iiif: discovery of resources
TRANSCRIPT
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Discovery of IIIF Resources
InternationalImageInteroperabilityFramework
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Discovery?
Two main aspects:1. How can a user find IIIF resources?2. How can she then get those resources into an
environment where she can use them?
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Scenarios
Scenario: An end user has an information need that can be fulfilled by IIIF resources
Scenario: An institution has content in IIIF compatible formats and wishes for it to be found and used
Scenario: A developer wants to know how to build software that enables the above scenarios
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Success?
Scenario: An end user has an information needSuccess: The user finds the resources she needs
Scenario: An institution has content in IIIF compatible formats Success: The user can find the institution’s resources
Scenario: A developer wants to know how to build software Success: There is a clear specification for what to build
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Scope?
IIIF Resources:• Content Resources (currently Images)• Description Resources (currently Manifests, Annotations)
Discovery requires Description resources to provide the contextof the Content resourcesThe Image API alone provides no description of the Image content, just technical and rights metadata
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Presentation API
Provide only the informationnecessary for an application topresent the object to the user
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Scope?
IIIF Resources:• Content Resources (currently Images)• Description Resources (currently Manifests, Annotations)
IIIF Search API covers the discovery of Annotations, once a Manifest has been found.It does not cover the discovery of the Manifest.
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Scope: Discovery of Manifests
IIIF Resources:• Content Resources (currently Images)• Description Resources (currently Manifests, Annotations)
Discovery is:
How can we discover Manifests?(and Collections of them)
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Constraints
• Presentation API does not include semantic descriptions• But can reference them with seeAlso
• IIIF has a Resource Centric view of the web• e.g. Google Sitemap, IIIF Collections
• Not a service oriented view• e.g. OAI-‐PMH, SPARQL
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Approach Discussed
Three Components:1. Central Registry of links2. Crawling Software that crawl those links for resources3. User oriented Search Engines over those resources
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Approach Discussed
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Approach Discussed
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Approach Discussed
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Central Registry
Registry of…• Top level Collections• All Collections?• All Manifests?
With APIs for:• Browse/Search• Submission
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Central Registry: Collection or Sitemap?
Collections:• Is already specified in IIIF, some viewers already support them, can build hierarchies• Need to distinguish audience: crawler vs human
Sitemaps:• Implemented by Google and web community• But unknown what Google would do with Manifests?
• ResourceSync extensions for metadata
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Central Registry: APIs?
Browse:• Can’t use Sitemaps as only for the domain• Collections?
Search:• Likely to be out of date, other than submission date?• Could accomplish by browse being ordered?
Submission:• Github PR? Simple web form? What details needed?
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Crawlers
Crawlers start from the Registry, and follow links to collect data.Purpose: Populate search engine(s) with data
Needs:• Implementations• Community agreement on polite crawling• Notification of changes will help
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Search Engines
Requirements:• Index the crawled data• Provide human access to indexes• (Not machine access)
• Allow discovered content to be transferred to user’s preferred environment for use
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Search Engines: What Data?
Presentation API strings• Intended for humans, not machines• Slightly better than indexing HTML• = No fielded search (can’t search by author, date,…)
Referenced semantic descriptions• Many, many different standards in the community• Might not be available
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Search Engines: Transfer
Need to be able to get IIIF Resources from the search engine’s UI to IIIF client UI.Search engine could:• Invoke a pre-‐configured client per result• Invoke a pre-‐configured client per set of results• Present results as a draggable Collection• Present hits as draggable Manifests
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Next Steps?
• Decide on initial format to use, and implement if needed• Decide on APIs for registry submission, browse, search?• Decide on scope/size of registry• Implement simple registry and encourage submission • Implement crawlers starting from the registry• Implement simple search engine over crawled data• Iterate based on experience!
@azaroth42
IIIF: Interope
rabilituy
IIIF: Disc
overy
Next Steps?
• Somehow bootstrap from Aggregators like Europeana?• Don’t want to be tied to region specific Cultural Heritage?
• IIIF-‐C / iiif.io could/should host the registry?• Working Groups to produce short lists of standards to reference via seeAlso, with recommended profiles?
• Other??
