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TEL Milestone Conference 29 30 April 2002

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TEL Milestone Conference 29 30 April 2002

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    1. TEL Milestone Conference 29 – 30 April 2002 1

    2. TEL Milestone Conference 29 – 30 April 2002 2 Subject searching Project summary and partners Principles Search interface Link Management Future developments Summary

    3. TEL Milestone Conference 29 – 30 April 2002 3

    4. TEL Milestone Conference 29 – 30 April 2002 4

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    7. TEL Milestone Conference 29 – 30 April 2002 7 Our conclusions: A multilingual subject heading system is a necessity We need an international co-ordinated approach We have to build it on existing systems As the costs involved are huge, we have to concentrate on the same solution

    8. TEL Milestone Conference 29 – 30 April 2002 8 Partners

    9. TEL Milestone Conference 29 – 30 April 2002 9 Aims and milestones

    10. TEL Milestone Conference 29 – 30 April 2002 10

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    19. TEL Milestone Conference 29 – 30 April 2002 19 Even with an effective model of co-operation, MACS can only manage and not create links. The subject specialists must establish the equivalences, and their intellectual work must be introduced into the system. In order to build a multilingual system with a significant number of links, the prototype content must be multiplied by 20 or even by 50. It is therefore necessary to provide technical solutions without a loss of quality and without changing the principles. These solutions should allow the partners to reach their goal in a fast and economic way, thanks to the re-use of work already carried out and to the automation of certain tasks. The subject heading mapping method was developed in detail in the feasibility study: in a selected subject field, three monolingual lists of subject headings were drawn up and compared. The links were analysed, first on the terminological level (subject heading), then on the semantic level (authority record), and finally on the syntactic one (application). This reliable, but very time-consuming, work has shown that the existing equivalences between RAMEAU and LCSH, which had been systematically established by the BnF in its own authority records, were of great interest. Their accuracy was such that they could be used as a basis for scaling-up MACS. So, the partners decided to use this work. The appropriate fields from the RAMEAU records (which are clearly identified in UNIMARC format) will be loaded into the system in order to feed it automatically with a substantial set of RAMEAU/LCSH links. New specifications will be developed to make the downloading possible as well as the automation of updates from local systems of subject headings already existing in MACS.Even with an effective model of co-operation, MACS can only manage and not create links. The subject specialists must establish the equivalences, and their intellectual work must be introduced into the system. In order to build a multilingual system with a significant number of links, the prototype content must be multiplied by 20 or even by 50. It is therefore necessary to provide technical solutions without a loss of quality and without changing the principles. These solutions should allow the partners to reach their goal in a fast and economic way, thanks to the re-use of work already carried out and to the automation of certain tasks. The subject heading mapping method was developed in detail in the feasibility study: in a selected subject field, three monolingual lists of subject headings were drawn up and compared. The links were analysed, first on the terminological level (subject heading), then on the semantic level (authority record), and finally on the syntactic one (application). This reliable, but very time-consuming, work has shown that the existing equivalences between RAMEAU and LCSH, which had been systematically established by the BnF in its own authority records, were of great interest. Their accuracy was such that they could be used as a basis for scaling-up MACS. So, the partners decided to use this work. The appropriate fields from the RAMEAU records (which are clearly identified in UNIMARC format) will be loaded into the system in order to feed it automatically with a substantial set of RAMEAU/LCSH links. New specifications will be developed to make the downloading possible as well as the automation of updates from local systems of subject headings already existing in MACS.

    20. TEL Milestone Conference 29 – 30 April 2002 20

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