Search Results for author: YiCheng Pan

Found 5 papers, 4 papers with code

HILL: Hierarchy-aware Information Lossless Contrastive Learning for Hierarchical Text Classification

1 code implementation26 Mar 2024 He Zhu, Junran Wu, Ruomei Liu, Yue Hou, Ze Yuan, Shangzhe Li, YiCheng Pan, Ke Xu

Existing self-supervised methods in natural language processing (NLP), especially hierarchical text classification (HTC), mainly focus on self-supervised contrastive learning, extremely relying on human-designed augmentation rules to generate contrastive samples, which can potentially corrupt or distort the original information.

Contrastive Learning Document Embedding +3

A Simple yet Effective Method for Graph Classification

1 code implementation6 Jun 2022 Junran Wu, Shangzhe Li, Jianhao Li, YiCheng Pan, Ke Xu

Inspired by structural entropy on graphs, we transform the data sample from graphs to coding trees, which is a simpler but essential structure for graph data.

Graph Classification

Structural Optimization Makes Graph Classification Simpler and Better

1 code implementation5 Sep 2021 Junran Wu, Jianhao Li, YiCheng Pan, Ke Xu

We then present an implementation of the scheme in a tree kernel and a convolutional network to perform graph classification.

Graph Classification

An Information-theoretic Perspective of Hierarchical Clustering

no code implementations13 Aug 2021 YiCheng Pan, Feng Zheng, Bingchen Fan

In this paper, we investigate hierarchical clustering from the \emph{information-theoretic} perspective and formulate a new objective function.

Clustering

The idemetric property: when most distances are (almost) the same

1 code implementation30 Apr 2018 George Barmpalias, Neng Huang, Andrew Lewis-Pye, Angsheng Li, Xuechen Li, YiCheng Pan, Tim Roughgarden

We introduce the \emph{idemetric} property, which formalises the idea that most nodes in a graph have similar distances between them, and which turns out to be quite standard amongst small-world network models.

Social and Information Networks Discrete Mathematics

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