2 papers
stat.ME2025
Semi-supervised Vertex Hunting, with Applications in Network and Text Analysis
Yicong Jiang, Zheng Tracy Ke
Vertex hunting (VH) is the task of estimating a simplex from noisy data points and has many applications in areas such as network and text analysis. We introduce a new variant, sem…
math.ST2024
Entry-Wise Eigenvector Analysis and Improved Rates for Topic Modeling on Short Documents
Zheng Tracy Ke, Jingming Wang
Topic modeling is a widely utilized tool in text analysis. We investigate the optimal rate for estimating a topic model. Specifically, we consider a scenario with documents, a…