Edit comment LC-2126 for Protocol for Web Description Resources (POWDER) Working Group

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Comment LC-2126

Comment Shortname:

Commenter: Chaals <chaals@opera.com>

Message-id:

Section of the document concerned:

[Free text description]Document as a wholeProtocol for Web Description Resources (POWDER): Formal Se... Abstract Status of this document This document and the Description Resources [DR] document bo... Table of Contents 1 Introduction The GRDDL transform from POWDER to POWDER-BASE to POWDER-S i... 1.1 Namespaces, Terminology and Conventions Used in This Document. Table 1: Prefixes and Namespaces used in this document Pre... 2 Attribution Element Semantics 2.1 POWDER Attribution Semantics 2.2 POWDER-S Attribution Semantics As a shortcut designed to avoid the automatic need to declar... Example 2-1: The Generic Semantics of the attribution Eleme... As noted above, some elements within the POWDER namespace th... issuedby SHOULD Example 2-2: The Semantics of the POWDER-Specific Child Ele... 3 Description Resource Semantics Example 3-1: A Generic Example of A Descriptor Set and Tag... The ex:finish element specifies that the ex:finish relation... Example 3-2 The POWDER-S Encoding of Example 3-1 [RDF/XML]... Example 3-3: A DR with Multiple IRI Sets in its Scope [XML]... Example 3-4: The POWDER-S encoding of Example 3-3 [RDF/XML]... Examples 3-3 and 3-4 also show that if a descriptorset eleme... 3.1 Multiple Description Resources in a Single POWDER Document Example 3-5: A POWDER Document Containing Multiple DRs [XML... Example 3-6: The POWDER-S Encoding of Example 3-5 [RDF/XML]... Example 3-7: An Ordered List of DRs [XML] 1 <ol> 2... Example 3-8: The POWDER-S Encoding of Example 3-7 [RDF/XML]... 3.2 Descriptor Set Semantics 3.2.1 Descriptor Sets expressed as RDF Properties and Values In the simplest case, a descriptor set contains RDF properti... Example 3-9: A Descriptor Set Containing an RDF Property wi... These simple cases will normally be what is required for Des... Example 3-10: A Descriptor Set Containing a Blank Node POWD... Example 3-11: A Descriptor Set Containing an Identified Nod... 3.2.2 Asserting the rdf:type Relationship Example 3-12: A Descriptor Set Asserting that IRIs within i... If used directly, the rdf:type property will be treated in t... 3.2.3 Referring to External Descriptor Sets Example 3-13: A Descriptor Set Referring to one in an Exter... 3.2.4 Further Descriptors 3.3 Tag Set Semantics The semantics of the (free text) tags are similar to those f... Example 3-14: A Tag Set. POWDER [XML] 1 <tagset> 2... 4 IRI Set Semantics 4.1 White Space and List Pre-Processing 4.2 POWDER and POWDER-BASE IRI Set Semantics Example 4-1: The POWDER and POWDER-BASE Encoding of an Exam... Table 3. Template regular expressions for IRI constraints t... Example 4-2: The POWDER and POWDER-BASE Encoding of an Exam... Example 4-3: The POWDER and POWDER-BASE Encoding of an Exam... 4.3 POWDER-S IRI Set Semantics wdrs:matchesregex rdf:type owl:DatatypeProperty . wdrs:... The following example takes a complete example POWDER docume... Example 4-4: The Full Transformation of an Example from POW... Example 4-5: The POWDER, POWDER-BASE and POWDER-S Encoding... 4.4 Direct Descriptions In POWDER-S, such descriptions are translated into classes,... Example 4-6: The Semantics of Direct Description Elements P... 4.5 Semantics of abouthosts and aboutregex This process is demonstrated by Example 4.7. Notice that in... Example 4-7: The Semantics of abouthosts POWDER Document [X... As discussed in Section 3.2.3, a DR MAY refer to descriptors... 4.6 POWDER-BASE IRI Set Semantics in OWL 2 (Informative) hasIRI rdf:type owl:DatatypeProperty . hasIRI rdf:type owl:... Example 4-8: The POWDER-S Encoding of Example 4-4 With User... 5 Acknowledgements 6 References [WEBARCH] [GRDDL] [XSLT] [DR] [GROUP] [USECASES] [PRIMER] [TESTS] [WDR] [WDRS] [WDRD] [PDR-GRDDL] [XSD2] [N3] [DC] [FOAF [W3C DTF] [OWL] [OWL2] [RDF-SEMANTICS] [XQXP] [XSLT2] [Rabin] [RFC2119] 7 Change Log 7.1 Changes since First Public Working Draft
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Refinement of the section concerned:

Status:

open proposal pending resolved_yes resolved_no resolved_partial other assigned to Nobody

Type: substantive editorial typo question general comment undefined

Resolution status:

Response drafted Resolution implemented Reply sent to commenter

Response status:

No response from Commenter yet Commenter approved disposition Commenter objected to disposition
Commenter's response (URI):

Comment:

1. We not think that POWDER is implementable if the "arbitrary RDF in
POWDER" features, those marked at risk in the Formal Semantics Document,
remain in the specification.

They are a serious barrier to making it worthwhile continuing our work, as
they require a RDF parser in any POWDER-capable tool, rather than allowing
simple POWDER authoring tools and making it feasible to have POWDER
implementations running on devices of all kinds. Given that an important
use case is for gaming machines, and other entertainment devices with
internet access, and that these devices generally have much lower
processing power than desktop computers (where it is feasible to run RDF
processors), this would make POWDER somewhat pointless.

Removing the generalityof the format and maintaining it as a simple,
well-defined XML format will make a significant difference to its
implementability, and relevance to the Web.

Related issues: (space separated ids)

WG Notes: WG resolved to drop arbitrary RDF from both attribution and descriptorset elements.

Resolution:

(Please make sure the resolution is adapted for public consumption)