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Re: Yet Another LOD cloud browser

From: David Huynh <dfhuynh@alum.mit.edu>
Date: Fri, 15 May 2009 09:53:03 -0700
Message-ID: <4A0D9DEF.1050609@alum.mit.edu>
To: Linked Data community <public-lod@w3.org>
CC: semantic-web@w3.org
Kingsley Idehen wrote:
> David Huynh wrote:
>> Sherman,
>>
>> Good to see more faceted browsing work on LOD!
>>
>> Will you be considering showing actual data or is showing the schema 
>> your end goal? For example, I typed in "Microsoft", and I couldn't 
>> seem to get any information about Microsoft. I only saw that there 
>> are some other things related to Microsoft, e.g., people, but I 
>> couldn't see what those things are (e.g., specifically, such as Bill 
>> Gates). I'd like to show you what I mean but I can't seem to get a 
>> permanent link to the state of the app.
>>
>> David
>>
>> Sherman Monroe wrote:
>>> Hi All,
>>>
>>> Taking inspiration from Longwell[1] and Parallax[2], I present yet 
>>> another linked data browser[3]. It uses the Virtuoso Facets Web 
>>> service API [4] and runs against the public LOD cloud instance of 
>>> Virtuoso [5]. I believe such faceted search UIs could be a nice 
>>> compromise between SPARQL and a full-blown Cypher-based NL user 
>>> interface[6].
>>>
>>> Feedback appreciated.
>>>
>>> Hints:
>>>
>>> - Click a breadcrumb at the top to navigate your query path
>>> - Click "Your query" to view the filter details, click the nodes 
>>> there to navigate the path, click the icons there to modify the filter
>>> - Click the *green plus sign button* to add a filter
>>> - Click the *blue undo button* to unbound a node value
>>>
>>> Notes:
>>>
>>> I was amazed in the many instances where I got better results from 
>>> LOD dataspace than from Google/Technorati/Wikipedia. For example, 
>>> searching Monopoly, then filtering to the 
>>> /umbel-sc:MentalSituations/ category gave me a nice (and in some 
>>> cases humorous) list of Monopoly knock-offs. I tried finding such a 
>>> list on the WWW with no luck 
>>> <http://www.google.com/search?q=Monopoly%20knockoffs>. Kingsley 
>>> tells me that Entity Rank [4] has to do with this, but I wonder 
>>> whether this quality will stick as the cloud increases.
>>>
>>>
>>> References:
>>> [1] http://simile.mit.edu/wiki/Longwell
>>> [2] http://mqlx.com/~david/parallax/ 
>>> <http://mqlx.com/%7Edavid/parallax/>
>>> [3] http://ec2.monrai.com:8890/facets
>>> [4] http://lod.openlinksw.com/fct/facet_doc.html
>>> [5] http://lod.openlinksw.com
>>> [6] http://cypher.monrai.com
>>>
>>> Enjoy,
>>>
>>> -- 
>>>
>>> Thanks,
>>> -sherman
>>>
>>> I pray that you may prosper in all things and be healthy, even as 
>>> your soul prospers
>>> (3 John 1:2)
>>
>>
>>
> David,
>
> Sherman's razrobase browser is using the REST API provided by the 
> Virtuoso instance at: <http://lod.openlinksw.com>, all you have to do 
> re. "Microsoft" is go there and type in pattern: Microsoft .
>
> Once you do that, you will see an initial Entity Ranked page of 
> associated Entity URIs, text excerpts from literal values plus bars 
> intidicating Entity Rank and Text pattern match frequencies that drive 
> the ordering.  At this stage, assuming you don't already see the 
> Entity URI for "Microsoft) you can pivot on: Type (razorbase:Category) 
> or Poperties (razorbase:Information) to narrow the focus of your quest.
>
> The difference right now is that Sherman hasn't implemented the 
> critical "retry" and "timeout" functionality that lie at the core of 
> this system,  once  this is implemented our basic UI and his should 
> produce similar results with the only variance that our UI resides 
> inside Virtuoso while Razorbase is making RESTful calls from the 
> outside :-)
>
> I hope this clarifies things.
>
Thanks for the clarification, Kingsley.

So, I typed in "Microsoft" and got to
    http://lod.openlinksw.com/fct/facet.vsp?cmd=text&sid=60306
Which doesn't look like a permanent link for referring to the query I 
just typed. Copying and pasting that URL to a different browser yields

    An unexpected error was encountered while processing your request.
    Diagnostics

    SQLSTATE: 22023

    SQLMSG  : SR016: Function length needs a string or array as its 
argument,
    not an argument of type 189 (= INTEGER)

But anyhow, it's not a big deal.

My next question is, how does a person know which one among those 
results is *the* Microsoft? There are half a dozen dbpedia:Microsoft, so 
which one is the one? And if they are all the same thing, why are there 
multiple copies? Is it a glitch in the browsing engine or a glitch in 
the data? Also, I suspect that a random user might not be aware of 
dbpedia at this time, so perhaps "dbpedia:Microsoft" might not sound 
like *the* Microsoft, at least without any further detail. Maybe one 
copy of  "Microsoft Corporation (source: Wikipedia, data governance: 
Dbpedia)" might sound more comprehensible? Better yet, an image of 
Microsoft logo next to that would make things crystal clear. Even better 
would be to see the description, "Microsoft Corporation is an American 
multinational computer technology corporation, which rose to dominate 
the home computer operating system market with MS-DOS in the mid-1980s, 
followed by the Windows line of operating systems." below it.

David
Received on Friday, 15 May 2009 16:53:41 GMT

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