What is more, there are some basic mathematical errors that should not appear in such a paper. On page 6-7, a metric is defined. For the terms u, first per digit absolute difference is introduced, which then suddenly switches to absolute difference of the whole numbers! E.g., for 915 and 277, the first would give |9-2|, |1-7|, |7-5| = 7 6 2, while the other one is |972-277| = 695, which is just not the same.
What is more, there are some basic mathematical errors that should not appear in such a paper. On page 6-7, a metric is defined. For the terms u, first per digit absolute difference is introduced, which then suddenly switches to absolute difference of the whole numbers! E.g., for 915 and 277, the first would give |9-2|, |1-7|, |7-5| = 7 6 2, while the other one is |972-277| = 695, which is just not the same.