For example, for a sentence commenting on a digital camera like "40D handles noise very well", terms such as "noise" and "well" are significant feature terms for the node "noise".
the term "noise" becomes insignificant for its child nodes "noise +" and "noise -", since the hierarchical classification characteristic of the HL-SOT approach that a node only processes target texts which are labeled as true by its parent node ensures that each target text handled by the nodes "noise +" and "noise -" is already classified as related to "noise".