Relevance-based investigation of the previously identified similarly activating channels. Centre: reference examples for the identified filters with a similar underlying theme. Left: exemplary input from class ‘remote control’ with per-channel activation maps and respective ground-truth CRP relevance maps, as well as their aggregation (bottom left). Right: exemplary input from class ‘laptop computer’ with per-channel activation maps and respective true class CRP relevance maps, as well as their aggregation. Conditional relevance attributions R ( x | ) are normalized with respect to the common maximum amplitude. Similarly activating channels do not necessarily encode redundant information, but might be used by the model for making fine-grained distinctions, which can be observed from the attributed relevance scores. Credit: iStock.com/ezza116, iStock.com/sqback.
