Thursday Feb 01, 2007

semweb & FOAF

So one thing I have done inspired by last week's workshop has been to set up a personal FOAF file.

I used the foaf-a-matic to create it, and it can be browsed using the tabulator.

 

Reading my FOAF file using the tabulator

 

I shall probably use Henry Story's foaf file (who wrote about his contribution to the workshop here...) as a template some time soon; it has a richer information syntax. In fact Henry's write up is pretty good and offers a number of key links to progress one's understanding.I put him on my blog roll a couple of weeks ago.

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Wednesday Jan 24, 2007

What's the Semantic Web?

Today, Andreas Blumaur of the Semantic Web School, based in Vienna, Austria undertook a one day "Introduction to the Semantic Web". Much of this is new to me, some of it is old, but uses new words to describe old concepts and none of it is particularly easy. It'll take me a couple of days to work out what I've learned today and put it into my personal knowledge framework.

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Monday Aug 28, 2006

Semantic footprints through time

Another thought (about tags & prompting, see also here... or here...) is that prompting (& categories) inhibits evolution. Either the ideas being explored change, or the common use of words chnage. An example on this blog is that I should probably create a travel category on this blog rather than treat it as a qualifier of Culture, but because I am prompted, I have never bothered.

On the other hand, I also want you to able to find all the articles in a natural series, so I value the stability but its means that you have to learn about my use of the catagories. The search engine and article list on the sidebar are also category context sensitive which is good.

(I really need to see the coming Roller tags implementation, to see if tags and categories really are interchangable).

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Tuesday May 30, 2006

Visualising tag clouds

Two points come to mind on reflecting my conversation with Elias Torres at www20006, (See Tags and Spontaneity below...). First maybe on tag clouds we should use colour for highly used & less frequently used with Red being highly used and Blue (or Indigo) less frequently used. This should mean that the less frequently used tags, which are the most discriminatory (i.e. meaningful) are not visually eclipsed by the most heavily used.

Secondly, if we were to look at the structure "UNIX > Solaris > AIX, the significance would only be true if all taggers tagged the articles as UNIX & Solaris or UNIX & AIX, and only then could we be clear on the meaningfulness of a tag. This illustrates that a stranger may need to be familar with the crowd's use of language.

Thirdly I'm also not sure how we might 'refine' a query if we start with very meaningful tags, we would have to re-query, although the del.icio.us interface offers you a list of associated tags even for the smallest of queries.

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