Search Results for author: Xiaojun Guo

Found 3 papers, 1 papers with code

ContraNorm: A Contrastive Learning Perspective on Oversmoothing and Beyond

2 code implementations12 Mar 2023 Xiaojun Guo, Yifei Wang, Tianqi Du, Yisen Wang

Instead of characterizing oversmoothing from the view of complete collapse in which representations converge to a single point, we dive into a more general perspective of dimensional collapse in which representations lie in a narrow cone.

Contrastive Learning

Understanding Graph Learning with Local Intrinsic Dimensionality

no code implementations29 Sep 2021 Xiaojun Guo, Xingjun Ma, Yisen Wang

Many real-world problems can be formulated as graphs and solved by graph learning techniques.

Graph Learning

Time Difference of Arrival (TDoA) Localization Combining Weighted Least Squares and Firefly Algorithm

no code implementations MDPI 2019 Peng Wu, Shaojing Su, Zhen Zuo *, Xiaojun Guo, Bei Sun and Xudong Wen

This paper proposes a hybrid firefly algorithm (hybrid‐FA) method, combining the weighted least squares (WLS) algorithm and FA, which can reduce computation as well as achieve high accuracy.

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