...although WordNet categories have intuitive names (English nouns or nominal expressions), they do not have intuitive identifiers (the WordNet API mainly uses numbers). Intuitive identifiers are mandatory for permitting people to read, write and update knowledge statements in text files, i.e. outside the graphical interface of a particular tool. This is a minimal requirement for knowledge sharing/re-use and also greatly simplifies the development of knowledge-based tools. Hence, we designed an algorithm to create intuitive identifiers for WordNet categories based on their names. This algorithm combines various heuristics we learnt from many trials.