Re: handling Action subtypes defined outside of schema.org namespace? + as:verb

On Mon, Oct 13, 2014 at 9:07 AM, ☮ elf Pavlik ☮ <
perpetual-tripper@wwelves.org> wrote:

> Hi,
>
> Based on discussions in Social WG around ActivityStreams2.0 I would like
> to ask for help with clarifying something about schema.org Action
> subtree design. In particular how to recognize subtypes of schema:Action
> defined outside of schema.org .


Would the basic schema.org extension mechanism
<http://schema.org/docs/extension.html> suffice here?

That is, something like http://schema.org/InteractAction/HugAction work?


> While on it I will also mention how
> as:verb[1] tries to address it.
>
> Given example Action:
>
> {
>   "@context": "http://schema.org",
>   "@type": "WatchAction",
>   "actionStatus": "CompletedActionStatus",
>   "agent" : {
>     "@type": "Person",
>     "name": "Kevin Bacon"
>   },
>   "object" : {
>     "@type": "Movie",
>     "name": "Footloose"
>   },
>   "startTime" : "2014-03-01"
> }
>
> I need knowledge from WatchAction and ConsumeAction definitions, in
> particular *rdfs:subClassOf* to recognize it as subtype of Action
>
> <div typeof="rdfs:Class" resource="http://schema.org/WatchAction">
>   <span class="h" property="rdfs:label">WatchAction</span>
>   <span property="rdfs:comment">The act of consuming dynamic/moving
> visual content.</span>
>    <span>Subclass of: <a property="rdfs:subClassOf"
> href="http://schema.org/ConsumeAction">ConsumeAction</a></span>
> </div>
>
> <div typeof="rdfs:Class" resource="http://schema.org/ConsumeAction">
>   <span class="h" property="rdfs:label">ConsumeAction</span>
>   <span property="rdfs:comment">The act of ingesting
> information/resources/food.</span>
>    <span>Subclass of: <a property="rdfs:subClassOf"
> href="http://schema.org/Action">Action</a></span>
> </div>
>
> So having
>
> {
>   "@context": ["http://schema.org", { "ex": "http://example.net/#" }]
>   "@type": "ex:HugAction",
>   "actionStatus": "CompletedActionStatus",
>   "agent" : {
>     "@type": "Person",
>     "name": "Alice"
>   },
>   "object" : {
>     "@type": "Person",
>     "name": "Bob"
>   },
>   "startTime" : "2014-03-01"
> }
>
> I would also need way to discover, or have prior knowledge about
> *rdfs:subClassOf* definition for ex:HugAction and possibly its super
> classes until schema:Action
>
> Now in my early review of ActivityStreams 2.0 I suggested to use
> subtypes of as:Activity similar as in schema:Action where we wouldn't
> need additional property *verb*. (eg "verb": "ex:hug" }. Later other
> group members suggested that by using as:verb we can always use "@type":
> "as:Action" and by restricting it with rdfs:domain as:Activity even
> infer as:Activity type.
>
> I notice that by not using subtypes in as:Action we loose possibility
> that various properties can include them in their domains. But I don't
> think that would happen with externally defined types anyways.
>
> Would construct like as:verb make sense for schema:Action as well, at
> least as extension mechanism?
>
> Cheers!
>
> [1]
>
> http://jasnell.github.io/w3c-socialwg-activitystreams/activitystreams2-vocabulary.html#dfn-verb-term
>