23. Means according to claim 13 wherein the means for determining a corresponding set of equivalent words for a given one of the query words comprises means for selecting words in the data base which are acceptable misspellings and acceptable inflections of the query word.
23. Means according to claim 13 wherein the means for determining a corresponding set of equivalent words for a given one of the query words comprises means for selecting words in the data base which are acceptable misspellings and acceptable inflections of the query word. 24. Means according to claim 23 wherein the means for selecting words which are acceptable misspellings and acceptable inflections comprises means for selecting words which have an exact match, a character transposition, a character deletion or a character insertion between a stem portion of a query word and the beginning characters of a data base word.