On Mar/29/10 10:01 am, Kingsley Idehen wrote:
David Huynh wrote:
On Mar/29/10 12:31 am, Kingsley Idehen wrote:
All,
A very nice data cleansing tool from David and Co. at Freebase.
CSVs are clearly the dominant data format in the structured open
data realm. This tool deals with ETL very well. Of course, for those
who appreciate OWL, a lot of what's demonstrated in this demo is
also achievable via "context rules". Bottom line (imho), nice tool
that will only aid improving Web of Linked Data quality at the data
set production stage.
Links:
1. http://vimeo.com/10081183 -- Freebase Gridworks
Thanks, Kingsley. The second screencast, by Stefano Mazzocchi, also
demonstrates a few other interesting features:
http://www.vimeo.com/10287824
David
David,
Yes, very nice!
Now here is the obvious question, re. broader realm of faceted data
navigation, have you guys digested the underlying concepts
demonstrated by Microsoft Pivot?
I've seen the TED talk on Pivot. It's a very well polished
implementation of faceted browsing. The Seadragon technology integration
and animations are well executed. As far as "underlying concepts" in
faceted browsing go, I haven't noticed anything novel there.
One thing to note: in each Pivot demo example, there is data of exactly
one type only--say, type people. So it seems, using Microsoft Pivot, you
can't pivot from one type to another, say, from people to their
companies. You can't do that example I used for Parallax: US presidents
-> children -> schools. Or skyscrapers -> architects -> other buildings.
So from what I've seen, as it currently is, Microsoft Pivot cannot be
used for browsing graphs because it cannot pivot (over graph links).
Furthermore, I believe that to get Pivot to perform well, you need a
cleaned up, *homogeneous* data set, presumably of small size (see their
Wikipedia example in which they picked only the top 500 most visited
articles). SW/linked data in their natural habitat, however, is rarely
that cleaned up and homogeneous ... So by the time you can use Pivot on
SW/linked data, you will already have solved all the interesting and
challenging problems.
I do applaud their recent offering of the Pivot widget for embedding
into any arbitrary site. That should make faceted browsing more
accessible to web authors, as Exhibit has done. Pivot is way more
polished and hopefully scales better than Exhibit, although Exhibit is
more malleable as a piece of software.
David
