6. The method of claim 4 , further comprising: applying frame extraction, to a second corpus, in order to attempt to identify, for each statement of the corpus, an object and a sentiment expressed about the object; identifying a first plurality of object-specific corpuses, each of which is a subset of the second corpus, where all the statements, of an object-specific corpus, are about a same object; categorizing a polarity and intensity of each statement of each object-specific corpus, wherein each object-specific corpus is a member of the first plurality of object-specific corpuses; determining a second net polarity measure and a second net intensity measure, for each object-specific corpus, as a function of the categorization, wherein each object-specific corpus is a member of the first plurality of object-specific corpuses; determining a median net polarity measure, from the second net polarity measures; determining a median net intensity measure, from the second net intensity measures; and placing each of the first and second dividing lines, respectively, at a location that approximately intersects the median net intensity and median net polarity measures.
6. The method of claim 4 , further comprising: applying frame extraction, to a second corpus, in order to attempt to identify, for each statement of the corpus, an object and a sentiment expressed about the object; identifying a first plurality of object-specific corpuses, each of which is a subset of the second corpus, where all the statements, of an object-specific corpus, are about a same object; categorizing a polarity and intensity of each statement of each object-specific corpus, wherein each object-specific corpus is a member of the first plurality of object-specific corpuses; determining a second net polarity measure and a second net intensity measure, for each object-specific corpus, as a function of the categorization, wherein each object-specific corpus is a member of the first plurality of object-specific corpuses; determining a median net polarity measure, from the second net polarity measures; determining a median net intensity measure, from the second net intensity measures; and placing each of the first and second dividing lines, respectively, at a location that approximately intersects the median net intensity and median net polarity measures. 7. The method of claim 6 , wherein the second corpus is the same as the first corpus and the first object-specific corpus is a member of the first plurality of object-specific corpuses.