pepc2004 t8

Slide1: 

infoconnex - a unifying information portal for the areas of psychology, sociology and pedagogics in Germany¹ Marc André Selig and Erich Weichselgartner Institute for Psychology Information (ZPID), Trier, Germany ¹Talk given at Pan European Portals 2004, University of Nottingham, UK Funded by

Motivation: 

Motivation Today‘s nomadic users want location independent 24/7 information access Internet portal Local library can‘t afford all journals („science journal crisis“) Pay-per-view/electronic document delivery Users have to look in various places (databases, OPACs, search engines, web catalogs, …) infoconnex: integrate across similar subjects; support search using thesaurus mapping [will be surpassed by vascoda: integrate across all subjects]

The partners: 

The partners The Information Center Education („IZ Bildung“) of the German Institute for International Educational Research (DIPF) in Frankfurt collects, systematizes, evaluates and edits information relevant to education.

The partners: 

The partners The Social Science Information Centre („IZ Sozialwissenschaften“) in Bonn collects and disseminates information on the current state of research and literature in the social sciences in the German-speaking countries, as well as, on the social science research in Eastern Europe. 

The partners: 

The partners ZPID is the Institute for Psychology Information for the German-speaking countries, creating electronic databases on literature, tests, audiovisual media, and Web resources to meet the information needs of scientists and mental health professionals.

The partners: 

The partners Acquisition of „content“ (negotiation of pay-per-view licenses) Special collection libraries Education (University Library Erlangen-Nuremberg) Social Sciences (University and Municipal Library Cologne) Psychology (Saarland University and the State‘s Library)

The products/databases: 

The products/databases The German Education Index http://www.fis-bildung.de/index_e.html Largest collection of educational literature in the German-speaking countries > 500,000 records (25,000 added per year) Scope: journals, books, chapters, and grey literature Subjects: Empirical Educational Research, Educational Policies and Administration, Vocational Education and Training, Adult Education, Media Education, Correspondence Courses, College and University, Continuing Education, Special Education, Social Work

The products/databases: 

The products/databases SOLIS - Social Science Literature Information System http://www.gesis.org/en/information/SOLIS/ Bibliographic database covering social science literature, which has been published in the Federal Republic of Germany, Austria and Switzerland. > 300,000 records (14,000 added per year) Scope: books, chapters, and articles Subjects: Sociology, Methods in the Social Sciences, Political Science, Social Policy, Social Psychology, Educational Research, Science of Communication, Demography, Ethnology, Historical Social Research, Labour Market and Employment Research

The products/databases: 

The products/databases PSYNDEX http://www.zpid.de/en/products/com/psyndex_info.php Abstract database of psychological literature from 1977 to present published in German (70%) or English (30%) from authors in the German speaking countries > 185,000 records (7,000 added per year) Scope: journals, books, chapters, dissertations and reports; audiovisual media, psychological tests Subjects: Psychology and related fields (Medicine, Linguistics, Criminology, Sports, Education, Sociology)

The products/virtual libraries: 

The products/virtual libraries Eduserver - Catalogue of web resources http://www.bildungsserver.de/index_e.html Provide comprehensive information on all levels and areas of education available online Scope: teaching materials, institutions, schools, events, people, etc. Primarily intended for the German audience

The products/virtual libraries: 

The products/virtual libraries SocioGuide – Catalogue of Web Resources http://www.gesis.org/en/socio_guide/index.htm Selected and commented Internet resources relevant to the social sciences > 3,000 records Based on clearinghouse system DBClear

The products/virtual libraries: 

The products/virtual libraries PsychLinker – Catalogue of web resources http://psychlinker.zpid.de/ Selected and commented Internet resources relevant to psychology > 2,500 records Regularly updated Indexed with meta tags (searchable) Joint product of ZPID/SULB and many volunteers Web-based content management system Classification in German only

More partners/services: 

More partners/services EZB – Electronic Journals Library (University Library of Regensburg) Determine journal access rights with respect to user affiliation Currently, the EZB contains 19,463 titles, among them 2,186 online-only journals, covering all subjects. 7,350 journals can be read free-of-charge. Additionally, the participating libraries offer full text access to the respective journals to which they subscribe Used by more than 250 libraries in Germany, Austria, Switzerland, Czech Republic, Italy, Croatia, Slovakia, Romania and USA German and English user interface

More partners/services: 

More partners/services ZDB – German Union Catalogue of Serials (Berlin State Library – Prussian Cultural Heritage) Tool for interlibrary loans and document delivery systems (JASON, subito) More than 1,100,000 serial titles from all periods, countries and languages More than 4,300 participating German and non-German European libraries Outside of Germany, the PICA foundation has made the complete ZDB data available through PiCarta International

More partners/services: 

More partners/services Subito e.V. Library document delivery service for articles and books Participating libraries from Austria, Germany and Switzerland supply the user directly with copies of articles from serials or books Direct delivery to the user's workplace (email, ftp, fax) Prices vary by user group (educational, commercial, private, library) 20,000 serials starting from 1992 Delivery to users (not libraries) in non German speaking foreign countries has been temporarily stopped due to a law suit by the International Association of Scientific, Technical and Medical Publishers (Stichting STM, Amsterdam) and the German National Booksellers Association

More partners/services: 

More partners/services Ex Libris Group SFX Link Server Linking services in the scholarly information environment Lets users navigate to the resources and services relevant to their search results, ideally delivery of full text to the desktop Large knowledge base of more than 1,000,000 serial titles Periodically updated and expanded Uses OpenURL standard EZB and subito services integrated (in infoconnex)

Future plans: 

Future plans Integration of international databases, e.g. ERIC (U.S. Department of Education), Sociological Abstracts (CSA, USA), PsycINFO (APA, USA), PASCAL (Institut de l'Information Scientifique et Technique, France), PSICODOC (Colegio Offcial de Psicólogos, Spain) Standardise terminology and spelling of the participating thesauri Integration into vascoda, thereby offering an English user interface

Open Linking: 

Open Linking Why Open Linking? This is a standard citation: van der Lubbe RHJ, & Keuss PJG: Focused attention reduces the effect of lateral interference in multi-element arrays. Psychological Research, 65(2):107-118, 2001. We would now like to link to this document. This is what the URL might look like: http://www.springerlink.com/app/home/contribution.asp?wasp=pg wf2q5lwg4rxn4f7qau&referrer=parent&backto=issue,4,6;journal,1 4,27;linkingpublicationresults,1:101575,1 Can you imagine how long this will stay valid?

Open Linking: 

Open Linking Trouble With Links Classic web links to scientific full texts come with a number of problems: They can be hard to come by They change at the publisher's whim Maintaining an up-to-date database of them is a herculean task We use Open Linking instead: an OpenURL is produced from bibliographic metadata.

Open Linking: 

Open Linking A Citation as an OpenURL Coming back to our citation: van der Lubbe RHJ, & Keuss PJG: Focused attention reduces the effect of lateral interference in multi-element arrays. Psychological Research, 65(2):107-118, 2001. It can be represented as an OpenURL: http://sfx.zpid.de:9003/sfx_local ?sid=infoconnex:zpid &__char_set=latin1 &genre=article &aulast=van der Lubbe &atitle=Focused attention reduces the effect of ... &title=Psychological Research &volume=65 &issue=2 &spage=107 &epage=118 &date=2001 &issn=0340-0727 (%20 presented as spaces for readability) Note that this representation is a direct derivation of the original citation. I do not need to know anything else to create this!

Open Linking: 

Open Linking Advantages Open Linking has a number of advantages: OpenURLs can be easily generated from relevant bibliographic information Somebody else determines the actual link target—the power of outsourcing! OpenURLs are persistent links, remaining valid for as long as you choose They can help solve the appropriate copy problem

Open Linking: 

Open Linking OpenURL in practice (source) Any portal, database system or web site can use an OpenURL. We link to them using elegant little graphics with the SFX emblem:

Open Linking: 

Open Linking OpenURL in practice (menu) A click on this button creates a new window, called the SFX menu. An Open Link Resolver finds information about the publisher and journal in question. It then generates a selection of links that can provide full-text access:

Open Linking: 

Open Linking OpenUrl in practice (target) Our user can now click on any of the targets provided to get full-text access to the article. Or he could select SUBITO to have the article delivered to him—slower but cheaper.

Integration: 

Integration Levels of Abstraction Integration of our databases into other portals made clear the necessity of a number of abstractions. As we strive to achive more complete integration into a growing number of portals, we continue to benefit from these lessons. Abstraction of services (authentication, linking, invoicing, payment) Abstraction of functions (search and retrieval) Abstraction of data

Integration: 

Integration Bibliographic XML Abstraction of bibliographic data was both the most difficult and the most rewarding issue. Development of an extensible XML representation Core schema includes Dublin Core and several standard enhancements Extensions cater to individual specialties of the project partners A perfect solution for one integrated portal. And then came the next....

Integration: 

Integration Bibliographic primitives The next big step was the flattening of data into a primitive XML-like representation. Clear distinction of search and output fields Forced engineers to clearly define a fixed field set at the onset Easy data manipulation, allowing efficient adoption for any purpose This is a complete, lossless representation!

Integration: 

Integration Primitive data: Sample <record> <AB>Lateral interference of nearby irrelevant flankers may be reduced when attention is already focused at a relevant position. This hypothesis was tested in 3 experiments with multi-element arrays consisting of one target and several neutral flankers with reaction time (RT) and proportion of ...</AB> <AUFU>Autor</AUFU> <AUFU>Autor</AUFU> <AU>van der Lubbe, Rob H. J.</AU> <AU>Keuss, Paul J. G.</AU> <CM>1011 experimental study</CM> <COU>NETHERLANDS</COU> <CS>Utrecht University, Utrecht; Psychological Laboratory</CS> ... <CT>Attention</CT> <CT>Concentration</CT> <CT>Lateral Dominance</CT> <CT>Inference</CT> <CT>Stimulus Parameters</CT> <CT>Reaction Time</CT> <DFK>0145850</DFK> <DT>10</DT> <DTVASC>article</DTVASC> <DT>Journal Article</DT> <EMAILO>r.vanderlubbe@xxxxx.xx (van der Lubbe, Rob H. J.)</EMAILO> <ISSN>0340-0727</ISSN> <JBD>65</JBD> <JHFT>2</JHFT> <JT>Psychological Research</JT> ...

Integration: 

Integration Data transformation We use a somewhat uncommon flow of information. Typical use: On-demand (on-access) transformation of data Flexible but slow, doesn't scale well to heavy use. Our system: In-advance transformation and caching Nearly as flexible, disk intensive, scales very well.

Integration: 

Integration Technical details We cache fragments of responses, and never complete query results! An advanced full-text search engine (Swish-E) ensures quick response: typical query time not exceeding 5 ms. After the query, the relevant results are simply concatenated from the cache. Since data transformation is no longer a bottleneck, it can be performed in high-level languages, saving development time. Perfect (complete) cache of all possible fragments ensures perfect response to all possible queries. The trade-off is scalability versus perfect flexibility. Only drawback to flexibility in this solution: A complete rebuild of the cache takes about two days on our machine.

Integration: 

Integration Pre-generated data (1) Here are some examples of pre-generated data. This is the primitive format we've seen above. It is used for storage and transformation.

Integration: 

Integration Pre-generated data (2) Here are some examples of pre-generated data. This is the original exchange format defined for infoconnex. It is used in a proprietary XML-over-TCP server.

Integration: 

Integration Pre-generated data (3) Here are some examples of pre-generated data. This is an intermediary format for vascoda. It is used in a SOAP style Web Service.

Integration: 

Integration Flexibility This level of abstraction results in extraordinary flexibility. Quick turnaround time for extension requests Exceptionally good performance, independent of Number of supported interfaces Complexity of selected interface Size or complexity of underlying database Easy scalability in the spirit of LAMP solutions Easy integration into existing and future Portals or Integrated Library Solutions.

Slide35: 

Thank you for your attention Contact: Marc André Selig Erich Weichselgartner Institute for Psychology Information (ZPID), Trier, Germany