Fixed several issues related to information content (IC):
- Previous version would take hypernym ICs as alternatives if no information was available for a synset. To make it compatible with previous experiments (Pedersen) we now take zero as value. This means no similarity score is given
- There appears to be a discrepancy between hypernym chains we get and that are also in WordNet3.0 online and the IC values. IC values for synsets and LCS are the same whereas the hierarchy suggest hypernym relation. This should not happen so we now check for this and assume the IC equal values to indicate synonymy