# Fingerprint Dive into the research topics where Han Liu is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

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### Mathematics

High-dimensional

Graphical Models

Estimator

Lasso

Rate of Convergence

Gaussian Model

Principal Component Analysis

Correlation Matrix

Regularization

Higher Dimensions

Graph in graph theory

Sparsity

Testing

Minimax

Coordinate Descent

Method of multipliers

Alternating Direction Method

Semiparametric Model

Copula

Genomics

Latent Variable Models

Canonical Correlation Analysis

Confidence Region

Hypothesis Testing

Convex Minimization

Thresholding

Optimization Algorithm

Iteration

Sample Size

Penalty

Regression

Optimization

Kendall's tau

Scale Invariant

Recovery

Multiple Testing

Multi-task Learning

Parameter Estimation

Variable Selection

Test Statistic

Estimate

Mining

Nonconvex Optimization

Covariance matrix

Numerical Results

Undirected Graph

Sparse matrix

Elastic Net

Compressed Sensing

Covariance Matrix Estimation

### Engineering & Materials Science

Parameter estimation

Principal component analysis

Discriminant analysis

Recovery

Linear regression

XML

Gaussian distribution

Experiments

Mass spectrometry

Compressed sensing

Association rules

Reinforcement learning

Convex optimization

Feature extraction

Brain

Learning systems

Learning algorithms

Miners

Statistics

Genes

Proteins

Global optimization

Time series

Semantics

Supervised learning

Independent component analysis

Peptides

Calibration

Collision avoidance

Motion planning

Covariance matrix

Factorization

Eigenvalues and eigenfunctions

Logistics

Microarrays

Approximation algorithms

Computational efficiency

Labels

Constrained optimization

Robotics

Gene expression

Tuning

Artificial intelligence

Singular value decomposition

Probability density function

Tissue

Computer simulation

Hidden Markov models

Linear programming

Signal processing

### Business & Economics

Graphical models