Keras implementation of the argmax-rule for LRP proposed in https://link.springer.com/chapter/10.1007/978-3-030-30179-8_16. Based on the INNvestigate repository https://github.com/albermax/innvestigate.
If you have a keras model model you can create an INNvestigate analyzer for your model with
analyzer = argmax_analyzer.Argmax(model)
A saliency map for a given input can then for example be created by using
analyzer.analyze(input)
For further details please refer to the original innvestigate repository https://github.com/albermax/innvestigate.