper isolates a local beliefspace calculation: when an update is modeled as a projected forward step on the probab…
cs.LG2025
Reasoning: From Reflection to Solution
Zixi Li
What is reasoning? This question has driven centuries of philosophical inquiry, from Aristotle's syllogisms to modern computational complexity theory. In the age of large language…
cs.LG2025
Listwise Direct Preference Optimization with Multi-Dimensional Preference Mixing
Yuhui Sun, Xiyao Wang, Zixi Li +6
Recent alignment methods based on Direct Preference Optimization (DPO) reformulate preference learning as supervised optimization over pairwise comparisons, offering improved effic…