The conclusion from the other thread, with Eric, is clearly the Software
license. Should we go edit the the ontologies to say this?
-- Sandro
On 03/18/2016 11:29 AM, Stian Soiland-Reyes wrote:
Hi, in Apache Taverna we try to use PROV, and part of that is to embed
https://www.w3.org/ns/prov-o.ttl
in our source code to avoid external dependencies.
As we discuss in
https://issues.apache.org/jira/browse/TAVERNA-927
.. now we are not sure if we can do this, as it is unclear what is the
license of the PROV ontologies and schemas.
They do not have any <!-- style --> headers, and there is no
dcterms:license annotatoin.
However
https://www.w3.org/ns/prov/
and
https://www.w3.org/TR/prov-o/
says:
Copyright © 2011-2013 W3C® (MIT, ERCIM, Keio, Beihang), All Rights Reserved.
W3C liability, trademark and document use rules apply.
The Document Use Rules
https://www.w3.org/Consortium/Legal/2015/doc-license
are controversial for Apache source code as it forbids modifications:
No right to create modifications or derivatives of W3C documents is granted
pursuant to this license, except as follows: To facilitate implementation of
the technical specifications set forth in this document, anyone may prepare and
distribute derivative works and portions of this document in software, in
supporting materials accompanying software, and in documentation of software,
PROVIDED that all such works include the notice below. HOWEVER, the publication
of derivative works of this document for use as a technical specification is
expressly prohibited.
..and hence we can't include them in source code
repositories/releases, as it would be incompatible with the Apache
License.
(including in binaries are OK, but then we have to fetch them during
build - which risks hitting the infamous w3.org schema 'tar pit')
However the Document Use rules also says:
In addition, "Code Components" —Web IDL in sections clearly marked as Web IDL;
and W3C-defined markup (HTML, CSS, etc.) and computer programming language code clearly
marked as code examples— are licensed under the W3C Software License.
( The W3C Software License is permissive and would be OK to include in
source code.
https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document )
This list does not include schemas, ontologies or JSON-LD contextx -
so it is unclear if these count as "Code Components" or as
"Documents". Do we then have to assume that if they don't have a
header or license annotation, then they are under the Documentation
License?
BTW - here's an example of a schema with the software licence header,
which means we can include it in source code:
https://www.w3.org/TR/xmldsig-core/xmldsig-core-schema.xsd
(once you get it out of the w3.org tar pit)
<!-- Schema for XML Signatures
http://www.w3.org/2000/09/xmldsig#
$Revision: 1.1 $ on $Date: 2002/02/08 20:32:26 $ by $Author: reagle $
Copyright 2001 The Internet Society and W3C (Massachusetts Institute
of Technology, Institut National de Recherche en Informatique et en
Automatique, Keio University). All Rights Reserved.
http://www.w3.org/Consortium/Legal/
This document is governed by the W3C Software License [1] as described
in the FAQ [2].
[1] http://www.w3.org/Consortium/Legal/copyright-software-19980720
[2] http://www.w3.org/Consortium/Legal/IPR-FAQ-20000620.html#DTD
-->
Would it be possible for other schemas and ontologies, particularly
under /ns/ to get a similar clarifying license header? Or at least
this to be a requirement for any future specifications?
Another question is what counts as a "modification" - is this any
derived work? E.g. changing a Turtle file to JSON-LD? Or generating
Java class files with JAXB from an XSD?
We're considering a legal workaround by packaging various w3c schemas
as Maven artifacts, from Github distributed to Maven Central as JAR
"binaries" - but it is even unclear if this would count as a
"modification".
(We have a similar issue with OASIS schemas)
