Search Results for author: Junjie Sun

Found 5 papers, 1 papers with code

Navigate Beyond Shortcuts: Debiased Learning through the Lens of Neural Collapse

no code implementations9 May 2024 Yining Wang, Junjie Sun, Chenyue Wang, Mi Zhang, Min Yang

Recent studies have noted an intriguing phenomenon termed Neural Collapse, that is, when the neural networks establish the right correlation between feature spaces and the training targets, their last-layer features, together with the classifier weights, will collapse into a stable and symmetric structure.

Navigate

BELT: Old-School Backdoor Attacks can Evade the State-of-the-Art Defense with Backdoor Exclusivity Lifting

1 code implementation8 Dec 2023 Huming Qiu, Junjie Sun, Mi Zhang, Xudong Pan, Min Yang

Deep neural networks (DNNs) are susceptible to backdoor attacks, where malicious functionality is embedded to allow attackers to trigger incorrect classifications.

Label-enhanced Prototypical Network with Contrastive Learning for Multi-label Few-shot Aspect Category Detection

no code implementations14 Jun 2022 Han Liu, Feng Zhang, Xiaotong Zhang, Siyang Zhao, Junjie Sun, Hong Yu, Xianchao Zhang

Multi-label aspect category detection allows a given review sentence to contain multiple aspect categories, which is shown to be more practical in sentiment analysis and attracting increasing attention.

Aspect Category Detection Contrastive Learning +2

A Simple Meta-learning Paradigm for Zero-shot Intent Classification with Mixture Attention Mechanism

no code implementations5 Jun 2022 Han Liu, Siyang Zhao, Xiaotong Zhang, Feng Zhang, Junjie Sun, Hong Yu, Xianchao Zhang

Zero-shot intent classification is a vital and challenging task in dialogue systems, which aims to deal with numerous fast-emerging unacquainted intents without annotated training data.

Classification intent-classification +4

Kinetic Energy Distribution of Fragments for Thermal Neutron-Induced $^{235}$U and $^{239}$Pu Fission Reactions

no code implementations24 Dec 2020 Xiaojun Sun, Haiyuan Peng, Liying Xie, Kai Zhang, Yan Liang, Yinlu Han, Nengchuan Su, Jie Yan, Jun Xiao, Junjie Sun

(2) Every complementary pair of the primary fission fragments is approximatively described as two ellipsoids with large deformation at scission moment.

Nuclear Theory

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