expressed as daily highs and lows; rainfall for a region expressed as high and low
values. Any computation done using rough values can be reformulated in terms of
conventional numbers. However, the use of rough values provides a better semantic
interpretation of results in terms of upper and lower bounds. Moreover, some of the
numeric computations cannot be conceptualized without explicitly discussing the
upper and lower bound framework. The notion of intervals and rough values is one
of the significant components of granular computing as evidenced in some of the
recent work