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- purpose: Caching remote data for local use
- current Current plan is to use Linked Data Fragments (LDF)
- and, within LDF, potentially triple pattern fragments: http://linkeddatafragments.org/in-depth/#tpf
- lightweight querying, not the whole SPARQL interface.
- Work is begun in ActiveTriples: https://github.com/ActiveTriples/linked-data-fragments/
you send it a subject and it gives you back everything about that subject. caching happens in the back. implementation does this with switchable back ends, currently best with marmotta.
- "A Hydra Ontology endpoint that caches resources from remote dataset and returns: { <subject> ?predicate ?object . }" (2015-05-28)
Area: Indexing / Solr
- If an entry changes, it will need to be re-indexed in every solr document containing that entry. Implications!
- Atomic updates must be used in solr
- Therefore, we must use atomic updates.
- Therefore, all fields in solr must be stored
- Therefore, we need a way to exclude full-text fields from document retrieval or everything will take one million years.
- This does not currently exist in solr but the group is in contact with a solr developer who is willing to help.
- https://issues.apache.org/jira/browse/SOLR-3191
- Note some discussion of how to use this once it's ready on 2015-12-10
- Note this is not a concern if you don't have any full-text data
- Related: 'side-car indexer' described as 'Option 3' on 2015-04-29.
Area: Making assertions about external triples
- Members of this group are very early in explorations of this work.
- E.g. Want to make a local correction or add additional info / context to a triple owned externally
- Implies that we need the external resource to be versioned, which necessitates caching.
- Also want to record author of the assertion?
- Can be done with either named graphs or reification.
- Also discussed on 2015-08-06 as 'meta-authority records'
Area: Generally sharing projects and helping one another
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- Working around usage Limits from LC (2015-01-07)
- How to link the same concept in two vocabularies (2015-01-07)
- Metadata enrichment initiative: https://github.com/boston-library/mei (2015-12-10, 2015-11-12, 2015-07-23)
- Minting Linked Data URIs / Hosting Linked Data Vocabulary: https://github.com/OregonDigital/ControlledVocabularyManager (2015-11-12)
Personal notes from 2016.01.07 meeting
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* creation of custom vocabularies.
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controlled vocabulary manager - a repo - look at notes from last two meetings - powers opaquenamespace. (https://github.com/OregonDigital/ControlledVocabularyManager)
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