Diagnostics (Oct 2023)

DermAI 1.0: A Robust, Generalized, and Novel Attention-Enabled Ensemble-Based Transfer Learning Paradigm for Multiclass Classification of Skin Lesion Images

  • Prabhav Sanga,
  • Jaskaran Singh,
  • Arun Kumar Dubey,
  • Narendra N. Khanna,
  • John R. Laird,
  • Gavino Faa,
  • Inder M. Singh,
  • Georgios Tsoulfas,
  • Mannudeep K. Kalra,
  • Jagjit S. Teji,
  • Mustafa Al-Maini,
  • Vijay Rathore,
  • Vikas Agarwal,
  • Puneet Ahluwalia,
  • Mostafa M. Fouda,
  • Luca Saba,
  • Jasjit S. Suri

DOI
https://doi.org/10.3390/diagnostics13193159
Journal volume & issue
Vol. 13, no. 19
p. 3159

Abstract

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Skin lesion classification plays a crucial role in dermatology, aiding in the early detection, diagnosis, and management of life-threatening malignant lesions. However, standalone transfer learning (TL) models failed to deliver optimal performance. In this study, we present an attention-enabled ensemble-based deep learning technique, a powerful, novel, and generalized method for extracting features for the classification of skin lesions. This technique holds significant promise in enhancing diagnostic accuracy by using seven pre-trained TL models for classification. Six ensemble-based DL (EBDL) models were created using stacking, softmax voting, and weighted average techniques. Furthermore, we investigated the attention mechanism as an effective paradigm and created seven attention-enabled transfer learning (aeTL) models before branching out to construct three attention-enabled ensemble-based DL (aeEBDL) models to create a reliable, adaptive, and generalized paradigm. The mean accuracy of the TL models is 95.30%, and the use of an ensemble-based paradigm increased it by 4.22%, to 99.52%. The aeTL models’ performance was superior to the TL models in accuracy by 3.01%, and aeEBDL models outperformed aeTL models by 1.29%. Statistical tests show significant p-value and Kappa coefficient along with a 99.6% reliability index for the aeEBDL models. The approach is highly effective and generalized for the classification of skin lesions.

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