UoL Library Blog

Develop, debate, innovate.

We’re number….

Posted by gazjjohnson on 27 January, 2009

Well according to this site, the LRA ranks 148th in the world of institutional repositories overall. It gives stats on size (222nd), visibility (186th), rich files (125th) and Scholar (125th).  We’re 15th in the UK.  Digging into the back files for the site I see they’ve calculated these figures as follows:

  • Size (S). Number of pages recovered from the four largest engines: Google, Yahoo, Live Search and Exalead.
  • Visibility (V). The total number of unique external links received (inlinks) by a site can be only confidently obtained from Yahoo Search and Exalead.
  • Rich Files (R). Only the number of text files in Acrobat format (.pdf) extracted from Google and Yahoo are considered.
  • Scholar (Sc). Using Google Scholar database we calculate the mean of the normalised total number of papers and those (recent papers) published between 2001 and 2008.

IMHO I might argue that I don’t agree with how they calculate their metrics – while only 20% of the overall figure is made up from size, repositories that are stuffed full of metadata get an especial boost to the top.  Nor does it account for how useful the rich files are – a repository filled with images isn’t as rich as one storing research articles, books and data.  Quality over quantity if you ask me!

But it’s another site for the doubtless many metrics fans across the UK HEI scene.  In case you’re wondering the site is based in Spain at the Cybermetrics Lab (research group) at the Consejo Superior de Investigaciones Científicas (CSIC).

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