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We propose a novel approach for preserving topological structures of the input space in latent representations of autoencoders. Using persistent homology, a technique from topological data analysis, we calculate topological signatures of…

Machine Learning · Computer Science 2021-06-01 Michael Moor , Max Horn , Bastian Rieck , Karsten Borgwardt

Topological data analysis (TDA) is an area of data science that focuses on using invariants from algebraic topology to provide multiscale shape descriptors for geometric data sets such as point clouds. One of the most important such…

Computational Geometry · Computer Science 2023-06-21 David Loiseaux , Mathieu Carrière , Andrew J. Blumberg

Weakly-supervised audio-visual video parsing (AVVP) seeks to detect audible, visible, and audio-visual events without temporal annotations. Previous work has emphasized refining global predictions through contrastive or collaborative…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Yaru Chen , Ruohao Guo , Liting Gao , Yang Xiang , Qingyu Luo , Zhenbo Li , Wenwu Wang

In many scenarios, especially biomedical applications, the correct delineation of complex fine-scaled structures such as neurons, tissues, and vessels is critical for downstream analysis. Despite the strong predictive power of deep learning…

Computer Vision and Pattern Recognition · Computer Science 2024-03-25 Xiaoling Hu

Learning medical visual representations from image-report pairs through joint learning has garnered increasing research attention due to its potential to alleviate the data scarcity problem in the medical domain. The primary challenges stem…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Jun Wang , Lixing Zhu , Xiaohan Yu , Abhir Bhalerao , Yulan He

While text-to-image (T2I) generation models have achieved remarkable progress in recent years, existing evaluation methodologies for vision-language alignment still struggle with the fine-grained semantic matching. Current approaches based…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Zijian Zhang , Xuhui Zheng , Xuecheng Wu , Chong Peng , Xuezhi Cao

Topological Data Analysis (TDA) is an emergent field that aims to discover topological information hidden in a dataset. TDA tools have been commonly used to create filters and topological descriptors to improve Machine Learning (ML)…

Machine Learning · Computer Science 2022-02-07 Rolando Kindelan , José Frías , Mauricio Cerda , Nancy Hitschfeld

We study visual representation learning from a structural and topological perspective. We begin from a single hypothesis: that visual understanding presupposes a semantic language for vision, in which many perceptual observations correspond…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Xiu Li

Vision-language pre-training (VLP) on large-scale image-text pairs has recently witnessed rapid progress for learning cross-modal representations. Existing pre-training methods either directly concatenate image representation and text…

Computation and Language · Computer Science 2021-03-16 Chenliang Li , Ming Yan , Haiyang Xu , Fuli Luo , Wei Wang , Bin Bi , Songfang Huang

We present an approach that combines appearance and semantic information for 2D image-based localization (2D-VL) across large perceptual changes and time lags. Compared to appearance features, the semantic layout of a scene is generally…

Computer Vision and Pattern Recognition · Computer Science 2019-07-04 Zachary Seymour , Karan Sikka , Han-Pang Chiu , Supun Samarasekera , Rakesh Kumar

Learning aligned multimodal embeddings from weakly paired, label-free corpora is challenging: pipelines often provide only pre-extracted features, clips contain multiple events, and spurious co-occurrences. We propose HSC-MAE (Hierarchical…

Multimedia · Computer Science 2026-04-07 Donghuo Zeng , Hao Niu , Masato Taya

Aligning signals from different modalities is an important step in vision-language representation learning as it affects the performance of later stages such as cross-modality fusion. Since image and text typically reside in different…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Jiali Duan , Liqun Chen , Son Tran , Jinyu Yang , Yi Xu , Belinda Zeng , Trishul Chilimbi

Nowadays, Machine Learning and Deep Learning methods have become the state-of-the-art approach to solve data classification tasks. In order to use those methods, it is necessary to acquire and label a considerable amount of data; however,…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 Adrián Inés , César Domínguez , Jónathan Heras , Gadea Mata , Julio Rubio

Topological Data Analysis (TDA) is a novel statistical technique, particularly powerful for the analysis of large and high dimensional data sets. Much of TDA is based on the tool of persistent homology, represented visually via persistence…

Applications · Statistics 2017-11-07 Sarit Agami , Robert J. Adler

Vision-Language Models (VLMs) learn powerful multimodal representations through large-scale image-text pretraining, but adapting them to hierarchical classification is underexplored. Standard approaches treat labels as flat categories and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Jiayu Li , Rajesh Gangireddy , Samet Akcay , Wei Cheng , Juhua Hu

Self-supervised vision-language pretraining from pure images and text with a contrastive loss is effective, but ignores fine-grained alignment due to a dual-stream architecture that aligns image and text representations only on a global…

Computer Vision and Pattern Recognition · Computer Science 2022-07-29 Zaid Khan , Vijay Kumar BG , Xiang Yu , Samuel Schulter , Manmohan Chandraker , Yun Fu

Vision-Language Models (VLMs) have become essential backbones of modern multimodal intelligence, yet their outputs remain prone to hallucination-plausible text misaligned with visual inputs. Existing alignment approaches often rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Kejia Chen , Jiawen Zhang , Jiacong Hu , Kewei Gao , Jian Lou , Zunlei Feng , Mingli Song

Modern representation learning increasingly relies on unsupervised and self-supervised methods trained on large-scale unlabeled data. While these approaches achieve impressive generalization across tasks and domains, evaluating embedding…

Vision-language models demand watermarking solutions that protect intellectual property without compromising multimodal coherence. Existing text watermarking methods disrupt visual-textual alignment through biased token selection and static…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Shuliang Liu , Qi Zheng , Jesse Jiaxi Xu , Yibo Yan , Junyan Zhang , He Geng , Aiwei Liu , Peijie Jiang , Jia Liu , Yik-Cheung Tam , Xuming Hu

Topological Machine Learning (TML) is an emerging field that leverages techniques from algebraic topology to analyze complex data structures in ways that traditional machine learning methods may not capture. This tutorial provides a…

Machine Learning · Computer Science 2024-09-05 Baris Coskunuzer , Cüneyt Gürcan Akçora