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Review of ontology draft

From: Felix Sasaki <felix.sasaki@fh-potsdam.de>
Date: Wed, 20 May 2009 17:21:34 +0200
Message-ID: <ba4134970905200821k7fb02e1aya9f17b68cfbd3339@mail.gmail.com>
To: "public-media-annotation@w3.org" <public-media-annotation@w3.org>
Hi all,

this is my review of the ontology draft. Mostly very small editoral
comments, but one non-editoral comment at the end.

"This document defines ontology that consists of a core vocabulary, which is
a common set of properties to describe the basic metadata needed for media
entities, and the semantic links between their values in different existing
vocabularies. This ontology helps the programs to support the
interoperability among the various kinds of metadata formats related to
media entities on the Web."
change "defines ontology" to "defines an ontology"

In the status section you need to add
"The Working Group expects to advance this specification to
Recommendation<http://www.w3.org/2004/02/Process-20040205/tr.html#RecsW3C>Status."
after "which is part of the W3C Video on the Web
Activity<http://www.w3.org/2008/WebVideo/>
.".

This link
http://www.w3.org/2004/01/pp-impl/42357/status
should be
http://www.w3.org/2004/01/pp-impl/42786/status

At "This document defines the "Ontology for Media Object 1.0"." and
potentially at other places: Be careful to replace "Object" with "Entity".

"The semantic links of the ontology defines the interrelations between the
properties in different formats. For example the
property<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#property>
* dc:creator * from Dublin
Core<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#dc>can
be mapped to the
property<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#property>
* artist * defined in
EXIF<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#exif>
."
Change this to
"The semantic links of the ontology define the interrelations between the
properties in different formats. For example the
property<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#property>
* dc:creator * from Dublin
Core<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#dc>can
be mapped to the
property<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#property>
* artist * defined in
EXIF<http://dev.w3.org/2008/video/mediaann/mediaont-1.0/mediaont-1.0.html#exif>
."

Do we still need this note?
"This list needs to be brought in sync with the mapping table."

General: there are some broken links you need to repair, see
http://tinyurl.com/r4gh9f

change "in FRBR(" to "in FRBR ("

change "representationwith" to "representation with"

change "propertiesof" to "properties of"

I would change "The following table lists identifiers which are used to
identify formats in this specification." to "The following table lists
identifiers which are used as prefixes to identify formats in this
specification."

Non-editorial comment: You are defining value types and syntactic mapping,
but the mapping table does not contain information about these (except
cablelabs1.0). I think it would be useful to have a column in the mapping
table about syntactic information, providing information like at
http://www.w3.org/TR/xmlschema-2/#dateTime-lexical-representation
or like "what character encoding is possible to use?" or "string length"
(see cablelaps 1.0 for examples). All low level information, but useful to
capture IMO.
So proposal not for now but for after the publication: Add a row like that.
If we do that we can refer from the property value types definition section
to it.
For now, I would add a note after
"Syntactic level mappings declare the correspondence between two
semantically equivalent properties but with a different syntactic
expression. It's most evident case is the date formatting, but some others
may appear."
Like
"Currently the mapping table for most of the formats does not contain
information about syntactic mapping".

That's all! At the end I just can repeat what I said before: This is great
progress, and I am looking forward for more.

Best,

Felix
Received on Wednesday, 20 May 2009 15:22:22 GMT

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