Disclaimer in an intro to a reported list of selected items.
To convey that the selection "process" of items to include from the whole was somewhat subject to the sporadic nature of human thought, mood, experience, etc. as opposed to the methodical consistency of a computer program.
"The selection of entries for this report was [admittedly] _____________, though the data..."
Space is crucial, so a single adj. is preferred, but an adjectival phrase or even suggested rewrites are welcome if they better express the intended idea.