Discussions Archives - IMPACT Centre of Competence

Cost estimation for 100% postcorrection

Which will be the cost estimation for a project pursuing 100% post correction of OCR in the full text offered to the users (based on an average book of 200-300 pages)? An example is the Gutenberg project (http://www.gutenberg.org/). Has your institution experience on this service?

What’s in a word?

Word error rate is often used as a measure of OCR accuracy. Although words are the relevant unit in information retrieval, the definition of word in the context of OCR is not as simple as it might appear at first glance. This post compiles some of my ideas on the relation between words and characters.

Punctuation in OCR evaluation

While evaluating OCR, some users demand that diacritics should not be considered an error since they are often neglected for information retrieval (search engines). This request raises some doubts about the expected behavior. What do you think about the following issues?

How can I select the best OCR engine for my digitisation requirements?

I guess there is no “best” OCR engine independently of the purpose but, is there any protocol to compare their performance? Perhaps, the Centre of Competence could provide some sample sets and evaluation measures on those sample sets. If they provide sufficient coverage, probably my requirements are similar to one of the subsets and it … Continue reading

IMPACT/myGrid Hackathon – 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.

The IMPACT Framework – From Tools to Workflows

This practical session started with the attendees introducing themselves and splitting up into 3 groups, so that each could work on a different set of tasks based on a Case Study.

IMPACT/myGrid Taverna Hackathon

Full details of this workshop are available through the workshop wiki at: http://impact-mygrid-taverna-hackathon.wikispaces.com/Background+Materials

IMPACT Final Conference – Blog-index

The whole conference was blogged and photographed with presentations uploaded to Slideshare and videos to Vimeo. These are also embedded within the blogs on this site. This post contains direct links to all posts made at the Final Conference. Please do feel free to add comments or thoughts below the posts.

IMPACT Final Conference – Research Parallel Sessions Brief Summary

Parallel Session 1: Research was dedicated to presentations and discussions around the state of the art research tools for document analysis developed via the IMPACT Project. As you might guess from the slides below, the information packed into these presentations could fill a whole new two-day conference! But for now, a brief summary will have to suffice and … Continue reading

IMPACT Final Conference – Digitisation Tips Parallel Session

Aly Conteh (BL) hosted the parallel Q&A session on Digitisation tips. Pannel members included Astrid Verheusen (Manager of the Digital Library Programme and Head of the Innovative Projects Department, KB National Library of the Netherlands), Geneviève Cron (OCR expert, Bibliothèque nationale de France), Christa Müller (Director Digital Services Department, Austrian National Library), Majlis Bremer-Laamanen (Director … Continue reading