We have been proposing a framework Rough Non-deterministic Information Analysis (RNIA), which handles rough sets based concepts in not only Deterministic Information Systems (DISs) but also Non-deterministic Information Systems (NISs). This paper surveys the overview of RNIA, and clarifies modal logic concepts, i.e., certainty and possibility, or the minimum and the maximum values, for analyzing data tables with non-deterministic information.
['Hiroshi Sakai', 'Hiroshi Kimura', 'Michinori Nakata']
An Overview of a Software Tool in Rough Non-deterministic Information Analysis