For these experiments (and those in Section 6.3, where these clusters are used), we sweep the number of TIB clusters (excluding no-TIB) from 1 to 5.
one class is "no-TIB" and another is all remaining TIBs, combined, after isolating, iteratively, TIBs 7, 5, 1, and 6 in Dementia; TIBs 5, 6, {3, 4, and 7}, and {9 and 10} in Controls, and TIBs 4, 7, 1, and 6 in the combined set.