word matches. Implementation of this technique would necessitate extensive reprogramming of our system. Eventually, if we need to put CBAC on a cost-recovery basis, we will pursue one of these two possibilities.Few subscribers rely totally on CBAC for all literature searching. Most use it primarily to gain coverage of peripheral and/ or inaccessible journals. Virtually all users continue to subscribe to a few favorite journals for browsing and review Chemical Abstracts from time to time. One subscriber supplements CBAC coverage by perusal of Current Contents. I t is doubtful that computerized current awareness searching would ever replace journal browsing, even if coverage of literature were complete and thorough for every journal.
FUTURE PLANSIn addition to investigation of more economical programming techniques for services which appeal to small numbers of subscribers, consideration of several other aspects of our system has high priority. These aspects include: expansion of our general search strategy to provide for Boolean logic, infixes, and suffixes; retrospective searching; revision of feedback techniques to include more extensive analysis of results at less frequent intervals, rather than simple analysis of the interest level of the output from every issue. We also hope to be able to provide more personal attention to sharpening established profiles in order to trim operating expenses.
CONCLUSIONSOur four years' experience with CBAC has provided invaluable information in two respects. First, we learned a great deal about the literature-searching needs and habits of our research community by observing their reactions to CBAC's thorough coverage of a relatively small body of information. Secondly, we were exposed to the practical and economical problems of computerized free-text abstract searching by file inversion. These considerations have contributed to the over-all development of our current awareness system and will continue to help us define its future direction.
Retrieval systems based on the IBM-type variable field visual collation card can be converted to Termatrex systems as the collections grow in size and use. The conversion is accomplished by computer-generation of a corresponding term/document/ IBM card deck which is used to drill a set of Termatrex cards with the 5-400Termatrex drill. The term/document cards can then be used in the preparation of a number of subsidiary search tools. Sample index work sheets and the input procedures are also discussed.In the first paper of this series,' we described a visual collation or "peek-a-boo'' approach to the control of relatively small collections of documents. This system was based on the common IBM card and was characterized by the fact that it could be handled readily by the ultimate user on a total do-it-yourself basis. I t also could be operated with partial or total assistance from a central information group.In our experience with the IBM card-oriented peeka-boo technique, we found that several of the retrieval systems developed around it rapid...
Question 1. A terse conclusion which can act as a substitute or surrogate for a project outlines the meaning of a project in one or two sentences. The value of our present terse conclusion over the former system for reports and memos where no terse conclusion or
An optical coincidence retrieval system is described that is characterized by its simplicity of maintenance and use. The system is based on the readily available IBM card. In its simplified form, it can be operated wholly by a single individual, without recourse to expensive equipment. In its more advanced form it presents certain capabilities for machine manipulation that greatly add to its flexibility.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.