arXiv Machine Learning

Isotonic Bradley-Terry Model for Paired Comparison Data

arXiv:2608. 02081v1 Announce Type: new Abstract: In this paper, we study prediction problems for paired comparison data, for example, predicting the win probability between two unmatched players and ranking all the players according to the order of their strengths by using win probability data between two matched players.

arXiv AI
Jun 8

Bounded-Abstention Pairwise Learning to Rank

arXiv:2505. 23437v2 Announce Type: replace-cross Abstract: Ranking systems influence decision-making in high-stakes domains like health, education, and employment, where they can have substantial economic and social impacts.

By Antonio Ferrara, Andrea Pugnana, Francesco Bonchi, Salvatore Ruggieri
arXiv Machine Learning
Sep 10

Forecasting the Winner of a Live Tennis Match

arXiv:2609.07617v1 Announce Type: new Abstract: With the rise of live sports betting in recent years, tennis forecasting has expanded from pre-match prediction to models that update win probabilities...

By Charles Xie, Aneesh Muppidi
arXiv Machine Learning
Aug 27

Learning Mixtures of Plackett-Luce Models for Multi-Objective Alignment

The paper introduces MoPLEx, an expectation‑maximization algorithm for learning mixtures of Plackett‑Luce models from multi‑way ranking data. It augments rankings with synthetic responses from a base language model and uses a gradient‑based estimation to reduce inference cost, enabling efficient fitting of large‑scale models. Experiments show the method achieves low probability estimation error and improves clustering and ranking accuracy by 43.7% and 15.2% over baselines.

By Dongyue Li, Ziniu Zhang, Lu Wang, Hongyang R. Zhang