Search Results for author: Meimei Liu

Found 10 papers, 1 papers with code

Motion-Invariant Variational Auto-Encoding of Brain Structural Connectomes

1 code implementation8 Dec 2022 Yizi Zhang, Meimei Liu, Zhengwu Zhang, David Dunson

We applied the proposed model to data from the Adolescent Brain Cognitive Development (ABCD) study and the Human Connectome Project (HCP) to investigate how our motion-invariant connectomes facilitate understanding of the brain network and its relationship with cognition.

DVE: Dynamic Variational Embeddings with Applications in Recommender Systems

no code implementations27 Aug 2020 Meimei Liu, Hongxia Yang

Embedding is a useful technique to project a high-dimensional feature into a low-dimensional space, and it has many successful applications including link prediction, node classification and natural language processing.

Link Prediction Node Classification +1

Exploration-Exploitation Motivated Variational Auto-Encoder for Recommender Systems

no code implementations5 Jun 2020 Yizi Zhang, Meimei Liu

Recent years have witnessed rapid developments on collaborative filtering techniques for improving the performance of recommender systems due to the growing need of companies to help users discover new and relevant items.

Collaborative Filtering Recommendation Systems

Domain Adaptive Bootstrap Aggregating

no code implementations12 Jan 2020 Meimei Liu, David B. Dunson

When there is a distributional shift between data used to train a predictive algorithm and current data, performance can suffer.

Domain Adaptation Medical Diagnosis

Auto-encoding brain networks with applications to analyzing large-scale brain imaging datasets

no code implementations7 Nov 2019 Meimei Liu, Zhengwu Zhang, David B. Dunson

In this paper, building on recent advances in deep learning, we develop a nonlinear latent factor model to characterize the population distribution of brain graphs and infer the relationships between brain structural connectomes and human traits.

Dimensionality Reduction

Statistically and Computationally Efficient Variance Estimator for Kernel Ridge Regression

no code implementations17 Sep 2018 Meimei Liu, Jean Honorio, Guang Cheng

In this paper, we propose a random projection approach to estimate variance in kernel ridge regression.

regression

Early Stopping for Nonparametric Testing

no code implementations NeurIPS 2018 Meimei Liu, Guang Cheng

Early stopping of iterative algorithms is an algorithmic regularization method to avoid over-fitting in estimation and classification.

General Classification

How Many Machines Can We Use in Parallel Computing for Kernel Ridge Regression?

no code implementations25 May 2018 Meimei Liu, Zuofeng Shang, Guang Cheng

It is worth noting that the upper bounds of the number of machines are proven to be un-improvable (upto a logarithmic factor) in two important cases: smoothing spline regression and Gaussian RKHS regression.

regression Two-sample testing

Nonparametric Testing under Random Projection

no code implementations17 Feb 2018 Meimei Liu, Zuofeng Shang, Guang Cheng

A common challenge in nonparametric inference is its high computational complexity when data volume is large.

regression

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