Full Idea
One hybrid theory of concepts says they have both a core and an identification procedure. The core is a definition (necessary and sufficient conditions), while the identification procedure consists of a prototype (the properties typical of a category).
Gist of Idea
One hybrid theory combines a core definition with a prototype for identification
Source
Edouard Machery (Doing Without Concepts [2009], 3.3.1)
Book Reference
Machery,Edouard: 'Doing Without Concepts' [OUP 2009], p.65
A Reaction
This combines the classical and prototype theories of concepts. I like it because it fits the idea of 'mental files' nicely (see Recanati). If concepts are files (as in a database) they will have aspects like labels, basic info, and further details.