Mostly algorithms/platforms available today, including TurnItIn, Plagiarism Checker, NoPlag, Plagramme, PlagScan etc., usually check the similarity index which is just one part/way of plagiarism. There are many other methods to do plagiarism like idea plagiarism, language translation, Sentence rephrasing etc.
So which one is the most efficient algorithm/software available today which more efficiently and accurately addresses all types of plagiarism?