Exploring continual learning strategies in artificial neural networks through graph-based analysis of connectivity:...

Artificial Neural Networks (ANNs) aim at mimicking information processing in biological networks. In cognitive neuroscience, graph modeling is a powerful framework widely used to study brain structural and functional connectivity. Yet, the extension of graph modeling to ANNs has been poorly explored especially in terms of functional connectivity (i.e. the contextual change of the activity's units in networks). In the perspective of designing more robust and interpretable ANNs, we study how a brain-inspired graph-based approach can be extended and used to investigate ANN properties and behaviors. We focus our study on different continual learning strategies inspired by the biological mechanisms and modeled with ANNs. We show that graph modeling offers a simple and elegant framework to deeply investigate ANNs, compare their performances, and explore deleterious behaviors such as catastrophic forgetting.