Search Results for author: Lucy Xia

Found 4 papers, 0 papers with code

Intentional Control of Type I Error over Unconscious Data Distortion: a Neyman-Pearson Approach to Text Classification

no code implementations7 Feb 2018 Lucy Xia, Richard Zhao, Yanhui Wu, Xin Tong

To deal with inestimable data distortion, we propose the use of the Neyman-Pearson (NP) classification paradigm, which minimizes type II error under a user-specified type I error constraint.

General Classification text-classification +1

Neyman-Pearson classification: parametrics and sample size requirement

no code implementations7 Feb 2018 Xin Tong, Lucy Xia, Jiacheng Wang, Yang Feng

In this work, we employ the parametric linear discriminant analysis (LDA) model and propose a new parametric thresholding algorithm, which does not need the minimum sample size requirements on class $0$ observations and thus is suitable for small sample applications such as rare disease diagnosis.

Binary Classification Classification +3

A Projection Based Conditional Dependence Measure with Applications to High-dimensional Undirected Graphical Models

no code implementations7 Jan 2015 Jianqing Fan, Yang Feng, Lucy Xia

Measuring conditional dependence is an important topic in statistics with broad applications including graphical models.

Aggregation of Affine Estimators

no code implementations12 Nov 2013 Dong Dai, Philippe Rigollet, Lucy Xia, Tong Zhang

While results indicate that the same aggregation scheme may not satisfy sharp oracle inequalities with high probability, we prove that a weaker notion of oracle inequality for EW that holds with high probability.

Model Selection

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