Persons performing research in the field of information retrieval need to be concerned with likenesses as well as differences in various automated systems. This paper uses the same computer routines to compare two dictionaries of different sizes, having some similar features and some different features. It compares the use of the dictionaries in building their input file, and discusses the frequency of occurrence of descriptors and their combining power, with an analysis of the data generated.

Computer scheduling of papers as it was developed for the 1960 meeting of the Federation of American Societies for Experimental Biology (FASEB) is described. The FASEB meeting is the largest scientific meeting held in the United States each year. The technique developed for FASEB can be applied to schedule any meeting with parallel sessions.