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39 

SELECTIVE DISSEMINATION OF MARC: A USER EVALUATION 

Lorne R. BUHR: Murray Memorial Library, University of Saskatchewan, 
Saskatoon, Saskatchewan 

After outlining the terms of reference of an investigation of user reaction 
to the selective dissemination of MARC records, a summary of the types 
of users is given. User response is analyzed and interpreted in the light of 
recent developments at the Library of Congress. Implications for the future 
of SDI of MARC in a university setting conclude the paper. 

INTRODUCTION 

F. W. Lancaster ( 1968) in his detailed study of MEDLARS makes the 
following statement, which has application to all SDI work: "In order to 
survive, a system must monitor itself, evaluate its performance, and upgrade 
it wherever possible." ( 1) Since SELDOM operates in a fairly new field, SDI 
for current monographs, an evaluation is most important. To a great extent 
it must be made without reference to other systems since most of the 
operational SDI services deal with tape services in various fields of scientific 
journals, and although there are some parallels, there are numerous dif-
ferences. Whereas services such as Can/ SDI cater primarily to the natural 
and applied sciences, SELDOM opens up the possibilities for SDI in the 
humanities and social sciences. 

The background to the SELDOM Project at the University of Saskat-
chewan has been outlined earlier by Smith and Mauer hoff ( 1971) and 
will not be repeated here. (2) After five months of operation a major question-
naire was sent out to each of 121 participants in the experimental SELDOM 
service. This questionnaire was based almost entirely on the one used by 
Studer ( 1968 ) in his dissertation at Indiana State University. (3) The general 
purpose of the study was to elicit user reaction to SELDOM, their eval-

Material appearing in this paper was originally presented at the third 
annual meeting of the American Society for Information Science (Western 
Canada Chapter), Banff, Alberta, October 4, 1971. 



40 Journal of Library Automation Vol. 5/1 March, 1972 

uation of its usefulness, time necessary to scan the weekly output, sugges-
tions regarding continuance of the service, etc. Besides this general purpose, 
the gathering and analyzing of data on SELDOM will be useful to the 
library administration in determining the future of an SDI service of this 
nature. A separate cost study is being prepared in this connection. 

Several factors prompt a cautionary stance in assessing the value of an 
SDI system on the basis of one questionnaire: ( 1) There is no control 
situation to which we can compare SELDOM, i.e., there was no systematic 
service for current awareness in the field prior to the advent of SELDOM. 
Faculty and researchers were dependent on their ingenuity to ferret out 
information on new books which were pertinent to their field of research 
and instruction. SELDOM is therefore being compared to a conglomera-
tion of ad hoc methods which may be as numerous as the individuals using 
them. Therefore, we must be cautious or we will tend to say, "Something 
in the field of current awareness is better than nothing," when we really 
do not know what that "nothing" is. (2) Although SELDOM had been 
operational for some twenty weeks when evaluation began, this is a rela-
tively short period on which to base an assessment. On the other hand 
Studer's evaluation was based on the experiences of thirty-nine users and 
covered only eight weekly runs against the MARC tapes scheduled on an 
every other week basis. (3) SELDOM was implemented without any 
study to determine the adequacy of the ad hoc approaches, to which I 
have already referred, nor to assess the patterns of recommendation for 
purchase. It was assumed that there was a need for SELDOM and some 
of the response would indicate that this is a fairly valid assumption, since 
almost 90 percent of the respondents wanted the service continued. A 
random investigation in mid-August of 748 current orders in the acquisi-
tions department for books with imprint of 1969 or later revealed that 
ninty-five or 12~ percent referred to SELDOM as the source of information 
for a particular recommendation to purchase. This may or may not be 
significant since there is no way of assessing whether these items would 
have been recommended anyway, only later perhaps. 

One by-product of orders based on SELDOM information is that correct 
LC and ISBN numbers are given and with the capabilities of the TESA-1 
cataloging/ acquisitions system such orders can be expedited more quickly 
and can also be cataloged sooner than non-MARC materials, thus ostensibly 
getting the desired item to the requestor in less time than previously. 
SELDOM is valuable in our university setting, therefore, not only as a 
means of awareness of new items, but also in the actual retrieval of the 
item for the user, in this case through acquisition. Our analysis, however, 
must be directed to the effectiveness of SELDOM as an awareness service, 
vis-a-vis the ad hoc approach. 

USER GROUP 
Of 121 questionnaires sent out, seventy-seven or 63.5 percent were re-

turned. Six of these had to be rejected for the purposes of this study since 



Selective Dissemination of MARC /BUHR 41 

Table 1 

I. Library and Information Science 
A. On-campus 12 
B. Off-campus 17 29 

II. Social Sciences and Humanities 
A. On-campus 15 
B. Off-campus 2 17 

III. Natural and Applied Sciences 
A. On-campus 23 
B. Off-campus 2 25 

either only a few questions had been answered or a general letter had been 
sent instead of answering the questionnaire. Thus, the data presented in 
this study will be based on seventy-one completed questionnaires or 58.6 
percent return. Three additional verbal comments were made to the writer 
and thus we in fact heard from eighty or 66 percent of the users. The 
term "users" will designate the seventy-one who completed their question-
naires, although comments from the other nine individuals will also be 
referred to. 

The users have been grouped into three categories according to Table 1. 
Categorization was along fairly traditional lines, with category I being 
necessary because of the large number of people falling into this area. 
The seventeen off-campus users coming under designation (I) represent 
the library schools in Canada as well as librarians/ information scientists 
in Canada and the United States. The on-campus users are library depart-
ment heads and heads of branch libraries. 
- Included in the social sciences and humanities are the fields of psy-
chology, sociology, history, economics, English, commerce, classics, etc. 
The natural and applied sciences include all the health sciences plus 
physical education since the two profiles in that area are tending toward 
the health sciences. Engineering, poultry science, physics, chemistry, bi-
ology, etc. , are represented here. 

OBSERVATIONS 

A sample of the questionnaire used appears on p.47-50 and includes a 
tally of the number of responses for each possible alternative answer to each 
question. In some cases the total number of replies for a question is less than 
seventy-one. This is explained by the fact that some questions on some 
questionnaires were not answered or were answered ambiguously so they 
could not be tallied. 

Generally speaking, users found SELDOM to be good to very good in 
providing SDI for new English monographs. 25.8 percent of the users 
found the lists very useful while 48.5 percent said they were useful. Six 
users said the listings were inconsequential for their purposes; in several 



42 Journal of Library Automation Vol. 5/1 March, 1972 

instances this may be due to poor profiling or profiling for a subject area 
in which little would appear on the MARC data base. 

23.6 percent of the users indicated that in most cases items of interest 
found on the SELDOM lists were previously not known to them. 45.8 
percent said that "of interest" items were frequently new. 76 percent of 
the group believed that the proportion of "of interest" items which also 
were new was satisfactory, a percentage which speaks well for the currency 
and effectiveness of an SDI capability. 

One of the chief drawbacks for which SDI services are often cited is 
the absence of evaluative commentary or abstract material to accompany 
the citations. Some tape services do provide either an abstract or a good 
number of descriptors, and this has proved to be an asset in helping the 
subscriber. SELDOM is based on the MARC tapes which provide complete 
cataloging data but do not give either evaluations or a multiplicity of 
descriptors. (Some indications are that the information now available in 
Publishers' Weekly might at some time in the future be added to the 
MARC tapes. ) Interestingly enough, 83.5 percent of the users said the 
information included in the entries was adequate to determine whether 
an item was of interest or not. Predictably, title, author/ editor, and subject 
headings were the three indicators, in that order, which were found most 
useful in making evaluations. This is significant since titles in the humani-
ties and some of the social sciences, particularly, are often not as specific 
in describing the contents of a work as are titles in the physical sciences. 

63.5 percent of the users indicate that SELDOM information is used 
for recommending titles for acquisition by the library. As a result it is 
quite possible that purchasing in the areas covered by SELDOM profiles 
may increase and the tendency to broaden the collection should increase. 
Unfortunately, no pattern of pre-SELDOM recommending for purchase 
is known. Some instructors use the weekly printouts to keep current biblio-
graphies on hand both for teaching purposes and for research purposes. 
Since over half the users ( 55.8 percent) needed no more than ten minutes 
per week to scan the printouts, there is no indication that excessive time 
is taken up in the use of such an SDI service. 

In reply to the question, "Would you be willing to increase the number 
of irrelevant notices received in order to maximize the number of relevant 
ones?" opinions were nearly balanced with 58 percent replying in the 
affirmative and 42 percent answering negatively. On the other hand, 
increases in the MARC data base expected some time in 1972 when other 
Roman alphabet language imprints and records for motion pictures and 
filmstrips are added, did not seem problematic with only 25 percent of 
users asking that an upper limit be placed on the quantity of material 
retrieved by their profiles. Numerous individuals (thirty ) responded fav-
orably to the prospect of wider language coverage by MARC. On the other 
hand, several individuals commented that non-English output on SELDOM 
would not enhance the service for them, and this likely reflects languagt 



Selective Dissemination of MARC /BUHR 43 

capabilities more than a lack of non-English material in their subject area. 
The question regarding format brought interesting comments, especially 

from library personnel and off-campus librarians: "Computer type format 
is often confusing." "A book designer should be consulted to improve the 
format." "Spacing could be improved to separate title and imprint infor-
mation from subject headings and notes at foot of entry. Would make 
scanning easier." 

Questions fourteen, nineteen, and twenty-one provide an overall sum-
mary of user reaction. 88.6 percent of users want the service to continue. 
Overall value of SELDOM was rated "very high" by 11.3 percent, "high" 
by 33.8 percent, "medium" by 42.2 percent, and "low" by 12.7 percent. 
SELDOM served to demonstrate the possibility of SDI for monographs 
"amply" according to 36.6 percent of users, "adequately" to 50.6 percent 
of users, and "poorly" to 12.65 percent of users. There was less certainty 
on how such a program should be administered or coated, particularly 
since a long-range cost study was not yet available. Clearly those who 
were impressed with SELDOM's effectiveness and future possibilities 
wanted other faculty to have the same opportunities, yet they cautioned 
against a blanket service. One comment sums this up best, "It should be 
available to anyone who has a perceived need for it-but require them 
to at least make the effort of setting up the profiles, etc." Many of the 
less than enthusiastic comments about SELDOM could be correlated with 
little or no user feedback to the search editor in order to improve relevancy 
and recall. User education in this regard is crucial in order that all users 
fully understand the possibilities and limitations of the SDI service. The 
success of any existing SDI service in the periodical literature has hinged 
on a good data base and up-to-date, specific profiling according to Smith 
and Lynch ( 1971 ). ( 4) The effectiveness of the profiling is a direct function 
of the ingenuity and persistence of the user and the profile editor. 

DISCUSSION 

This study has attempted to weigh the usefulness of an SDI service 
primarily with regard to its utility as a current awareness service. SELDOM, 
in order to be worthwhile, must either be faster or broader in its coverage 
than existing services. Two comparisons readily arise out of the com-
mentary of the users. Some library science professors felt that the LC 
proofslip service was just as fast as SELDOM and thus there was no 
advantage in having the latter when the former was available. A study 
done at the University of Chicago by Payne and McGee ( 1970) repudiates 
this argument fairly effectively. ( 5) Findings at Chicago show that MARC 
is faster than the corresponding proofslips. A number of users rely heavily 
on publishers' blurbs and prepublication notices and find that often books 
for which records appear on SELDOM are already on the library shelves. 
This observation is not altogether an indictment of SELDOM since another 
user observed that he appreciated being able to have the hard copy im-



44 Journal of Library Automation Vol. 5/1 March, 1972 

mediately; and in some cases he might not even have known about the 
item except for SELDOM. Some users mentioned that waiting for evalua-
tive reviews could put one at least a year behind just in placing the order 
for the book, let alone receiving it. 

SELDOM has the virtue of informing individuals of the existence of 
new books, but the delay in having the actual item might be problematic, 
so one question was directed to this consideration. Some people felt that 
it was at least worth something to know that a book existed even if one 
could not consult it immediately. Numerous complaints were aired re-
garding the slowness of obtaining items ordered through a library's ac-
quisitions department. In fact one user said this slowness meant he had 
to purchase personal copies of items he wanted/ needed. As indicated 
earlier in the introduction, the TESA-1 acquisitions-cataloging routine at 
the University of Saskatchewan library does have the capability to speed 
up actual receipt of books by the patron. 

A recent development at the Library of Congress has definite implica-
tions for the future of SELDOM and any other MARC-based SDI pro-
grams. The CIP (Cataloging in Publication) 0 program initiated this 
summer means that LC will now be able to make available cataloging in-
formation, except for collation, for books about to be published, at a time 
factor of up to six weeks before publication. Such MARC records will 
have a special tag designating them as CIP material. Furthermore, CIP 
records will appear only on MARC, the number predicted is 10,000 for 
the first year and 30,000 by the third year, a figure which would include 
all American imprints. (6) MARC-OKLAHOMA o o has already surveyed the 
subscribers to its SDI Project to determine whether they would prefer 
to receive both CIP MARC records and regular MARC records or only 
one of the two categories. Users preferred to receive both types of infor-
mation and appropriate changes have been made to the Oklahoma SDI 
programs. (7) Beginning with September MARC CIP records will appear 
and present information on books thirty to forty-five days before they are 
published. 

Several library personnel appreciated the usefulness of SELDOM as 
an outreach service of the university library into the academic community. 
They see SELDOM as a public relations tool. Numerous efforts are at the 
present time being made by librarians to alert individuals to materials in 
their several fields of interest, and SELDOM can play an important role 
in providing an active dissemination of information on a systematic basis. 
This is the direction in which we need to move so that our role becomes 
both that of a collector of information and a disseminator of information. 
Special librarians have been doing this kind of thing for years and SEL-
DOM allows for speCialized service to a larger user group. 

IMPLICATIONS AND CONCLUSIONS 
1. An SDI service based on MARC can be helpful in building a bal-

anced library collection depending on the efforts of faculty and/ or bib-



Selective Dissemination of MARC /BUHR 45 

liographers in setting up their proRles and maintaining them. The article 
by Ayres ( 1971 ) is particularly good on this aspect. ( 8) The parameters of 
the MARC data base must constantly be kept in mind, just as the constraints 
of the ad hoc methods must be considered in any comparisons. Pub-
lishers' blurbs in journals have the limitation of not systematically covering 
all the publications in a given subject area; book reviews tend to appear 
too late to allow users to receive current information on new books; SEL-
DOM corrects the first shortcoming at the expense of not having the eval-
uations appearing in book reviews. On the other hand MARC tapes do 
represent the cataloging of books in the English language by one of the 
largest national libraries in the world, and thus provide a coverage which 
is hard to duplicate by any one other alerting service. 

2. Comments, especially from users in the social sciences and humani-
ties, indicate that an SDI system for new monographs has greater pertinence 
in their area than perhaps in the natural and applied sciences simply be-
cause of the nature of research done in the two areas. A recent study by 
J. L. Stewart ( 1970) substantiates this factor for the field of political 
science. ( 9) His detailed analysis of the fatterns of citing in the writings ap-
pearing in a collective work in politica science indicated that 75 percent 
of such citations were from monographs leading him to the obvious con-
clusion that "monographs provide three times as much material as do 
journals" in the field of political science. By contrast, journals are likely 
more crucial for the fields of natural and applied science, and provide the 
key access point for vital information. 

3. SDI of MARC, most users felt, should demand a fair amount of 
effort on the part of users to assure that the service would obtain optimum 
return for money invested. A blanket service to all faculty would be waste-
ful since many faculty would not have a perceived need for it and others 
would not use it enough if it was simply offered free to everyone. Comments 
tended to favor making contact through the departmental library repre-
sentative and channel weekly printouts through this individual. A cost 
study will help determine whether it is economically feasible to operate 
SELDOM in an academic setting with at least 100 users. If current sub-
scription costs for SDI services such as those offered by Can/SDI of the 
National Science Library, Ottawa can be maintained, and early indications 
are that they can, a cost of $100 per profile per year may be feasible bring-
ing the annual expenditure for 100 users to $10,000. A chief variable which 
makes effective costing difficult is the variation in the number of records 
appearing on each weekly tape and this is a variable which can only be 
dealt with by prediction on the basis of the number of records on past 
tapes. 

4. SELDOM has the virtue of adding a major role of dissemination of 
information to libraries which up until now have primarily operated as 
starers of information. 





-

Selective Dissemination of MARC/BUHR 47 

822 33~ SHAKESPEARE WILLIAM 

FLEAY. FREDERICK GARO. 1831-1909. 

SHAKESPEARE MANUAL. 

NEW YORK.AMS PRESS<1970> 

XXIII. 312 P. 19 CM. 

lC 76-130621 
PR2895 

P1002 EN 01 TW 000 WT 000 S R0252 FC LENG 
822.33 ISBN 0~0~02~08~ 

SELDOM Evaluation Questionnaire 

l. What is your feelin g about the SDI lists as a source for finding out 
about the existence of newly published works in your fields of interest? 
Would you say that the lists provided a source which was: 
(a) very useful (b) useful ( c ) moderately useful (d) inconsequential 

18 34 12 6 
2. Do you feel that the SDI lists brought to your attention works of in-

terest which are not generally cited b y other sources that you use to 
learn of new publications? 
(a) many works (b ) some works (c) a few works (d) none 

10 39 19 2 
3. How would you characterize your feeling about the relative propor-

tions of the items "of interest" ( relevant items) and "those not of 
interest" (irrelevant items) included in the SDI lists? 
(a) the proportion of relevant items in the lists was satisfactory. 57 
(b) the proportion of irrelevant items in the lists was too high. 13 



48 Journal of Library Automation Vol. 5/1 March, 1972 

4. It is inevitable that some "not-of-interest" items are included in the 
SDI lists. Was the inclusion of irrelevant notices bothersome to you? 
(a) yes ( b ) no 

6 65 
REASONS: 

5. On the other hand, it is possible that for any given search run, some 
relevant items in the file are missed. The chance of relevant items 
being missed can generally be minimized by certain search adjustments, 
but with a resulting increase in irrelevant notices. Would you be will-
ing to increase the number of irrelevant notices received in order to 
maximize the number of relevant ones? 
( a) yes ( b ) no 

40 29 
REASONS: 

6. The SDI lists notified you of an average of--items per list which you 
judged to be "of interest." On a purely quantitative basis, would you 
say that this number was satisfactory, or for some reason too small or 
too large? 
(a) satisfactory 

48 
( b ) too small 

16 
( c ) too large 

1 

7. When the input to the MARC file is increased, your SDI output would 
also likely increase. Do you feel that you would like to be able to set 
some arbitrary upper limit on the quantity of items included in each 
SDI list even at the risk of missing a number of relevant items? 
(a) yes (b) no If yes , Maximum number__ _____________ _ 

17 51 

REASONS: 
8. The SDI lists alerted you to a number of items which you judged to 

be "of interest." Would you say that "of interest" items were new to 
you? 
(a) in most cases (b) frequently (c) occasionally (d) seldom 

17 33 17 5 

9. Do you feel that the proportion of items "of interest" which were also 
"new" to you was: 
(a) satisfactory (b) too low 

54 17 

10. Would you say that, in general, information given for the entries in the 
SDI lists is adequate to judge whether an item is or is not of interest 
to you? 
( a) yes ( b ) no 

58 10 

11. What elements of the entry did you most often find useful in making 
evaluations? 
(a) author/ editor (b) title (c) publisher (d) series note (e) sub-

38 55 9 4 35 
ject headings (f) classification numbers (g) other (please specify) 

8 1 



Selective Dissemiootion of MARC /BUHR 49 

12. What is the primary use to which you put the SDI information? 
(a) recommendation for library acquisition (b) personal purchase of 

51 12 
item (c) other (please specify) 

15 

13. If your recommendation originates the library order for a publication, 
it will be some time before the work is available; and even if already 
on order, most of the publications included in your lists were probably 
too new to be available from the library at the same time you received 
the list. Do you feel that this diminishes the value of the SDI service? 
(a) significantly (b) somewhat (c) negligibly 

2 w ~ 
For what reasons? 

14. A potential value of SDI service, based on the large volume of newly 
published works cataloged by and for the Library of Congress, is to 
bring together in one list timely notices for those works in the file 

which correspond to your several fields of interest. Do you feel that 
the experimental SDI service demonstrated this capacity? 
(a) amply (b) adequately (c) poorly 

26 36 9 

15. Is the format of the SDI notices satisfactory? 
(a) yes (b) no 

61 9 
If not, what format would you suggest? 

16. Is the distribution schedule of once a week satisfactory? 
( a ) yes ( b ) no 

71 0 
17. On the average, how much time would you estimate it took to examine 

an SDI list? Roughly: 
Minutes: (a) 5 (b) 5-10 (c) 10 (d) 10-15 (e) 15 (f) 15-20 (g) 20 

23 16 9 11 5 1 5 

18. A possible by-product of this SDI service is the building up of a cum-
ulative MARC tape file which can be searched in various ways by 
computer. Would you make use of such a file? 
(a) yes (b) no 

40 18 
If no, for what purposes? 

19. Judging from your total experience with the SDI service, would you 
characterize its overall value to you as: 
( a) very high (b) high (c) medium (d) low 

R 24 30 9 



50 Journal of Library Automation Vol. 5/1 March, 1972 

20. The MARC file at present represents English monographs cataloged 
by the Library of Congress on a week-by-week basis. Sometime in 
1972, the Library of Congress will begin to add some non-English 
monographs to the MARC file. Keeping in mind the forthcoming 
expanded MARC file on which future SDI service would be based, do 
you feel that its value to you would then be: 
(a) increased (b) the same (c) less 

30 33 7 

21. Do you personally want this SDI service to be continued? 
(a) yes (b) no (c) it doesn't matter 

~ 3 5 
22. Do you 

faculty? 
(a) yes 

feel that this SDI service should be offered to the entire 

42 

REASONS: 

(b) no 
14 

23. Do you feel that this SDI service should appropriately be made avail-

able by the university, i.e., that the university should organize and 
administer the service? 
(a) yes ( b ) no (c) don't know 

36 5 23 
24. Do you feel that the university alone should pay for this faculty SDI 

service? 
(a) yes (b) no (c) don't know 

30 6 25 
25. Optional: General comments, pros and cons, elucidation of above re-

plies, attitudes, suggestions, etc., concerning the SDI service.