[OAI-implementers] Beginner questions
Tue, 08 Apr 2003 23:56:35 +0200
i am not sure about your first question - are you looking for usage
statistics for oai-harvested data ? if so, every now and then service
providers publish whatever they do know on this list or oai-general
(sometimes as pointers to publications). there is no global tracking for
usage of harvested data.
the trivial answer is that for most service providers, 100% of accesses
is to oai-harvested "metadata" since they get their data strictly from
data providers. i dont know if anybody tracks "resource" usage however.
for the second question, there are two ways to harvest: either by using
listrecords or by using listidentifiers and getrecords (there are
probably numerous articles/papers that discuss these). it can be argued
that the former is all we need, but listidentifiers has been used by
some harvesters for periodic consistency checks - to confirm existence
of records without retrieving them.
... if you provide more information on your requests, you will probably
get more directed responses ...
Venugopal R Pally wrote:
> Thanks. This has made my questions cleared. could you
> please inform me how 'METADATA' and 'RESOURCE' are
> being used by harvestors or by any user ? Since we are
> getting records by ListRecords, GetRecord, how
> ListIdentifiers is used ?
> --- Naomi Dushay <Naomi@cs.cornell.edu> wrote:
>>One of the ways we think about the two different
>>identifiers is this:
>>The DC identifier is an identifier for the RESOURCE.
>> In fact, our rule
>>of thumb is that any information within the metadata
>>tag is about the
>>The OAI identifier is an identifier for METADATA for
>>the resource. And
>>again, information in the header tag is about
>>METADATA for the RESOURCE.
>>We tend to think of the about tag as being about the
>>METADATA as well.
>>- Naomi Dushay
>>National Science Digital Library
>>OAI-implementers mailing list
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