Publications by authors named "Gianluca Maguolo"

In this work, we present an ensemble of descriptors for the classification of virus images acquired using transmission electron microscopy. We trained multiple support vector machines on different sets of features extracted from the data. We used both handcrafted algorithms and a pretrained deep neural network as feature extractors.

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Article Synopsis
  • The paper evaluates various testing protocols for automatic COVID-19 diagnosis using X-Ray images, highlighting that accurate results can be achieved even when lung areas are obscured.
  • It finds that some testing methods may not be valid, as neural networks may be learning irrelevant patterns instead of indicators of COVID-19.
  • The authors propose a framework for assessing the fairness of testing protocols and suggest future research should focus on improving testing techniques and utilizing their evaluation tools.
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Traditionally, classifiers are trained to predict patterns within a feature space. The image classification system presented here trains classifiers to predict patterns within a vector space by combining the dissimilarity spaces generated by a large set of Siamese Neural Networks (SNNs). A set of centroids from the patterns in the training data sets is calculated with supervised k-means clustering.

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In recent years, the field of deep learning has achieved considerable success in pattern recognition, image segmentation, and many other classification fields. There are many studies and practical applications of deep learning on images, video, or text classification. Activation functions play a crucial role in discriminative capabilities of the deep neural networks and the design of new "static" or "dynamic" activation functions is an active area of research.

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