no code implementations • 14 Aug 2024 • Enhao Zhang, Chaohua Li, Chuanxing Geng, Songcan Chen
Neural Collapse (NC) presents an elegant geometric structure that enables individual activations (features), class means and classifier (weights) vectors to reach \textit{optimal} inter-class separability during the terminal phase of training on a \textit{balanced} dataset.
1 code implementation • 27 Apr 2024 • Haifeng Yang, Chuanxing Geng, Pong C. Yuen, Songcan Chen
In particular, a novel self-matching module is designed for OSSL, which can achieve the adaptation in automatically identifying known class samples while rejecting unknown class samples which are further utilized to enhance the discriminability of the model as the instantiated representation of unknown classes.
no code implementations • 31 Jan 2024 • Chaohua Li, Enhao Zhang, Chuanxing Geng, Songcan Chen
In open-set recognition (OSR), a promising strategy is exploiting pseudo-unknown data outside given $K$ known classes as an additional $K$+$1$-th class to explicitly model potential open space.
no code implementations • 26 Jul 2022 • Enhao Zhang, Chuanxing Geng, Songcan Chen
For these issues, we propose the Class-aware Universum Inspired Re-balance Learning(CaUIRL) for long-tailed recognition, which endows the Universum with class-aware ability to re-balance individual minority classes from both sample quantity and quality.
no code implementations • 5 May 2022 • Chuanxing Geng, Aiyang Han, Songcan Chen
Consistency and complementarity are two key ingredients for boosting multi-view clustering (MVC).
1 code implementation • 22 Apr 2022 • Aiyang Han, Chuanxing Geng, Songcan Chen
In this paper, inspired by Universum Learning which uses out-of-class samples to assist the target tasks, we investigate Mixup from a largely under-explored perspective - the potential to generate in-domain samples that belong to none of the target classes, that is, universum.
1 code implementation • 24 Dec 2020 • Weikai Li, Chuanxing Geng, Songcan Chen
On the one hand, for small data cases, CV suffers a conservatively biased estimation, since some part of the limited data has to hold out for validation.
no code implementations • 22 Feb 2020 • Chuanxing Geng, Zhenghao Tan, Songcan Chen
Specifically, a simple multi-view learning framework is specially designed (SSL-MV), which assists the feature learning of downstream tasks (original view) through the same tasks on the augmented views.
no code implementations • 12 Aug 2019 • Chuanxing Geng, Lue Tao, Songcan Chen
On the other hand, for G-OSR, introducing such semantic information of known classes not only improves the recognition performance but also endows OSR with the cognitive ability of unknown classes.
no code implementations • 21 Nov 2018 • Chuanxing Geng, Sheng-Jun Huang, Songcan Chen
A more realistic scenario is open set recognition (OSR), where incomplete knowledge of the world exists at training time, and unknown classes can be submitted to an algorithm during testing, requiring the classifiers to not only accurately classify the seen classes, but also effectively deal with the unseen ones.
no code implementations • 29 Jun 2018 • Chuanxing Geng, Songcan Chen
In open set recognition (OSR), almost all existing methods are designed specially for recognizing individual instances, even these instances are collectively coming in batch.