16. A method as in claim 14 , wherein the step of filtering further comprises the steps of: determining a main component of each phrase template and/or non-contiguous phrase; determining a sub-component of each phrase template and/or non-contiguous phrase; calculating the probability distribution of the sub-component with respect to other words or phrases in the same context; and modifying the set of candidate phrases in accordance with the value of the probability distribution.
14. A method as in claim 9 , wherein the step of extracting candidate phrases from the text corpus further comprises the step of filtering the added phrase templates and/or non-contiguous phrases to eliminate phrase templates and/or non-contiguous phrases from the first set of candidate phrases in accordance with one or more predetermined criteria.