Programming of Reversible Systems in Computational Linguistics

Dr. Alfred Hoppe of Forschuugsgruppe LIMAS has developed a pro / cedure for a reversible data flow (Figure I). 'In the matrix/%hree ~ different quantities are connected together. For analysis~he grammatical description of an inflected form is determined by combining the inflection class with the ending. For example the German verb ~ehen is composed of the stem ~eh and the ending e_~u. The lexicon tells us that ~eh belongs to inflection class B. By combining the channels of inflection class B and the ending e__u.u /-. we are able to determine the grammatical description of the v ~ L? ) (which is in this case ambiguous ) . Each of these groups contains, ~ a series of binary variables whose value is either zero or one. The synthesis process unites the channels with the grammatical variables, the result being the appropriate ending.