Unsupervised affinity learning based on manifold analysis for image retrieval: A survey

VH Pereira-Ferrero, TG Lewis, LP Valem… - Computer Science …, 2024 - Elsevier
Despite the advances in machine learning techniques, similarity assessment among
multimedia data remains a challenging task of broad interest in computer science …

Graph Convolutional Networks based on manifold learning for semi-supervised image classification

LP Valem, DCG Pedronette, LJ Latecki - Computer Vision and Image …, 2023 - Elsevier
Due to a huge volume of information in many domains, the need for classification methods is
imperious. In spite of many advances, most of the approaches require a large amount of …

Rank flow embedding for unsupervised and semi-supervised manifold learning

LP Valem, DCG Pedronette… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Impressive advances in acquisition and sharing technologies have made the growth of
multimedia collections and their applications almost unlimited. However, the opposite is true …

An unsupervised distance learning framework for multimedia retrieval

LP Valem, DCG Pedronette - Proceedings of the 2017 ACM on …, 2017 - dl.acm.org
Due to the increasing availability of image and multimedia collections, unsupervised post-
processing methods, which are capable of improving the effectiveness of retrieval results …

pyUDLF: A Python Framework for Unsupervised Distance Learning Tasks

G Leticio, LP Valem, LT Lopes… - Proceedings of the 31st …, 2023 - dl.acm.org
The representation of multimedia content experienced tremendous advances in the last
decades. Mainly supported by deep learning models, impressive results have been …

Unsupervised similarity learning through Cartesian product of ranking references

LP Valem, DCG Pedronette, J Almeida - Pattern Recognition Letters, 2018 - Elsevier
Despite the consistent advances in visual features and other Multimedia Information
Retrieval (MIR) techniques, measuring the similarity among multimedia objects is still a …

A survey of image data indexing techniques

S Sharma, V Gupta, M Juneja - Artificial Intelligence Review, 2019 - Springer
The Index is a data structure which stores data in a suitably abstracted and compressed form
to facilitate rapid processing by an application. Multidimensional databases may have a lot …

Unsupervised similarity learning through rank correlation and knn sets

LP Valem, CRD Oliveira, DCG Pedronette… - ACM Transactions on …, 2018 - dl.acm.org
The increasing amount of multimedia data collections available today evinces the pressing
need for methods capable of indexing and retrieving this content. Despite the continuous …

Unsupervised similarity learning through cartesian product of ranking references for image retrieval tasks

LP Valem, DCG Pedronette - 2016 29th SIBGRAPI Conference …, 2016 - ieeexplore.ieee.org
Despite the consistent advances in visual features and other Content-Based Image Retrieval
techniques, measuring the similarity among images is still a challenging task for effective …

Selection and combination of unsupervised learning methods for image retrieval

LP Valem, DCG Pedronette - … of the 15th International Workshop on …, 2017 - dl.acm.org
The evolution of technologies to store and share images has made imperative the need for
methods to index and retrieve multimedia information based on visual content. The CBIR …