Captum 0.5
Captum is a PyTorch library for model interpretability. For this release, we expanded Captum with influential instances and added support for both similarity based influences and novel algorithms, TracIn and its variants. TracIn variants offer faster approximation of influence scores based on random projections for fully connected layers.
More specifically the new, influence, subsection of Captum includes:

SimilarityInfluence computes similarity scores between test and training examples using default (cosine or euclidean) or custom user definite metrics w.r.t. given input model layers.
