1. The only difference between SimplE and CP seems to be that SimplE further uses inverse triples. The technical contributions of this paper are quite limited. 2. Introducing inverse triples might also be used in other embedding models besides CP. But the authors did not test such cases in their experiments. 3. It would be better if the authors could further explain why such a simple step (introducing inverse triples) can improve the CP model that much.
2. Introducing inverse triples might also be used in other embedding models besides CP. But the authors did not test such cases in their experiments.