Metadata
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John Hargreaves introduces the topic of metadata
![Before we begin ,[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Metadata
- 1. METADATA John Hargreaves Technical Support officer JISC Digital Media
- 20. Vocabularies Image courtesy of stock.xchng
Notas del editor
- What about “standards”? Best practice says “use standards”, but it’s not always clear what a standard is Is it something: Approved by a standards body? – few of the commonly used metadata schemas and vocabularies have gone right the way through this process. Dublin Core was only finally approved as an ISO standard earlier this year (2003) – de jure standards Community endorsement? Widespread practice? – de facto standards We will try to avoid using “standards”, if we slip into it, understand that we mean “standards” in a broad sense, with quotation marks around the term
- What about “standards”? Best practice says “use standards”, but it’s not always clear what a standard is Is it something: Approved by a standards body? – few of the commonly used metadata schemas and vocabularies have gone right the way through this process. Dublin Core was only finally approved as an ISO standard earlier this year (2003) – de jure standards Community endorsement? Widespread practice? – de facto standards We will try to avoid using “standards”, if we slip into it, understand that we mean “standards” in a broad sense, with quotation marks around the term
- For some projects the choice is clear
- Metadata is derived from 2 sources…
- New European schema
- New European schema
- North American, has influenced a number of other schema
- Ask the audience to suggest reasons for controlling vocabs?
- Ask the audience to suggest ways to control vocabs
- Finally moving away from controlled vocabularies to uncontrolled “keywords” – words supplied by cataloguer or even the user It’s NOT an either/or situation - Metadata frameworks can accommodate both Opinion is divided on whether formal controlled vocab or keywords are better. The research suggests that controlled vocabularies are better than uncontrolled keywords, but a mix of both is even better
- Ask the audience to suggest ways to control vocabs
- Image file header information - BMP, PCX, JPEG, FLI/FLC, and AVI files include headers that define the image size, number of colors, and other information needed to display the image. GPS - time and location could be used for a lot of things DRM data Audio annotation - though has obvious implications for file size and hasn’t been widely accepted is a option it may useful in some circumstances DOI Are unique numbers assigned to each unique published object These numbers are stored in a server that knows where on the net to find the specific document. very useful for DRM Histories – particularly medical/legal images User generate metadata Cookies can help personalise the online experience recall specific information on subsequent visits simplifying the process of recording information- provide a convenience feature to save you time Most Web browsers automatically accept cookies Log and track usage of the system - data could be used to analyse amount and reasons for failed searches - indicating that your chosen schema or vocabulary is ineffective Also be used to enable customisation & notification - MORE HERE User contributed - talk about in more detail > next slide
- Closure and evaluation checklist: review the topics covered on the timetable. At the end of your presentation you might ask, “How will that work in your institution?” share what they feel has been the most valuable thing they have learnt, what they will do with their new learning in the coming week what they want to understand better