11. The computer program product of claim 7 further configured for constructing a plurality of value-word pairs for a product attribute, each value-word pair comprising a respective product attribute value associated with a corresponding comment word.
12. The computer program product of claim 11 wherein, for each respective product attribute value of the plurality of value-word pairs, the computer program product is further configured for determining a corresponding support value by plotting the respective product attribute value on a linear axis that represents a graduated range of variations in the product attribute.