UniMorph resources are rarely original resources, but rather extracted from existing material, 6 such as Wiktionary (Kirov et al., 2016, first-generation UniMorph inventories) and other dictionaries, bootstrapped from morpheme inventories or corpora (as described here), or generated by rulebased morphologies.
this conversion-based approach means that the segmentation and annotation principles of the underlying resource tend to be preserved.