Glossary · Selectors

iiRDS FragmentSelector

Also known as: fragment selector

In iiRDS (intelligent information Request and Delivery Standard), a FragmentSelector selects a part of a file by a single identifier. The identifier is given in rdf:value and is interpreted according to the specification named in dcterms:conformsTo — for example a page number in a PDF.

iiRDS term
Ontology
Information architecture

In one sentence

An iiRDS FragmentSelector points to one location in a file by a single identifier, such as page=12 in a PDF rendition.

Example

rdf:value “page=12” together with dcterms:conformsTo RFC 3778 (the PDF media type) selects page 12 of a PDF rendition.

How it applies

Safety: A fragment selector can point to exactly the page or element that holds a warning, so a portal or machine display can open it directly.
AI and retrieval: Precise identifiers let an assistant deep-link its answer to the exact location it came from — a verifiable citation instead of a vague reference to a manual.
Semantic web: The combination of rdf:value and dcterms:conformsTo follows the same pattern as selectors in the W3C Web Annotation Data Model, which makes the data familiar to RDF tooling.

FragmentSelector vs. RangeSelector

A FragmentSelector marks one location. A RangeSelector marks a section between two locations — and uses two fragment selectors to do so, one for the start and one for the end.

In RDF

Shown in Turtle for readability — inside a package, metadata.rdf is written in RDF/XML.

@prefix iirds: <http://iirds.tekom.de/iirds#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms: <http://purl.org/dc/terms/> .

[] a iirds:FragmentSelector ;
    dcterms:conformsTo <http://tools.ietf.org/rfc/rfc3778> ;
    rdf:value "page=12" .