Feature Selection Study on Separate Multi-modal Datasets: Application on Cutaneous Melanoma

Konstantinos Moutselos (1) , Aristotelis Chatziioannou (2) , Ilias Maglogiannis (1)

1 UCG - University of Central Greece
2 Institute of Biological Research and Biotechnology

In this work, we study the behavior of a feature selection algorithm (backwards selection) using random forests, by fusing multi-modal data from different subjects. Two separate datasets related to cutaneous melanoma, obtained from image (dermoscopy) and non-image (microarray) sources are used. Imputations are applied in order to acquire a unified dataset, prior the effect of machine learning algorithms. The results suggest that application of the normal random imputation method acts as an additional variation factor, helping towards stability of potential recommended biomarkers. In addition, microarray-derived features were favorably selected as best predictors compared to image-derived features.

Mots clés: feature selection; random forest; biomarkers; cutaneous melanoma

Domaines: Informatique [cs]

Konstantinos Moutselos, Aristotelis Chatziioannou, Ilias Maglogiannis. Feature Selection Study on Separate Multi-modal Datasets: Application on Cutaneous Melanoma. 8th International Conference on Artificial Intelligence Applications and Innovations (AIAI), Sep 2012, Halkidiki, Greece. pp.36-45, ⟨10.1007/978-3-642-33412-2_4⟩. ⟨hal-01523056⟩