Search Results for author: Xi Luo

Found 7 papers, 2 papers with code

Online Ecological Gearshift Strategy via Neural Network with Soft-Argmax Operator

no code implementations28 Feb 2024 Xi Luo, Shiying Dong, Jinlong Hong, Bingzhao Gao, Hong Chen

This paper presents a neural network optimizer with soft-argmax operator to achieve an ecological gearshift strategy in real-time.

Model Predictive Control

AutoSweep: Recovering 3D Editable Objectsfrom a Single Photograph

1 code implementation27 May 2020 Xin Chen, Yuwei Li, Xi Luo, Tianjia Shao, Jingyi Yu, Kun Zhou, Youyi Zheng

We base our work on the assumption that most human-made objects are constituted by parts and these parts can be well represented by generalized primitives.

3D Reconstruction Instance Segmentation +1

Granger Mediation Analysis of Multiple Time Series with an Application to fMRI

no code implementations15 Sep 2017 Yi Zhao, Xi Luo

These models not only provide valid causal mediation for time series data but also model the causal dynamics across time.

Time Series Time Series Analysis +1

Pathway Lasso: Estimate and Select Sparse Mediation Pathways with High Dimensional Mediators

no code implementations24 Mar 2016 Yi Zhao, Xi Luo

In many scientific studies, it becomes increasingly important to delineate the causal pathways through a large number of mediators, such as genetic and brain mediators.

Model Selection

Model Assisted Variable Clustering: Minimax-optimal Recovery and Algorithms

1 code implementation8 Aug 2015 Florentina Bunea, Christophe Giraud, Xi Luo, Martin Royer, Nicolas Verzelen

We quantify the difficulty of clustering data generated from a G-block covariance model in terms of cluster proximity, measured with respect to two related, but different, cluster separation metrics.

Clustering

A Hierarchical Graphical Model for Big Inverse Covariance Estimation with an Application to fMRI

no code implementations19 Mar 2014 Xi Luo

This model introduces a hidden layer of networks based on sparse Gaussian graphical models, and the observed data are sampled from individual network nodes.

Fast and Adaptive Sparse Precision Matrix Estimation in High Dimensions

no code implementations17 Mar 2012 Weidong Liu, Xi Luo

We analyze an adaptive procedure based on cross validation, and establish its convergence rate under the Frobenius norm.

Vocal Bursts Intensity Prediction

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