Shoaib Sufi talks about the Taverna Roadmap

In the afternoon, after everyone had worked through the 3 group tasks in the practical session: ‘Workflow Development in Digitisation’, we returned to hear from the Taverna Manager – Shoaib Sufi.

Shoib gave an interesting talk about where he sees Taverna going in the next few years and the further development of Taverna 3, including some of the projects that they hope to work with.

This was followed by Rob Haines from myGrid who gave more examples of Taverna Server Interfaces.

Sven Schlarb at IMPACT/myGrid Hackathon

Case Study:

A collection holder wants to reduce storage costs for his collections that
are currently available as TIFF master files. She/he heard that JPEG2000 is
a good candidate for storing digital master files, and she/he heard about
the efficiency of image compression when using lossy compression.

She/he knows that JPEG2000 compression can be “visually lossless”, so that
the compression is reversible, but she/he is still concerned about the
impact the JPEG2000 compression could have on OCR.

We suggest a Taverna workflow that creates an executable processing pipeline
for studying the results.

The workflow should have 1 TIFF image as input and a list of increasing
compression parameters which are used when encoding the image. The image
should then be decompressed before applying the OCR. Finally, the impact
of the compression on the OCR should be measured by comparing the original
OCR output to the OCR output of the compressed images.

IMPACT myGrid Taverna Hackathon

The Three Groups:

Group 1

Use the toolwrapper for providing access to a JPEG2000 encoding/decoding tool:

• Toolwrapper
  • https://github.com/impactcentre/interoperability-framework/tree/master/toolwrapper
• Tools
  • http://www.ece.uvic.ca/~frodo/jasper/

Group 2

Use Taverna for creating the workflow:

• Endpoints
  • http://fue.onb.ac.at:80/scape-kakadu631-service/Kakadu631.wsdl
  • http://fue.onb.ac.at:80/scape-tesseract301-service/Tesseract301.wsdl

Group 3

Use a Taverna beanshell for creating the Text comparison

• commons-lang-2.4.jar (/home/<youruser>/.taverna-home/lib/commons-lang-2.4.jar)

Carl Wilson from the BL concentrates on Taverna

The selection of groups has shown a definite preference for the more ‘user’ based tasks rather than ‘developer’ tasks, with 12 working on Group 1, 6 on Group 2 and only 3 on Group3.  However, quite a few attendees seemed happy to be involved in more than one group, or work in one, but support users in another.

General feeling is that this bodes well for tomorrow which has a more ‘practical’ based timetable.

http://impact-mygrid-taverna-hackathon.wikispaces.com/Background+Materials

Clemens Neudecker at the IMPACT myGrid Taverna Hackathon

The day started with an introduction to IMPACT from Clemens Neudecker:

and then an introduction to Taverna from Katy Wolstencroft:

Katy Wolstencroft gives an introduction to Taverna