Abstract
In this paper, we have proposed a cascaded ensemble method based on Random Forest, named as Ensemble-of-Forest, (EoF). Instead of classifying huge amount of data with a single forest, we proposed two stage ensemble method for Multimodal Brain Tumor Segmentation problem. Identification of Tumor region and its sub-regions poses challenge in terms of variations in intensity, location etc. from patient to patient. We identify the initial region of interest (ROI) by linear combination of FLAIR and T2 modality. For each training scan/ROI, we define a Random Forest as first stage of ensemble method. For a test ROI, collect a set of similarly seen ROI and hence forest based on mutual information criteria and collect majority voting to classify voxels in it. We have reported results on BRATS 2017 dataset in this paper.
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Acknowledgement
This work was supported in part by the Dept. of Electronics and Information Technology, Govt. of India (PhD-MLA/4(90)/2015-16).
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Phophalia, A., Maji, P. (2018). Multimodal Brain Tumor Segmentation Using Ensemble of Forest Method. In: Crimi, A., Bakas, S., Kuijf, H., Menze, B., Reyes, M. (eds) Brainlesion: Glioma, Multiple Sclerosis, Stroke and Traumatic Brain Injuries. BrainLes 2017. Lecture Notes in Computer Science(), vol 10670. Springer, Cham. https://doi.org/10.1007/978-3-319-75238-9_14
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