15. The method of claim 12 , further comprising determining a count for each of the extracted phrases in the plurality of textual feedback entries, wherein the score for each of the extracted phrases is determined based, in part, on a respective count of the extracted phrase and a number of the textual feedback entries.
15. The method of claim 12 , further comprising determining a count for each of the extracted phrases in the plurality of textual feedback entries, wherein the score for each of the extracted phrases is determined based, in part, on a respective count of the extracted phrase and a number of the textual feedback entries. 17. The method of claim 15 , further comprising determining the first gradation for the first visual indication based on a product of the respective count of the first phrase and an inverse document frequency value.