Various term weighting strategies have been proposed and studied for the term-based representation (Amati and Van Rijsbergen, 2002;Singhal et al., 1996;Robertson et al., 1996).
existing studies on concept-based representation still used weighting strategies developed for term-based representation such as vector space models (Qi and Laquerre, 2012) and divergence from randomness (DFR) (Limsopatham et al., 2013a) and did not take the inaccurate concept mapping results into consideration.