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COUNTER defines how this should work, see specifically points d. and e below ( from p.32 under Return codes and time filters, at http://www.projectcounter.org/r3/Release3D9.pdf) "c. All users' double-clicks on an http-link should be counted as only 1 request. The time window for occurrence of a double-click should be set at 10 seconds between the first and the second mouse-click. There are a number of options to make sure that a double click comes from one and the same user: 1. where only the IP address of a user is logged that IP should be taken as the field to trace double-clicks 2. when a session-cookie is implemented and logged, the session-cookie should be used to trace the double-clicks. 3. when user-cookies are available and logged, the user-cookie should be used to trace double-clicks 4. when the username of a registered user is logged, this username should be used to trace double-clicks. The options 1 to 4 above have an increasing level of reliability for filtering out double-clicks: option 1 has the lowest level of precision (and may lead to under reporting from the vendor perspective) while with option 4 the result will be optimal. d. The downloading and rendering of a PDF takes longer than the rendering of an HTML page. Therefore requests by one and the same IP/username/session- or user cookie for one and the same pdf should be counted as a single request if these multiple requests occur within a 30 seconds time window. These multiple requests may also be triggered by pressing a refresh or back button on the desktop by the user. e. When two requests are made for one and the same article within the above time limits (10 seconds for HTML, 30 seconds for PDF), the first request should be removed and the second retained. Any additional requests for the same article within these time limits should be treated identically: always remove the first and retain the second. (For further information on the implementation of this protocol, see Appendix D: Guidelines for Implementation)" Does anyone know how this is monitored? Andrea ******************************** Andrea Imre Electronic Resources Librarian Southern Illinois University Carbondale Morris Library 605 Agriculture Dr Carbondale, IL 62901 phone: 618-453-4339 fax: 618-453-3452 e-mail: [log in to unmask] -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Crawshaw, Lesley A Sent: Thursday, July 09, 2009 6:25 AM To: [log in to unmask] Subject: RE: [lib-stats] Cost per use Hi Chan, It is a very interesting question. However, I understood that the COUNTER standard prevented this possible hyping of usage. I understood that if the html was the first full text content accessed followed by the downloading of the full text pdf that this usage would only count once not twice. Could someone more expert in COUNTER advise me if this is incorrect? Cheers Lesley Lesley Crawshaw Knowledge & Business Intelligence Consultant Learning and Information Services University of Hertfordshire Tel: 01707 284662 Joint List Owner: [log in to unmask] -----Original Message----- From: [log in to unmask] [mailto:[log in to unmask]] On Behalf Of Hana Levay Sent: 08 July 2009 21:58 To: [log in to unmask] Subject: Re: [lib-stats] Cost per use Hi Chan, At University of Washington we've been starting to look at cost per use for html or pdf downloads, versus total downloads. When you look at various platforms, they might for example force the user to view the HTML before downloading the PDF, and so artificially raise downloads for HTML uses. We've tried finding cost per use for PDF only, and also tried PDF + 15% of the HTML downloads. We use 15% as a baseline, but have seen HTML percentages range from 4% to 122% of the PDF downloads. Using 15% as a baseline, one e-journal package went from $0.67 cost per use up to $1.09 cost per use. This is still very much in the experimental stage, and isn't affecting decisions at this time. But it is an interesting question. Hana Chan Li wrote: > Hello, > > I have a general question for this group. When you study the full-text > download usage for your resources or calculate the cost per use, are you > counting PDFs only or all downloads including HTMLs and PDFs? I think > that the cost per use for some packages might be so different between > counting only PDF uses and counting both. > > Any advices would be helpful, > Chan > > Chan Li > Data Analyst > California Digital Library > University of California, Office of the President > Tel: 510.987.9796 > Email: [log in to unmask] > > > -----Original Message----- > From: [log in to unmask] > [mailto:[log in to unmask]] On Behalf Of Celeste Feather > Sent: Tuesday, July 07, 2009 12:27 PM > To: [log in to unmask] > Subject: Re: [lib-stats] Cost per use > > Our OhioLINK consortium multi-publisher journal collection last year had > > an average DL cost of $4.00. The range was from $2 to $26. Needless to > say, in these times those publisher packages at the high end of the > range are not looked at very favorably. > > Celeste > > Lancaster, Charla Michelle wrote: >> Good Afternoon everyone! >> >> As I look at how we are using our online collection in terms of >> downloads, I'm wondering if anyone has decided upon a threshold in >> which your library has determined the cost outweighs the benefits of >> retaining an online database or e-journal. I realize many factors go >> into the ultimate decision, but some sort of guidance on a monetary >> amount would be useful. While $50.00 per download is too high, is >> $10.00? $2.00? >> >> I would be interested in hearing what your library has done in this > area. >> Thanks! >> >> Charla >> >> Charla Lancaster >> >> Collection Development Specialist >> >> Indiana University >> >> Wells Library E-1052 >> >> 1320 E. 10th St. >> >> Bloomington, IN 47405 >> >> Phone: 812-856-6842 >> >> Fax: 812-855-8068 >> >