I am currently reading a paper called "Dynamic Edge-Conditioned Filters in Convolutional Neural Networks on Graphs"Dynamic Edge-Conditioned Filters in Convolutional Neural Networks on Graphs (2017, CPPR), and iI cannot understand the following sentence:
We identify that the current formulations of graph convolution do not exploit edge labels, which results in an overly homogeneous view of local graph neighborhoods, with an effect similar to enforcing rotational invariance of filters in regular convolutions on images.
What does this sentence mean?