def pre_build(self):
Compute similarity matrix K ala text rank paper. Should this be
dataset/ETHPy150Open HPENetworking/topology_docker/lib/topology_docker/platform.py/DockerPlatform.pre_build--crossover with--dataset/ETHPy150Open kedz/sumpy/sumpy/annotators/_feature_extractors.py/TextRankMixin._textrank_kernel