Spacing Loss for Discovering Novel Categories
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Abstract (arXiv)
Novel Class Discovery (NCD) is a learning paradigm, where a machine learning model is tasked to semantically group instances from unlabeled data, by utilizing labeled instances from a disjoint set of classes. In this work, we first characterize existing NCD approaches into single-stage and two-stage methods based on whether they require access to labeled and unlabeled data together while discovering new classes. Next, we devise a simple yet powerful loss function that enforces separability in the latent space using cues from multi-dimensional scaling, which we refer to as Spacing Loss. Our proposed formulation can either operate as a standalone method or can be plugged into existing methods to enhance them. We validate the efficacy of Spacing Loss with thorough experimental evaluation across multiple settings on CIFAR-10 and CIFAR-100 datasets.
Key facts. Cited by 10 papers in the map (data through 7 Oct 2026). Builds on 31 of its 46 references that are in the map. First posted on arXiv 22 Apr 2022.
Builds on
31 of 46 references.
References · 31
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19 more
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Built on by
Citing papers per year: 2022: 2; 2023: 5; 2024: 2; 2025: 1.
10 papers.
- 2023Learning Semi-supervised Gaussian Mixture Models for Generalized Category Discoverycited by 72
- 2022Novel Class Discovery without Forgettingcited by 39
- 2023Learn to Categorize or Categorize to Learn? Self-Coding for Generalized Category Discoverycited by 39
- 2022Modeling Inter-Class and Intra-Class Constraints in Novel Class Discoverycited by 26
- 2023Novel Class Discovery: an Introduction and Key Conceptscited by 24
- 2024HiLo: A Learning Framework for Generalized Category Discovery Robust to Domain Shiftscited by 22
- 2024Effective Prompt Pool Learning for Continual Category Discoverycited by 14
- 2025Category Discovery: An Open-World Perspectivecited by 5
- 2023Novel Categories Discovery Via Constraints on Empirical Prediction Statisticscited by 3
- 2023NEV-NCD: Negative Learning, Entropy, and Variance regularization based novel action categories discoverycited by 2
- 2025Category Discovery: An Open-World Perspective26 Sep 2025
- 2024HiLo: A Learning Framework for Generalized Category Discovery Robust to Domain Shifts8 Aug 2024
- 2024Effective Prompt Pool Learning for Continual Category Discovery26 Jul 2024
- 2023Learn to Categorize or Categorize to Learn? Self-Coding for Generalized Category Discovery30 Oct 2023
- 2023Novel Categories Discovery Via Constraints on Empirical Prediction Statistics7 Jul 2023
- 2023Learning Semi-supervised Gaussian Mixture Models for Generalized Category Discovery10 May 2023
- 2023NEV-NCD: Negative Learning, Entropy, and Variance regularization based novel action categories discovery14 Apr 2023
- 2023Novel Class Discovery: an Introduction and Key Concepts22 Feb 2023
- 2022Modeling Inter-Class and Intra-Class Constraints in Novel Class Discovery7 Oct 2022
- 2022Novel Class Discovery without Forgetting21 Jul 2022