Code4Lib day 3

Ian Davis the Talis CTO held the keynote this Thursday morning. The topic was information sharing in the past and in the future. Ian claimed that the the success of the web was not just about free (free as in free beer) information sharing, but also very much based on the ability to link documents.

I must admit that it felt a bit like he was preaching to the choir. The main points was that we should open up data and enable a rich semantic web of linked data. Hard to disagree wit 🙂

One point that that I feel worth stressing was when he put up a conjecture on his slides: Conjecture: Data outlasts code. This leads to the following: Corollary: Open data is more important than open source. I am not sure that I necessarily agree, but it is food for thought.

Next on was Edward M. Corrado the head of librarytechnology on Birmingham University. The topic of his talk was the “Open Platform Strategy”. At the core of it I think his main point was that vendors are starting to open up, and even though it is not completely open source we should embrace their initiative (OCLC and Ex Libris are both doing this). It seems to me as a very pragmatic approac (and I love that!), but also a road that could lead to vendor lock-in.

Seen in the light of Sebastian’s (Index Data) thunder talk for open standards yesterday I guess Edward and Sebastian could have a heated debate… 🙂

A modern open webservice-based GIS infrastructure” by Adam Soroka & Bess Sadler

GIS systems needs special data repositories because GIS data is weird:

  • The data is huge (terabyte scale)
  • It lives in odd formats
  • It requires special tools for use
  • It deserves special descriptions

Open geospatial consortium produces standards (not tools) for GIS data. There exists sevaral standards for GIS data:

  • ISO TC 211
  • GML (geographic markup language)
  • ISO 19115 (UML based) / ISO 19139 (standard for serializing 19115 to XML)

Service standards (retrieve data):

  • Web map service – Query is simple key/value and it can return a veriaty of formats (pdf, png, jpg etc.)
  • Web feature service – returns GML (geographic markup language)

Tools needed to get a GIS running:

  • Database
  • Geoserver
  • Geonetwork

“Vizualizing Media Archives: A Case Study” by Chris Beer and Courtney Michael.

Media archives are different. Important to present media data in context. Linked data is used to present data while keeping them in context.

Media archives are visual, and traditional library interfaces are almost all text based. So what they have made is a system to grpahically display images and their relations in a graph – the graph is interactive allowing the user to browse through the data and change their focus.

(Notes by Mikkel, Mads & Jørn)

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