Search Results for author: Xiaodong Luo

Found 10 papers, 4 papers with code

When GNNs meet symmetry in ILPs: an orbit-based feature augmentation approach

1 code implementation24 Jan 2025 Qian Chen, Lei LI, Qian Li, Jianghua Wu, Akang Wang, Ruoyu Sun, Xiaodong Luo, Tsung-Hui Chang, Qingjiang Shi

In this work, we investigate the properties of permutation equivariance and invariance in GNNs, particularly in relation to the inherent symmetry of ILP formulations.

An Efficient Unsupervised Framework for Convex Quadratic Programs via Deep Unrolling

no code implementations2 Dec 2024 Linxin Yang, Bingheng Li, Tian Ding, Jianghua Wu, Akang Wang, Yuyi Wang, Jiliang Tang, Ruoyu Sun, Xiaodong Luo

Unlike the standard learning-to-optimize framework that requires optimization solutions generated by solvers, our unsupervised method adjusts the network weights directly from the evaluation of the primal-dual gap.

NeuroLifting: Neural Inference on Markov Random Fields at Scale

no code implementations28 Nov 2024 Yaomin Wang, Chaolong Ying, Xiaodong Luo, Tianshu Yu

Inference in large-scale Markov Random Fields (MRFs) is a critical yet challenging task, traditionally approached through approximate methods like belief propagation and mean field, or exact methods such as the Toulbar2 solver.

Stackelberg reinsurance and premium decisions with MV criterion and irreversibility

no code implementations18 Feb 2024 Zongxia Liang, Xiaodong Luo

We study a reinsurance Stackelberg game in which both the insurer and the reinsurer adopt the mean-variance (abbr.

Decision Making

Consumption-investment decisions with endogenous reference point and drawdown constraint

no code implementations1 Apr 2022 Zongxia Liang, Xiaodong Luo, Fengyi Yuan

We propose a consumption-investment decision model where past consumption peak $h$ plays a crucial role.

Bayesian Methods for the Analysis of Early-Phase Oncology Basket Trials with Information Borrowing across Cancer Types

1 code implementation7 Feb 2020 Jin Jin, Marie-Karelle Riviere, Xiaodong Luo, Yingwen Dong

We did simulation studies to compare CBHM with independent analysis and three information borrowing approaches: the conventional Bayesian hierarchical model, the EXNEX approach and Liu's two-stage approach.

Applications

A Simulation-free Group Sequential Design with Max-combo Tests in the Presence of Non-proportional Hazards

1 code implementation13 Nov 2019 Lili Wang, Xiaodong Luo, Cheng Zheng

The integration and application of maxcombo tests in interim analyses often require extensive simulation studies.

Methodology

FTGAN: A Fully-trained Generative Adversarial Networks for Text to Face Generation

no code implementations11 Apr 2019 Xiang Chen, Lingbo Qing, Xiaohai He, Xiaodong Luo, Yining Xu

With a novel fully-trained generative network, FTGAN can synthesize higher-quality images and urge the outputs of the FTGAN are more relevant to the input sentences.

Decoder Face Generation +2

Ensemble-based kernel learning for a class of data assimilation problems with imperfect forward simulators

no code implementations30 Jan 2019 Xiaodong Luo

For demonstration, we apply the ensemble-based learning framework and the integrated, ensemble-based data assimilation framework to a supervised learning problem and a data assimilation problem with an imperfect forward simulator, respectively.

BIG-bench Machine Learning

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