1. A method comprising: identifying, by a processor, an original topic representation for a set of electronic documents stored at least temporarily in a non-transitory storage media; performing, by the processor, an informativeness analysis on the original topic representation; performing, by the processor, a topic consistency analysis on the original topic representation; performing, by the processor, a topic redundancy analysis on the original topic representation in view of a second topic representation; and generating, by the processor, a refined topic representation based on the informativeness analysis, the consistency analysis, and the redundancy analysis.