Chemical Literature, Volume 19, Number 1, Spring 1967 Page: 4
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3. <COOPERATIVE EXPERIMENTS ON SELECTIVE DISSEMINATION OF INFORMATION
A. C. Diesing, F. A. Tate, S. W. Terrant, Jr., The Chemical Abstracts Service, The
Ohio State University, Columbus, Ohio 43210
Several one-year experiments on the selective dissemination of information (SDI)
are being conducted by Chemical Abstracts Service in cooperation with a number of
industrial organizations. The experiments are based on computer searches of magnetic
tape records produced at Chemical Abstracts Service. One experiment involves tapes
containing the bibliographic heading and full text of abstracts of articles appearing
in 32 journals of general chemical interest. Another experiment is based on tapes
prepared from Chemical Abstracts weekly issue indexes. In both experiments, the
utility of the tapes in SDI programs of the cooperating companies and the economics
involved are being determined. Details of the experiments and the results to date
are discussed in the paper.
4. AN EXPERIMENTAL SDI SYSTEM FOR THE PUBLIC HEALTH SERVICE - OFFICE OF PESTICIDES
Molly A. Wolfe and Saul Herner Herner and Company, 2431 K Street, N.W., Washington,
This paper describes an SDI system which was developed for the Office of Pesticides
of the Z5.S. Public Health Service as a by-product of the design and issuance of an
ex-erimental Literature Bulletin on the Health Aspects of Pesticides. The SDI system
is essentially tailor-made for the purposes of the audience of the Office of Pesticides.
Detailed face-to-face interviews were used to collect descriptive information regarding
the SDI recipients' activities and information interests. This descriptive information
was then converted to subject classes and sub-classes derived from an analysis of the
mission of the Office of Pesticides and of a sampling of the literature relating to this
mission. The documents put into the system were also described in terms of the same
classes and sub-classes. Depending on the requirements and interests of the recipient,
matches between profiles and document contents were made at either the class or sub-class
level or by means of coordination of classes and/or sub-classes. The typical monthly
SDI run produced an average of forty notifications per recipient. This, according to
the responses of the recipients, produced somewhat less than 25 percent of non-pertinent
material. An analysis is also being made of levels of failure to deliver pertinent
materials. These analyses of the results of runs are being performed via a special
quality control program. The profiles are modified as indicated, based on the result
of these analyses. In addition to quality of outputs analyses are also being made of
the total manhour expenditures and costs involved in the design, implementation, and
operation of the system. An analysis is also being made of the relative efficacy of
the SDI notifications as opposed to the monthly Bulletin, to determine what one does that
the other does not. All recipients of SDI notices also receive the Bulletin.
5. SELECTIVE INFORMATION ANNOUNCEMENT SYSTEMS FOR A LARGE COMMUNITY OF USERS
Van A. Wente, Gifford A. Young, National Aeronautics and Space Administration
Washington, D. C. 20546
Automatic selective dissemination of information (SDI) systems commonly match
document contents against individual user profiles to provide personalized current
information alerting services to scientists and engineers. In NASA's present large scale
SDI service, this technique is used biweekly to match about 1000 individual profiles
with the contents of 2000 to 3000 aerospace documents. The generally direct relationship
between number of users and computer time is a potential limit to the number of
users serviced by a given centrally operated system. In an evolutionary development,
NASA is operating a test program to extend tailored announcement service to large
numbers of users. A variety of subsystems of the total announcement service is being
developed to permit selections to be based upon either subject topic profiles or
organizational profiles. Output from matching such profiles may be reproduced by a
variety of printing techniques for broad or narrow distribution as appropriate to a
total information service. Profile groupings, resulting in use of a single selection
profile by a number of professional users, is found to be useful for reducing costs and
in certain cases for improved service, as is also true of organizational profiles
designed for use by specific branches, sections, or divisions and for decentralized
operation. In an organization with mixed research and mission-oriented goals, a
subject set of topics is desirable; for an organization oriented primarily toward
specific developmental objectives, an organizational approach is preferable. The
conclusions are based upon experience with the NASA/SDI and NASA/SCAN (Selected Current
Aerospace Eolces de olape
6. ISI'S EXPERIENCES WITH ASCA--A SELECTIVE DISSEMINATION SYSTEM
Eugene Garfield, Institute for Scientific Information, Philadelphia, Pa. 19106.
ASCA (Automatic Subject Citation Alert) is considered to be the first large-scale
SDI system made available on a commercial basis. Started in April 1965 by the Institute
for Scientific Information, ASCA is now being utilized on a regular weekly basis by
chemists and other scientists throughout the world. Originally based on the "citation
index" concept, ASCA now also includes words and other logic terms as questions. This
paper discusses differences and similarities between "citations" and "words" in retrieving
information from a large multidisciplinary file. The need of the information user
to monitor the information retrieved and disseminated by the system and to interact
continually with the system is a requisite for an effective alerting service. This
problem is explored and specific examples of techniques and policies designed to develop
efficient interest profiles are cited. Some of the human factors related to user-control
of the system are also discussed. The ability of a user to define his areas of interest
within the confines of any SDI system is also reviewed.
TUESDAY MORNING - Symposium on Progress Report on Modern Methods - D. H. Gould, Presiding
7. A REVIEW OF FEDERAL CHEMICAL INFORMATION AND DATA SYSTEMS. George R. Pielmeier,
John I. Thompson & Company, 1118 22nd Street, N.W., Washington, D.C. 20037.
Between June and December 1966, a survey was conducted' of approximately 125
Federal activities that collect, store, retrieve, or otherwise accumulate and process
chemical data and information. Data was assembled regarding the scope of the surveyed
activities, the subjects covered in their collections, the specific data elements
included in their records, the files that are maintained, and the outputs that
they produce. Although the survey was not exhaustive, its results indicate the level
of development of chemical information and data systems as they exist in the U.S.
Government today. The paper will describe the scope of the survey and summarize the
8. HIERARCHICAL NATURE OF CHEMICAL INFORMATION NEEDS. Boryd L. Mathers, Harold B. King,
Information Management, Incorporated, 1717 Pennsylvania Ave. N.W., Suite 1300,
Washington, D. C.
Studies of the chemical information needs of the chemical community which do not
recognize the hierarchical ordering of the members of the community and the attendant
variation in information requirements will fail to produce significant results.
Also, those studies which consider the "bench chemist's" requirements as the primary
statement of information needs for a national chemical information system will fail
to generate a valid set of requirements. The information needs of the chemical
community vary greatly from those which are required by managers and research leaders
to those which are required by project members and bench chemists. Information needs
are also time-ordered from those which are required at the beginning of a project to
those which are required during the completion phase. The in-house suppliers of
chemical information are usually aware of this problem and resolve it by developing
separate systems for management and research and then tailoring the outputs to meet
the specific needs of the system users during the various phases of their projects.
This paper also discusses some of the present concepts of the. "bench chemist" and
why these concepts have caused problems in defining system requirements.
9. THE IMPACT OF THIRD GENERATION ADP EQUIPMENT ON ALTERNATIVE CHEMICAL STRUCTURE
INFORMATION SYSTEMS, David Lefkovitz, University of Pennsylvania, Institute for
Cooperative Research, 3634 Walnut Street, Philadelphia, Penna. 19104
Current ADP chemical structure information systems are oriented largely toward
serial files stored on magnetic tape, and which process queries in batches. The
third generation computer equipment presents an added alternative to the system
designer which, when coupled with newly developed concepts of structure screen
keys and compacted structure storage can result in an inter-active or real time
chemical information system. In such a system, an interaction is effected between
the user and the automatic information processor in which the querist primes or
initiates the process and the machine responds with the information that requires
a further decision from the user in terms of query refinement or a command to
search and produce output. This process continues to cycle until the user has
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American Chemical Society. Division of Chemical Literature. Chemical Literature, Volume 19, Number 1, Spring 1967, periodical, Spring 1967; Philadelphia, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc5714/m1/4/: accessed August 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .