Enhancing supervised classifications with metamorphic relations

We report on a novel use of metamorphic relations (MRs) in machine learning: instead of conducting metamorphic testing, we use MRs for the augmentation of the machine learning algorithms themselves. In particular, we report on how MRs can enable enhancements to an image classification problem of ima...

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Bibliographic Details
Main Authors: Xu, Liming, Towey, Dave, French, Andrew P., Benford, Steve, Zhou, Zhi Quan, Chen, Tsong Yueh
Format: Conference or Workshop Item
Language:English
English
Published: 2018
Online Access:https://eprints.nottingham.ac.uk/53764/
Description
Summary:We report on a novel use of metamorphic relations (MRs) in machine learning: instead of conducting metamorphic testing, we use MRs for the augmentation of the machine learning algorithms themselves. In particular, we report on how MRs can enable enhancements to an image classification problem of images containing hidden visual markers ("Artcodes"). Working on an original classifier, and using the characteristics of two different categories of images, two MRs, based on separation and occlusion, were used to improve the performance of the classifier. Our experimental results show that the MR-augmented classifier achieves better performance than the original classifier, algorithms, and extending the use of MRs beyond the context of software testing.