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Re: Re: how to describe the range of this kind of property

From: l <linst@yourw.com.cn>
Date: Wed, 30 Mar 2005 23:41:44 +0800
To: "Jeremy Wong" <50263336@student.cityu.edu.hk>
Cc: "semantic-web" <semantic-web@w3.org>
Message-ID: <E1DGfKD-000626-Qy@frink.w3.org>
Jeremy Wong,hi

thanks.	
I prefer the first way. But how to describe the range of s:students? As i said, if it is <rdfs:range rdf:resource="#person"/>, it is impossible to use rdf:parseType="Collection" after s:students.
regrads.

======= 2005-03-30 23:32:57 艇壓栖佚嶄亟祇=======

>l,
>
>There are 2 ways to say that there are 3 students in the course.
>
>A) Count the number of elements in the collection. Note that a collection is 
>closed, i.e. no more elements can be added.
>
>B) Add a property like "studentCount" to describe that there are 3 students.
>
>
>Jeremy
>
>----- Original Message ----- 
>From: "l" <linst@yourw.com.cn>
>To: "semantic-web" <semantic-web@w3.org>
>Sent: Wednesday, March 30, 2005 11:12 PM
>Subject: how to describe the range of this kind of property
>
>
>> Hi all,
>>
>> It really confuse me.
>> In http://www.w3.org/TR/2004/REC-rdf-primer-20040210, there is a example:
>>   <rdf:Description rdf:about="http://example.org/courses/6.001">
>>      <s:students rdf:parseType="Collection">
>>            <rdf:Description rdf:about="http://example.org/students/Amy"/>
>>            <rdf:Description 
>> rdf:about="http://example.org/students/Mohamed"/>
>>            <rdf:Description 
>> rdf:about="http://example.org/students/Johann"/>
>>      </s:students>
>>   </rdf:Description>
>>
>>
>> My question is how to describe the range of property s:students. Below is 
>> a wrong description: <rdfs:range rdf:resource="#person"/>. This 
>> description is not compatible with above example. With this range 
>> description, I could only use s:students like this:
>>  <rdf:Description rdf:about="http://example.org/courses/6.001"> 
>> <s:students rdf:about="http://example.org/students/Amy"/>
>>  <rdf:Description rdf:about="http://example.org/courses/6.001"> 
>> <s:students rdf:about="http://example.org/students/Mohamed"/>
>>  <rdf:Description rdf:about="http://example.org/courses/6.001"> 
>> <s:students rdf:about="http://example.org/students/Johann"/>
>>
>>
>> But actually, I want to say that this course has and only has 3 students, 
>> no more, no less.
>> How could I do.
>> Please help.
>>
>> Thanks and regards
>>
>>
>>  
>>
>>
>>     
>>  
>>          
>> 
>
>
>

= = = = = = = = = = = = = = = = = = = =
			

        崑
撰
 
				 
        l
        linst@yourw.com.cn
          2005-03-30

Received on Wednesday, 30 March 2005 15:41:45 UTC

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