Kangaroo word a word that contains its antonym; for example: "covert" carries "overt", "animosity" carries "amity". Some compilers require that the letters of the joey word not be consecutive within the kangaroo word, or that the kangaroo and joey words must be etymologically unrelated. Kangaroo words were originally popularized as a word game by Ben O'Dell in an article for "The American Magazine", volume 151, during the 1950s. This was later reprinted in "the Reader's Digest". Kangaroo word A kangaroo word is a word that contains letters of another word, in order, with the same meaning. For example: the word "masculine" contains
Word-sense disambiguation supervised machine learning techniques. The 2000s saw supervised techniques reach a plateau in accuracy, and so attention has shifted to coarser-grained senses, domain adaptation, semi-supervised and unsupervised corpus-based systems, combinations of different methods, and the return of knowledge-based systems via graph-based methods. Still, supervised systems continue to perform best. One problem with word sense disambiguation is deciding what the senses are. In cases like the word "bass" above, at least some senses are obviously different. In other cases, however, the different senses can be closely related (one meaning being a metaphorical or metonymic extension of another), and in such cases