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Image Classification based on BOW (Bag-of-words) has broad application prospect in pattern recognition field but the shortcomings are existed because of single feature and low classification accuracy. To this end we combine three…

Computer Vision and Pattern Recognition · Computer Science 2015-11-06 Huilin Gao , Wenjie Chen , Lihua Dou

A join is a set of manuscript fragments identified as originally emanating from the same manuscript. We study manuscript join retrieval: Given a query image of a fragment, retrieve other fragments originating from the same physical…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Sharva Gogawale , Gal Grudka , Daria Vasyutinsky-Shapira , Omer Ventura , Berat Kurar-Barakat , Nachum Dershowitz

Modern circuit design process increasingly adopts high-level hardware construction languages and parameterized design methodologies to shorten development cycles and maintain high reusability, in contrast to traditional hardware description…

Logic in Computer Science · Computer Science 2025-12-15 Ziyi Yang , Guangyu Hu , Xiaofeng Zhou , Mingkai Miao , Changyuan Yu , Wei Zhang , Hongce Zhang

Change detection, i.e., anomaly detection from local maps built by a mobile robot at multiple different times, is a challenging problem to solve in practice. Most previous work either cannot be applied to scenarios where the size of the map…

Robotics · Computer Science 2016-03-04 Tanaka Kanji

Continuous Bag of Words (CBOW) is a powerful text embedding method. Due to its strong capabilities to encode word content, CBOW embeddings perform well on a wide range of downstream tasks while being efficient to compute. However, CBOW is…

Computation and Language · Computer Science 2019-02-19 Florian Mai , Lukas Galke , Ansgar Scherp

In this paper we propose a novel algorithm, Wi-Closure, to improve computational efficiency and robustness of loop closure detection in multi-robot SLAM. Our approach decreases the computational overhead of classical approaches by pruning…

Robotics · Computer Science 2022-11-24 Weiying Wang , Anne Kemmeren , Daniel Son , Javier Alonso-Mora , Stephanie Gil

This paper presents a new framework for visual bag-of-words (BOW) refinement and reduction to overcome the drawbacks associated with the visual BOW model which has been widely used for image classification. Although very influential in the…

Computer Vision and Pattern Recognition · Computer Science 2017-07-04 Zhiwu Lu , Liwei Wang , Ji-Rong Wen

Retrieval-Augmented Generation (RAG) systems enhance text generation by incorporating external knowledge but often struggle when retrieving context across different text modalities due to semantic gaps. We introduce a generalized…

Machine Learning · Computer Science 2024-11-01 Arihan Yadav , Alan McMillan

Using natural language as a supervision for training visual recognition models holds great promise. Recent works have shown that if such supervision is used in the form of alignment between images and captions in large training datasets,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-07 Ajinkya Tejankar , Maziar Sanjabi , Bichen Wu , Saining Xie , Madian Khabsa , Hamed Pirsiavash , Hamed Firooz

This work proposes a simple instance retrieval pipeline based on encoding the convolutional features of CNN using the bag of words aggregation scheme (BoW). Assigning each local array of activations in a convolutional layer to a visual word…

Computer Vision and Pattern Recognition · Computer Science 2016-06-21 Eva Mohedano , Amaia Salvador , Kevin McGuinness , Ferran Marques , Noel E. O'Connor , Xavier Giro-i-Nieto

Loop closure is necessary for correcting errors accumulated in simultaneous localization and mapping (SLAM) in unknown environments. However, conventional loop closure methods based on low-level geometric or image features may cause high…

Robotics · Computer Science 2023-11-22 Zhentian Qian , Jie Fu , Jing Xiao

Medical Image Retrieval is a challenging field in Visual information retrieval, due to the multi-dimensional and multi-modal context of the underlying content. Traditional models often fail to take the intrinsic characteristics of data into…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Sowmya Kamath S , Karthik K

In appearance-based localization and mapping, loop closure detection is the process used to determinate if the current observation comes from a previously visited location or a new one. As the size of the internal map increases, so does the…

Robotics · Computer Science 2024-07-23 Mathieu Labbé , François Michaud

In recent years, the robotics community has extensively examined methods concerning the place recognition task within the scope of simultaneous localization and mapping applications.This article proposes an appearance-based loop closure…

Computer Vision and Pattern Recognition · Computer Science 2022-01-04 Shan An , Haogang Zhu , Dong Wei , Konstantinos A. Tsintotas , Antonios Gasteratos

The bag-of-words (BOW) model is the common approach for classifying documents, where words are used as feature for training a classifier. This generally involves a huge number of features. Some techniques, such as Latent Semantic Analysis…

Computation and Language · Computer Science 2015-04-13 Rémi Lebret , Ronan Collobert

In this paper, we put forward a new tool, called SpaML, for spam detection using a set of supervised and unsupervised classifiers, and two techniques imbued with Natural Language Processing (NLP), namely Bag of Words (BoW) and Term…

Cryptography and Security · Computer Science 2021-01-01 Jaouhar Fattahi , Mohamed Mejri

In this work, we present the Bregman Alternating Projected Gradient (BAPG) method, a single-loop algorithm that offers an approximate solution to the Gromov-Wasserstein (GW) distance. We introduce a novel relaxation technique that balances…

Computational Geometry · Computer Science 2023-03-14 Jiajin Li , Jianheng Tang , Lemin Kong , Huikang Liu , Jia Li , Anthony Man-Cho So , Jose Blanchet

Multi-agent cooperative SLAM often encounters challenges in similar indoor environments characterized by repetitive structures, such as corridors and rooms. These challenges can lead to significant inaccuracies in shared location…

Robotics · Computer Science 2025-10-28 Chunyu Li , Shoubin Chen , Dong Li , Weixing Xue , Qingquan Li

Simultaneous Localization and Mapping (SLAM) techniques play a key role towards long-term autonomy of mobile robots due to the ability to correct localization errors and produce consistent maps of an environment over time. Contrarily to…

This paper proposes a semantic segmentation method for outdoor scenes captured by a surveillance camera. Our algorithm classifies each perceptually homogenous region as one of the predefined classes learned from a collection of manually…

Computer Vision and Pattern Recognition · Computer Science 2013-05-15 Wassim Bouachir , Atousa Torabi , Guillaume-Alexandre Bilodeau , Pascal Blais