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<h1>- DRAFT -</h1>
<h1>mawg</h1>
<h2>16 Apr 2009</h2>
<p><a href=
'http://www.w3.org/2008/WebVideo/Annotations/wiki/Meeting_Agenda_(In_Progress)'>
Agenda</a></p>
<p>See also: <a href=
"http://www.w3.org/2009/04/16-mediaann-irc">IRC log</a></p>
<h2><a name="attendees" id="attendees">Attendees</a></h2>
<div class="intro">
<dl>
<dt>Present</dt>
<dd>Doug_Schepers, Felix</dd>
<dt>Regrets</dt>
<dt>Chair</dt>
<dd>daniel</dd>
<dt>Scribe</dt>
<dd>tbd, wbailer</dd>
</dl>
</div>
<h2>Contents</h2>
<ul>
<li>
<a href="#agenda">Topics</a>
<ol>
<li><a href="#item01">mxm introduction</a></li>
<li><a href="#item02">review of mapping table</a></li>
</ol>
</li>
<li><a href="#ActionSummary">Summary of Action Items</a></li>
</ul>
<hr />
<div class="meeting">
<p class='phone'>&nbsp;</p>
<p class='phone'>&nbsp;</p>
<p class='irc'>&lt;<cite>fsasaki</cite>&gt; scribe: tbd</p>
<p class='irc'>&lt;<cite>shepazu</cite>&gt; trackbot, start
telcon</p>
<p class='irc'>&lt;<cite>trackbot</cite>&gt; Meeting: Media
Annotations Working Group Teleconference</p>
<p class='irc'>&lt;<cite>trackbot</cite>&gt; Date: 16 April
2009</p>
<p class='irc'>&lt;<cite>vrodrgue2</cite>&gt; I am vroddon2 in
skype</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; felix, can you hear
our voices ?</p>
<p class='irc'>&lt;<cite>fsasaki</cite>&gt; very hard to
hear</p>
<p class='irc'>&lt;<cite>shepazu</cite>&gt; XMP also has broad
support on deployed devices</p>
<p class='irc'>&lt;<cite>shepazu</cite>&gt; like cameras,
videocams, etc.</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; canonical processes
discussion proposed by Venonique</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; dave is talking
about some issues and questions on UC&amp;Req document.</p>
<p class='irc'>&lt;<cite>wbailer</cite>&gt; scribe: wbailer</p>
<p class='phone'><cite>dave:</cite> cross site scripting is an
security issue for metadata access<br />
... mention that this is an issue, work on solution with other
WGs<br />
... issue: are annotations timed or not?<br />
... applys to different type of metadata: content description,
rights, etc.<br />
... metadata global to media item might be sufficient to start,
but time-dependent metadata needs to be considered</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; yeah, felix, the
whether is very nice</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; ..:-)</p>
<p class='phone'><cite>joakim:</cite> what is the media object?
is a fragment a media object<br />
... needs to be defined</p>
<p class='phone'><cite>felix:</cite> this is an issue, do we
need to solve it? could timed text approach be used for
that</p>
<p class='phone'><cite>dave:</cite> time reference should be
supported in api</p>
<p class='phone'><cite>joakim:</cite> doesn't media fragments
solve that? uri describes fragment<br />
... bring up question in joined section</p>
<p class='irc'>&lt;<cite>fsasaki</cite>&gt; felix: media
fragments group mechanism might be helpful here</p>
<p class='phone'><cite>dave:</cite> use case "Access via web
client to metadata in heterogeneous formats"<br />
... to which collection do the queries refer to?</p>
<p class='irc'>&lt;<cite>vmalais</cite>&gt; <a href=
"http://dev.w3.org/cvsweb/~checkout~/2008/video/mediaann/mediaont-req/mediaont-req.html?rev=1.57&amp;content-type=text/html;%20charset=utf-8">
http://dev.w3.org/cvsweb/~checkout~/2008/video/mediaann/mediaont-req/mediaont-req.html?rev=1.57&amp;content-type=text/html;%20charset=utf-8</a></p>
<p class='phone'><cite>dave:</cite> specify what goes along the
arrows in the diagram in section3</p><a name="action01" id=
"action01"></a>
<p class='irc'>&lt;<cite>scribe</cite>&gt;
<strong>ACTION:</strong> felix to clarify arrow + descriptions
for the diagram in section 3 of UC &amp; req dcouments
[recorded in <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html#action01">http://www.w3.org/2009/04/16-mediaann-minutes.html#action01</a>]</p>
<p class='irc'>&lt;<cite>trackbot</cite>&gt; Created ACTION-101
- Clarify arrow + descriptions for the diagram in section 3 of
UC &amp; req dcouments [on Felix Sasaki - due 2009-04-23].</p>
<p class='phone'><cite>florian:</cite> uc 5.4 refers accessing
the api from a search engine</p>
<p class='phone'><cite>joakim:</cite> check if attributes
mentioned in attributes are covered by properties in mapping
table</p><a name="action02" id="action02"></a>
<p class='irc'>&lt;<cite>scribe</cite>&gt;
<strong>ACTION:</strong> veroniqueM to update canonical
processes use cases [recorded in <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html#action02">http://www.w3.org/2009/04/16-mediaann-minutes.html#action02</a>]</p>
<p class='irc'>&lt;<cite>trackbot</cite>&gt; Sorry, couldn't
find user - veroniqueM</p><a name="action03" id="action03"></a>
<p class='irc'>&lt;<cite>scribe</cite>&gt;
<strong>ACTION:</strong> vmalais to update canonical processes
use cases [recorded in <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html#action03">http://www.w3.org/2009/04/16-mediaann-minutes.html#action03</a>]</p>
<p class='irc'>&lt;<cite>trackbot</cite>&gt; Created ACTION-102
- Update canonical processes use cases [on Véronique Malaisé -
due 2009-04-23].</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; coffee break</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; and get back to the
MXM discussion...</p>
<h3 id="item01">mxm introduction</h3>
<p class='phone'>wonsuk presents short overview of mpeg
extensible middleware</p>
<p class='phone'><a href=
"http://mxm.wg11.sc29.org/">http://mxm.wg11.sc29.org/</a></p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; resume the meeting
with MXM introduction by Wonsuk</p>
<p class='phone'>wonsuk believes there is synergy between
implementation of generic metadata engine in mxm and mawg</p>
<p class='phone'><cite>joakim:</cite> define basic set of
entities and their mappings to different formats<br />
... in future, further formats could be added<br />
... define basic set of entities</p>
<p class='phone'><cite>veronique:</cite> from which formats to
take definition of these entities</p>
<p class='phone'><cite>joakim:</cite> entities are internal to
ontology<br />
... few, generic entities should be sufficient</p>
<p class='phone'><cite>jean-pierre:</cite> people will map to
other formats - what to map to?</p>
<p class='phone'><cite>florian:</cite> a defined reference is
necessary<br />
... group and classify properties</p>
<p class='phone'><cite>jean-pierre:</cite> how are entities
from different formats related<br />
... define metamodel?</p>
<p class='phone'><cite>ruben:</cite> define minimum set of core
terms</p>
<p class='phone'><cite>jean-pierre:</cite> went through this
discussion =&gt; ebu core<br />
... europeana: reduce to 15 elements, then enriched</p>
<p class='phone'><cite>veronique:</cite> start with core set,
xmp also has core set going back to DC + enrichments</p>
<p class='phone'><cite>ruben:</cite> ID3 is good example for
basic metadata set</p>
<p class='phone'><cite>joakim:</cite> publish set of general
entities, make people think in terms of these entities</p>
<p class='phone'><cite>dave:</cite> we'd all like a metadata
system with clear semantics, widely used<br />
... don't know how to get it</p>
<p class='phone'><cite>veronique:</cite> enforcing a format is
not possible, mapping is the only option</p>
<p class='phone'><cite>florian:</cite> mapping always means
loss of information</p>
<p class='phone'><cite>victor:</cite> mapping using semantic
technologies can provide richer mapping than other
apporaches<br />
... if set of entities is published in w3c recommendation
people might be encouraged to use it</p>
<p class='phone'><cite>florian:</cite> problem is different
semantics in enrichment of standards<br />
... build simple core ontology, can be extended to build
complex annotation</p>
<p class='phone'><cite>jean-pierre:</cite> kind of combination
of dc and mpeg-7 reflects interest of people in wg, but not of
interest</p>
<p class='irc'>&lt;<cite>fsasaki</cite>&gt; +1 to a simple set
of properties</p>
<p class='phone'><cite>jean-pierre:</cite> unthinkable
combination<br />
... we have even not agreed on which format to use for
describing mappings<br />
... most search engines make search based on brute force</p>
<p class='phone'><cite>veronique:</cite> there are swoogle type
of search engines</p>
<p class='phone'><cite>jean-pierre:</cite> even if there's an
api for mapping different formats- will it be used</p>
<p class='phone'><cite>joakim:</cite> assemble domain
knowledge, not filter it</p>
<p class='phone'><cite>jean-pierre:</cite> work would be simple
if all formats would be described already in rdf</p>
<p class='phone'><cite>joakim:</cite> thought that 1:1 mapping
of properties makes work easier</p>
<p class='phone'><cite>veronique:</cite> adding entities and
their relations would mean defining another ontology</p>
<p class='phone'><cite>joakim:</cite> grouping properties like
in xmp</p>
<p class='phone'><cite>florian:</cite> define ontology, provide
browsing properties without the need to understand owl</p>
<p class='phone'><cite>veronique:</cite> develop ontology for
grouping, avoid define another metadata format</p>
<p class='phone'><cite>dave:</cite> no reason to prefer certain
format, define properties and mappings to existing
formats<br />
... not really defining a new ontology<br />
... not saying that tags we are mapping to are equivalent</p>
<p class='phone'><cite>veronique:</cite> do people agree to
define basic set of terms?</p>
<p class='phone'><cite>jean-pierre:</cite> set of basic terms
or superset?</p>
<p class='phone'><cite>dave:</cite> subset of what you
reasonable want and expect to get</p>
<p class='irc'>&lt;<cite>fsasaki</cite>&gt; +1 to dave</p>
<p class='phone'><cite>joakim:</cite> isn't that just dublinc
core?</p>
<p class='phone'><cite>veronqiue:</cite> is this really all we
want?</p>
<p class='phone'><cite>florian:</cite> in an image, one wants
to annotate content</p>
<p class='phone'><cite>ruben:</cite> doing better and more
precise might be understand as just another ontology</p>
<p class='phone'><cite>felix:</cite> what we're doing is
developing dc for media<br />
... not bad to refer to dc<br />
... mappings to other formats not availble yet<br />
... lots of mappings available for dc elements in mapping
table, getting thinner for other elements<br />
... concern that group is doing too much and progressing too
slow<br />
... doing something simple for v1 and more complex for v2 might
be a useful approach</p>
<p class='phone'><cite>daniel:</cite> make first basic version,
gather feedback and improve based on feedback</p>
<p class='phone'>daniel reminds of wg charter</p>
<p class='phone'><cite>jean-pierre:</cite> in a simple
approach, we define a list of terms (might be some as dc or
xmp)<br />
... let's see if we agree on list of terms<br />
... define list of entities and mapping, including mapping dc
and xmp to that list</p>
<p class='phone'><cite>joakim:</cite> everyone agrees?</p>
<p class='phone'>no disagreement</p>
<p class='phone'><cite>jean-pierre:</cite> subclasses could be
useful</p>
<p class='phone'><cite>florian:</cite> would increase semantic
expressiveness</p>
<h3 id="item02">review of mapping table</h3>
<p class='phone'><cite>joakim:</cite> level of conformance of
implementations to be defined</p>
<p class='phone'><cite>jean-pierre:</cite> implementation
cannot mean change implementations</p>
<p class='phone'><cite>joakim:</cite> have several levels of
conformance?</p>
<p class='irc'>&lt;<cite>daniel</cite>&gt; implementation
volunteering (in this room): Joakim, Wonsuk, Werner</p>
<p class='phone'><cite>jean-pierre:</cite> api for mapping =
conformance</p>
<p class='phone'><cite>joakim:</cite> what about proprietary
formats of service providers</p>
<p class='phone'><cite>jean-pierre:</cite> format should not be
used as data model</p>
<p class='phone'><cite>joakim:</cite> there are specific
formats in business domains<br />
... use this in generic deployment environment</p>
<p class='phone'><cite>jean-pierre:</cite> boundaries between
delivery channels are disappearing<br />
... don't want to reinvent how to describe broadcast
content</p>
<p class='phone'><cite>dave:</cite> if there is a
recommendation of comment set, why would broadcasters not use
it?</p>
<p class='phone'><cite>jean-pierre:</cite> broadcasters would
keep their formats and use mappings</p>
<p class='phone'><cite>dave:</cite> if there's a recommendation
for set of properties, they would try to conform (in their
formats)</p>
<p class='phone'><cite>florian:</cite> common set of entities
is needed for querying across several formats</p>
<p class='phone'><cite>jean-pierre:</cite> content provider
would not implement for mapping</p>
<p class='phone'><cite>veronique:</cite> at least not large
providers</p>
<p class='phone'><cite>jean-pierre:</cite> we should not reject
any particular type of metadata<br />
... for the time being we have a restricted set of formats for
which we have defined mappings<br />
... everyone should be able to map their format<br />
... restrictions may come from the way the api is written</p>
<p class='phone'><cite>veronique:</cite> skos might not be
sufficient for describing the mappings</p>
<p class='phone'><cite>ruben:</cite> if the internal format is
hidden to the user, why standardise the mappings?<br />
... api only is visible</p>
<p class='phone'><cite>jean-pierre:</cite> like dc, this would
mean publishing list of terms</p>
<p class='phone'><cite>florian:</cite> why should mapping rules
be standardised?</p>
<p class='phone'><cite>ruben:</cite> mapping can be useful, but
can be informative</p>
<p class='phone'><cite>jean-pierre:</cite> mapping is mechanism
to discover the set of entities<br />
... but mappings need not be normative<br />
... simple list of properties is not incompatible with more
complex ontology</p>
<p class='phone'><cite>felix:</cite> simple approach is
good<br />
... description of relation to other formats is very
valuable<br />
... continue review of mappings</p>
<p class='phone'><cite>veronique:</cite> would api be
implementation of mappings?</p>
<p class='phone'><cite>jean-pierre:</cite> is there need for an
api?<br />
... if format in which to publish information is defined</p>
<p class='phone'><cite>felix:</cite> api is useful for making
mapping testable</p>
<p class='phone'><cite>joakim:</cite> does that require solving
data type issue of return values?</p>
<p class='phone'>felix, dave: not necessary for making testable
assertions</p>
<p class='irc'>&lt;<cite>wonsuk</cite>&gt; <a href=
"http://www.w3.org/2008/WebVideo/Annotations/">http://www.w3.org/2008/WebVideo/Annotations/</a></p>
<p class='phone'><cite>veronique:</cite> list of terms, when to
define?</p>
<p class='phone'><cite>joakim:</cite> now<br />
... column with names of entities will be added to mapping
table<br />
... then review and agree on format reviews</p>
<p class='phone'><cite>veronique:</cite> are mappings one way
or bidirectional?</p>
<p class='phone'><cite>dave:</cite> one way only</p>
<p class='phone'><cite>victor:</cite> refine mappings, specify
transitivity, conditions under which properties are equivalent,
etc<br />
... precising the relationship further<br />
... cardinalities<br />
... priorities in case of several mappings</p>
<p class='phone'><cite>joakim:</cite> refining further would be
necessary for supporting setting scenario</p>
<p class='phone'><cite>dave:</cite> setting raises problem of
value ranges of different formats</p>
<p class='phone'><cite>joakim:</cite> future version of mapping
table with refined semantics</p>
<p class='phone'><cite>dave:</cite> choose terms that can be
read from many formats</p>
<p class='phone'><cite>jean-pierre:</cite> there might be terms
that are useful but not (yet) widely supported</p>
</div>
<h2><a name="ActionSummary" id="ActionSummary">Summary of Action
Items</a></h2><!-- Action Items -->
<strong>[NEW]</strong> <strong>ACTION:</strong> felix to clarify
arrow + descriptions for the diagram in section 3 of UC &amp; req
dcouments [recorded in <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html#action01">http://www.w3.org/2009/04/16-mediaann-minutes.html#action01</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> veroniqueM to
update canonical processes use cases [recorded in <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html#action02">http://www.w3.org/2009/04/16-mediaann-minutes.html#action02</a>]<br />
<strong>[NEW]</strong> <strong>ACTION:</strong> vmalais to update
canonical processes use cases [recorded in <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html#action03">http://www.w3.org/2009/04/16-mediaann-minutes.html#action03</a>]<br />
&nbsp;<br />
[End of minutes]<br />
<hr />
<address>
Minutes formatted by David Booth's <a href=
"http://dev.w3.org/cvsweb/~checkout~/2002/scribe/scribedoc.htm">
scribe.perl</a> version 1.135 (<a href=
"http://dev.w3.org/cvsweb/2002/scribe/">CVS log</a>)<br />
$Date: 2009/04/16 10:46:04 $
</address>
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<h2>Scribe.perl diagnostic output</h2>[Delete this section
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<pre>
This is scribe.perl Revision: 1.135 of Date: 2009/03/02 03:52:20
Check for newer version at <a href=
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Guessing input format: RRSAgent_Text_Format (score 1.00)
Succeeded: s/provideers/providers/
Succeeded: s/writter/written/
Found Scribe: tbd
Found Scribe: wbailer
Inferring ScribeNick: wbailer
Scribes: tbd, wbailer
Default Present: Doug_Schepers, Felix
Present: Doug_Schepers Felix
WARNING: Fewer than 3 people found for Present list!
Agenda: <a href=
"http://www.w3.org/2008/WebVideo/Annotations/wiki/Meeting_Agenda_(In_Progress)">http://www.w3.org/2008/WebVideo/Annotations/wiki/Meeting_Agenda_(In_Progress)</a>
Found Date: 16 Apr 2009
Guessing minutes URL: <a href=
"http://www.w3.org/2009/04/16-mediaann-minutes.html">http://www.w3.org/2009/04/16-mediaann-minutes.html</a>
People with action items: felix veroniquem vmalais
</pre>[End of <a href=
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scribe.perl</a> diagnostic output]
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