When it comes to developing a method for the definition of guarantees of existence, several questions need to be answered. First of all, it has to be decided who is able to set guarantees of existence.
The following three options seem reasonable:
- The guarantee of existence is set by the author during the online publishing process.
- Each piece of information of an e-portfolio is automatically provided with a pre-defined guarantee of existence. Either a period of time (eg. six month s after publication) or a fixed date (eg. Until 1.7.2008) can be pre-defined.
- A person who is interested in the information determines how long the information should be available. He/she can either set a new guarantee of existence or extend the guarantee set by the author (or another reader). However, an author should not be deprived of the authority over his/her content. An author should still be able to refuse to set or extend a guarantee of existence.
You can find a printable version here:
 GOE for online information as a precondition for hyperlinked e-portfolios (PDF, 361 kB)
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