Thanks for your remark Pierre Rossouw, but it seems you did not understand me quite right.
I’m not telling AI is a CHILD of Big Data, you won’t find such an argument in this humble review. The only thing I wanted to highlight in the first paragraph — which I suppose became an issue — is that the knowledge in the sphere of AI is well-used and get its practical realization in Big Data analytics right now. Thus, I dared to use the word BRANCH, that may offend someone’s ear.