activity
20122026
most citedOptimizing F-measure: A Tale of Two Approaches

85 citations · 86 across the 6 of their papers we have counts for

collaborators

7 papers

cs.LG2026

Rethinking Molecular Text Representations for LLMs: An Empirical Study

Arun Raja, Garrett M. Morris, Kian Ming A. Chai

Large language models (LLMs) are increasingly used for molecular tasks, but it remains unclear which molecular representation to use. We present a systematic benchmark, MolRepBench…

cs.LG2026

Variational Learning of Fractional Posteriors

Kian Ming A. Chai, Edwin V. Bonilla

We introduce a novel one-parameter variational objective that lower bounds the data evidence and enables the estimation of approximate fractional posteriors. We extend this framewo…

stat.ML2025

Thompson Sampling in Function Spaces via Neural Operators

Rafael Oliveira, Xuesong Wang, Kian Ming A. Chai +1

We propose an extension of Thompson sampling to optimization problems over function spaces where the objective is a known functional of an unknown operator's output. We assume that…

cs.CV2025

Brain-Inspired Stochastic Joint Embedding Representation Learning

Makoto Yamada, Kian Ming A. Chai, Ayoub Rhim +3

Representation learning is one of the key research topics in machine learning, and the framework of self-supervised learning (SSL) has revolutionized computer vision. However, thes…

cs.LO2018★ 1 cited

BOSPHORUS: Bridging ANF and CNF Solvers

Davin Choo, Mate Soos, Kian Ming A. Chai +1

Algebraic Normal Form (ANF) and Conjunctive Normal Form (CNF) are commonly used to encode problems in Boolean algebra. ANFs are typically solved via Gr"obner basis algorithms, ofte…

cs.LG2012★ 85 cited

Optimizing F-measure: A Tale of Two Approaches

Ye Nan, Kian Ming Chai, Wee Sun Lee +1

F-measures are popular performance metrics, particularly for tasks with imbalanced data sets. Algorithms for learning to maximize F-measures follow two approaches: the empirical ut…

cs.LG2012

A Split-Merge Framework for Comparing Clusterings

Qiaoliang Xiang, Qi Mao, Kian Ming Chai +3

Clustering evaluation measures are frequently used to evaluate the performance of algorithms. However, most measures are not properly normalized and ignore some information in the…