Search Results for author: Chaojie Ji

Found 9 papers, 1 papers with code

REFRAME: Reflective Surface Real-Time Rendering for Mobile Devices

no code implementations25 Mar 2024 Chaojie Ji, Yufeng Li, Yiyi Liao

This work tackles the challenging task of achieving real-time novel view synthesis on various scenes, including highly reflective objects and unbounded outdoor scenes.

Novel View Synthesis

A GPU-Accelerated Moving-Horizon Algorithm for Training Deep Classification Trees on Large Datasets

no code implementations12 Nov 2023 Jiayang Ren, Valentín Osuna-Enciso, Morimasa Okamoto, Qiangqiang Mao, Chaojie Ji, Liang Cao, Kaixun Hua, Yankai Cao

Decision trees are essential yet NP-complete to train, prompting the widespread use of heuristic methods such as CART, which suffers from sub-optimal performance due to its greedy nature.

A Global Optimization Algorithm for K-Center Clustering of One Billion Samples

no code implementations30 Dec 2022 Jiayang Ren, Ningning You, Kaixun Hua, Chaojie Ji, Yankai Cao

This paper presents a practical global optimization algorithm for the K-center clustering problem, which aims to select K samples as the cluster centers to minimize the maximum within-cluster distance.

Clustering

Smoothness Sensor: Adaptive Smoothness-Transition Graph Convolutions for Attributed Graph Clustering

no code implementations12 Sep 2020 Chaojie Ji, Hongwei Chen, Ruxin Wang, Yunpeng Cai, Hongyan Wu

Clustering the nodes of an attributed graph, in which each node is associated with a set of feature attributes, has attracted significant attention.

Clustering Graph Clustering

Graph Polish: A Novel Graph Generation Paradigm for Molecular Optimization

no code implementations14 Aug 2020 Chaojie Ji, Yijia Zheng, Ruxin Wang, Yunpeng Cai, Hongyan Wu

In this study, we present a novel molecular optimization paradigm, Graph Polish, which changes molecular optimization from the traditional "two-language translating" task into a "single-language polishing" task.

Drug Discovery Graph Generation

Boundary-aware Context Neural Network for Medical Image Segmentation

1 code implementation3 May 2020 Ruxin Wang, Shuyuan Chen, Chaojie Ji, Jianping Fan, Ye Li

In this paper, we formulate a boundary-aware context neural network (BA-Net) for 2D medical image segmentation to capture richer context and preserve fine spatial information.

Image Segmentation Medical Image Segmentation +3

Perturb More, Trap More: Understanding Behaviors of Graph Neural Networks

no code implementations21 Apr 2020 Chaojie Ji, Ruxin Wang, Hongyan Wu

While graph neural networks (GNNs) have shown a great potential in various tasks on graph, the lack of transparency has hindered understanding how GNNs arrived at its predictions.

Translation

Cascaded Context Enhancement Network for Automatic Skin Lesion Segmentation

no code implementations17 Apr 2020 Ruxin Wang, Shuyuan Chen, Chaojie Ji, Ye Li

In this paper, we formulate a cascaded context enhancement neural network for automatic skin lesion segmentation.

Lesion Segmentation Melanoma Diagnosis +3

HopGAT: Hop-aware Supervision Graph Attention Networks for Sparsely Labeled Graphs

no code implementations9 Apr 2020 Chaojie Ji, Ruxin Wang, Rongxiang Zhu, Yunpeng Cai, Hongyan Wu

Due to the cost of labeling nodes, classifying a node in a sparsely labeled graph while maintaining the prediction accuracy deserves attention.

General Classification Graph Attention +1

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