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In this paper, we focus on Novel Class Discovery for Point Cloud Segmentation (3D-NCD), aiming to learn a model that can segment unlabeled (novel) 3D classes using only the supervision from labeled (base) 3D classes. The key to this task is…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Yang Li , Aming Wu , Zihao Zhang , Yahong Han

Modeling implicit feature interaction patterns is of significant importance to object detection tasks. However, in the two-stage detectors, due to the excessive use of hand-crafted components, it is very difficult to reason about the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-06 Wenchao Zhang , Chong Fu , Xiangshi Chang , Tengfei Zhao , Xiang Li , Chiu-Wing Sham

Higher-order abstract GSOS is a recent extension of Turi and Plotkin's framework of Mathematical Operational Semantics to higher-order languages. The fundamental well-behavedness property of all specifications within the framework is that…

Programming Languages · Computer Science 2023-09-29 Henning Urbat , Stelios Tsampas , Sergey Goncharov , Stefan Milius , Lutz Schröder

The article investigates classes of queries maintainable by conjunctive queries (CQs) and their extensions and restrictions in the dynamic complexity framework of Patnaik and Immerman. Starting from the basic language of quantifier-free…

Logic in Computer Science · Computer Science 2017-04-06 Thomas Zeume , Thomas Schwentick

Open-vocabulary object detection (OVOD) aims to detect known and unknown objects in the open world by leveraging text prompts. Benefiting from the emergence of large-scale vision--language pre-trained models, OVOD has demonstrated strong…

Computer Vision and Pattern Recognition · Computer Science 2026-03-30 Jiaming Liang , Yifeng Zhan , Chunlin Liu , Weihua Zheng , Bingye Peng , Qiwei Liang , Boyang Cai , Xiaochun Mai , Qiang Nie

We prove The Equivalence Theorem: structurally complete knowledge representation requires exactly four mutually entailing capabilities -- n-ary relationships with attributes, temporal validity, uncertainty quantification, and causal…

Databases · Computer Science 2026-03-17 Matthew Alford

Searching learning or rules in relational database for data mining purposes with characteristic or classification/discriminant rule in attribute oriented induction technique can be quicker, easy, and simple with simple SQL statement. With…

Databases · Computer Science 2010-06-10 Spits Warnars

The extraction of modular object-centric representations for downstream tasks is an emerging area of research. Learning grounded representations of objects that are guaranteed to be stable and invariant promises robust performance across…

Machine Learning · Computer Science 2024-01-26 Avinash Kori , Francesco Locatello , Fabio De Sousa Ribeiro , Francesca Toni , Ben Glocker

In this article we formally define and investigate the computational complexity of the Definability Problem for open first-order formulas (i.e., quantifier free first-order formulas) with equality. Given a logic $\mathbf{\mathcal{L}}$, the…

Computational Complexity · Computer Science 2019-04-10 Carlos Areces , Miguel Campercholi , Daniel Penazzi , Pablo Ventura

In this work, we address the challenging and emergent problem of novel object detection (NOD), focusing on the accurate detection of both known and novel object categories during inference. Traditional object detection algorithms are…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Rohit Bharadwaj , Muzammal Naseer , Salman Khan , Fahad Shahbaz Khan

We introduce and study relatively divisible and relatively flat objects in exact categories in the sense of Quillen. For every relative cotorsion pair $(\mathcal{A},\mathcal{B})$ in an exact category $\mathcal{C}$, $\mathcal{A}$ coincides…

Category Theory · Mathematics 2018-10-30 Septimiu Crivei , Derya Keskin Tütüncü

With the exponential growth of data, traditional object detection methods are increasingly struggling to handle vast vocabulary object detection tasks effectively. We analyze two key limitations of classification-based detectors: positive…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Zhichao Sun , Huazhang Hu , Yidong Ma , Gang Liu , Yibo Chen , Xu Tang , Yao Hu , Yongchao Xu

Open-vocabulary object detection (OVOD) aims to recognize novel objects whose categories are not included in the training set. In order to classify these unseen classes during training, many OVOD frameworks leverage the zero-shot capability…

Computer Vision and Pattern Recognition · Computer Science 2024-02-22 Joonhyun Jeong , Geondo Park , Jayeon Yoo , Hyungsik Jung , Heesu Kim

The logic of nulls in databases has been subject of investigation since their introduction in Codd's Relational Model, which is the foundation of the SQL standard. We show a logical characterisation of a first-order fragment of SQL with…

Databases · Computer Science 2022-02-23 Enrico Franconi , Sergio Tessaris

In ontology-based data access (OBDA), users are provided with a conceptual view of a (relational) data source that abstracts away details about data storage. This conceptual view is realized through an ontology that is connected to the data…

Databases · Computer Science 2018-02-05 Davide Lanti , Guohui Xiao , Diego Calvanese

Conjunctive queries select and are expected to return certain tuples from a relational database. We study the potentially easier problem of counting all selected tuples, rather than enumerating them. In particular, we are interested in the…

Computational Complexity · Computer Science 2019-04-30 Holger Dell , Marc Roth , Philip Wellnitz

We show that the Segal topos of derived stacks over simplicial commutative $k$-algebras, which can be used to model natural phenomena, has a subobject classifier, something we regard as being a source from which dynamics is generated. This…

Algebraic Geometry · Mathematics 2018-02-08 Renaud Gauthier

Ontology-based data access (OBDA) is a popular paradigm for querying heterogeneous data sources by connecting them through mappings to an ontology. In OBDA, it is often difficult to reconstruct why a tuple occurs in the answer of a query.…

Databases · Computer Science 2019-06-04 Diego Calvanese , Davide Lanti , Ana Ozaki , Rafael Penaloza , Guohui Xiao

The goal of this paper is open-vocabulary object detection (OVOD) $\unicode{x2013}$ building a model that can detect objects beyond the set of categories seen at training, thus enabling the user to specify categories of interest at…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Prannay Kaul , Weidi Xie , Andrew Zisserman

Hackl, Koster-Hale & Varvoutis (2012; Journal of Semantics, 29, 145-206; HKV) provide data that suggested that in a null context, antecedent-contained-deletion (ACD) relative clause structures modifying a quantified object noun phrase are…

Neurons and Cognition · Quantitative Biology 2016-05-03 Edward Gibson , Roger Levy