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Item type:Publication, Interpretable multimodal classification for age-related macular degeneration diagnosis(2024) ;Carla Vairetti ;Sebastián Maldonado ;Loreto Cuitino; Xu Yanwu<jats:p>Explainable Artificial Intelligence (XAI) is an emerging machine learning field that has been successful in medical image analysis. Interpretable approaches are able to “unbox” the black-box decisions made by AI systems, aiding medical doctors to justify their diagnostics better. In this paper, we analyze the performance of three different XAI strategies for medical image analysis in ophthalmology. We consider a multimodal deep learning model that combines optical coherence tomography (OCT) and infrared reflectance (IR) imaging for the diagnosis of age-related macular degeneration (AMD). The classification model is able to achieve an accuracy of 0.94, performing better than other unimodal alternatives. We analyze the XAI methods in terms of their ability to identify retinal damage and ease of interpretation, concluding that grad-CAM and guided grad-CAM can be combined to have both a coarse visual justification and a fine-grained analysis of the retinal layers. We provide important insights and recommendations for practitioners on how to design automated and explainable screening tests based on the combination of two image sources.</jats:p>Scopus© Citations 7 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Combination of infrared reflectance and OCT imaging for age-related macular degeneration screening via deep learning(2023); ;Felipe Salgado ;Loreto Cuitino ;Carla VairettiFabián Vega Tapia10 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Mining EEG with SVM for Understanding Cognitive Underpinnings of Math Problem Solving Strategies(2018); ; ;Julio LópezSebastián Maldonado<jats:p>We have developed a new methodology for examining and extracting patterns from brain electric activity by using data mining and machine learning techniques. Data was collected from experiments focused on the study of cognitive processes that might evoke different specific strategies in the resolution of math problems. A binary classification problem was constructed using correlations and phase synchronization between different electroencephalographic channels as characteristics and, as labels or classes, the math performances of individuals participating in specially designed experiments. The proposed methodology is based on using well-established procedures of feature selection, which were used to determine a suitable brain functional network size related to math problem solving strategies and also to discover the most relevant links in this network without including noisy connections or excluding significant connections.</jats:p>12 1Scopus© Citations 9