1. In the JURIS system, the searcher may first have the main headings in an outline of some subject displayed. He may then have the subheadings under any desired main heading displayed. Sub-subheadings under any subheading may also be displayed and so on. Finally, the searcher may select an indexing term that appears opposite a sub-subheading. Using this indexing term, the searcher may have all documents retrieved to which the term has been assigned by an indexer. In the JURIS system, the outlines are all taken from portions of the West topical index, with West's permission, and the indexing terms are West key numbers which have been incorporated into the stored documents. B. W. Basheer, JURIS: Justice Retrieval and Inquiry System, in Automated Law Research, supra note 3, at 60–61.
2. See pp. 211–12 supra.
3. See p. 197, supra.
4. Reed C. Lawlor, Amplification Factor of an Information Retrieval System, 15 Jurimetrics J. 289, 301 (1975).
5. There is one important advantage that a computer possesses over a library for intelligence amplification. This is in the area of fact retrieval. Few library systems are indexed for facts except in a limited way. A computer has the advantage that it is capable of storing the full texts of the cases, so that cases dealing with facts represented by descriptive words familiar to the user can be retrieved readily with a computer system but only slowly with a library indexing system. Consequently, in the fact retrieval area, the amplification factor of a man-computer team is much higher than average.