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In a world abundant with diverse data arising from complex acquisition techniques, there is a growing need for new data analysis methods. In this paper we focus on high-dimensional data that are organized into several hierarchical datasets.…

Machine Learning · Computer Science 2021-04-06 Lior Aloni , Omer Bobrowski , Ronen Talmon

Place Recognition is a crucial capability for mobile robot localization and navigation. Image-based or Visual Place Recognition (VPR) is a challenging problem as scene appearance and camera viewpoint can change significantly when places are…

Computer Vision and Pattern Recognition · Computer Science 2021-06-23 Sourav Garg , Michael Milford

Learning local descriptors is an important problem in computer vision. While there are many techniques for learning local patch descriptors for 2D images, recently efforts have been made for learning local descriptors for 3D points. The…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Siddharth Srivastava , Brejesh Lall

Point cloud analysis is an area of increasing interest due to the development of 3D sensors that are able to rapidly measure the depth of scenes accurately. Unfortunately, applying deep learning techniques to perform point cloud analysis is…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Junming Zhang , Ming-Yuan Yu , Ram Vasudevan , Matthew Johnson-Roberson

High-dimensional reduction methods are powerful tools for describing the main patterns in big data. One of these methods is the topological data analysis (TDA), which modeling the shape of the data in terms of topological properties. This…

Methodology · Statistics 2022-05-24 Sarit Agami

Edge computing has emerged as an alternative to reduce transmission and processing delay and preserve privacy of the video streams. However, the ever-increasing complexity of Deep Neural Networks (DNNs) used in video-based applications…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Bryan Bo Cao , Abhinav Sharma , Manavjeet Singh , Anshul Gandhi , Samir Das , Shubham Jain

In this work we use the persistent homology method, a technique in topological data analysis (TDA), to extract essential topological features from the data space and combine them with deep learning features for classification tasks. In TDA,…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Mariana Dória Prata Lima , Gilson Antonio Giraldi , Gastão Florêncio Miranda Junior

In computer vision and medical imaging, the problem of matching structures finds numerous applications from automatic annotation to data reconstruction. The data however, while corresponding to the same anatomy, are often very different in…

Computer Vision and Pattern Recognition · Computer Science 2021-03-24 Pierre-Louis Antonsanti , Joan Glaunès , Thomas Benseghir , Vincent Jugnon , Irène Kaltenmark

This survey provides a comprehensive exploration of applications of Topological Data Analysis (TDA) within neural network analysis. Using TDA tools such as persistent homology and Mapper, we delve into the intricate structures and behaviors…

Machine Learning · Computer Science 2024-01-04 Rubén Ballester , Carles Casacuberta , Sergio Escalera

The exponential growth in the number of complex datasets every year requires more enhancement in machine learning methods to provide robust and accurate data classification. Lately, deep learning approaches have achieved surpassing results…

Machine Learning · Computer Science 2018-10-22 Mojtaba Heidarysafa , Kamran Kowsari , Donald E. Brown , Kiana Jafari Meimandi , Laura E. Barnes

Reducing domain divergence is a key step in transfer learning problems. Existing works focus on the minimization of global domain divergence. However, two domains may consist of several shared subdomains, and differ from each other in each…

Machine Learning · Computer Science 2020-05-08 Pengfei Wei , Yiping Ke , Xinghua Qu , Tze-Yun Leong

Recommendation system has been a widely studied task both in academia and industry. Previous works mainly focus on homogeneous recommendation and little progress has been made for heterogeneous recommender systems. However, heterogeneous…

Information Retrieval · Computer Science 2022-01-27 Chengqiang Lu , Mingyang Yin , Shuheng Shen , Luo Ji , Qi Liu , Hongxia Yang

The use of topological descriptors in modern machine learning applications, such as Persistence Diagrams (PDs) arising from Topological Data Analysis (TDA), has shown great potential in various domains. However, their practical use in…

Computational Geometry · Computer Science 2022-02-07 Thibault de Surrel , Felix Hensel , Mathieu Carrière , Théo Lacombe , Yuichi Ike , Hiroaki Kurihara , Marc Glisse , Frédéric Chazal

Topological Data Analysis (TDA) is a rising field of computational topology in which the topological structure of a data set can be observed by persistent homology. By considering a sequence of sublevel sets, one obtains a filtration that…

Methodology · Statistics 2020-03-17 Yu-Min Chung , William Cruse , Austin Lawson

Estimating the complete 3D point cloud from an incomplete one is a key problem in many vision and robotics applications. Mainstream methods (e.g., PCN and TopNet) use Multi-layer Perceptrons (MLPs) to directly process point clouds, which…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Haozhe Xie , Hongxun Yao , Shangchen Zhou , Jiageng Mao , Shengping Zhang , Wenxiu Sun

Searching topological similarity between a pair of shapes or data is an important problem in data analysis and visualization. The problem of computing similarity measures using scalar topology has been studied extensively and proven useful…

Computational Geometry · Computer Science 2020-08-31 Tripti Agarwal , Yashwanth Ramamurthi , Amit Chattopadhyay

Large and rich data is a prerequisite for effective training of deep neural networks. However, the irregularity of point cloud data makes manual annotation time-consuming and laborious. Self-supervised representation learning, which…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Xin Cao , Xinxin Han , Yifan Wang , Mengna Yang , Kang Li

The surge of data available on the Internet has driven the adoption of a wide range of computational methods for analyzing and extracting insights from large-scale data. Among these, Machine Learning (ML) has become a central paradigm,…

Computation and Language · Computer Science 2026-05-12 Adaku Uchendu , Thai Le

To deal with the exhausting annotations, self-supervised representation learning from unlabeled point clouds has drawn much attention, especially centered on augmentation-based contrastive methods. However, specific augmentations hardly…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Zhuheng Lu , Yuewei Dai , Weiqing Li , Zhiyong Su

There is a growing body of work that leverages features extracted via topological data analysis to train machine learning models. While this field, sometimes known as topological machine learning (TML), has seen some notable successes, an…

Machine Learning · Computer Science 2022-11-16 Sarah McGuire , Shane Jackson , Tegan Emerson , Henry Kvinge