Peter likes Carole Goble's project, but is less sure about Carole's fondness for Google.
Google Scholar is excellent for undergraduates who need the odd article but not for real scholars -- should be called Google Student!
The reality of Google Scholar is:
- Secrecy -- about sources, journals, time span, size -- everything
- Huge gaps in collections crawled -- Google Scholar finds far fewer results than native search engines [I wonder if this is related to how Google displays result statistics; numbers given in Google results do vary and I've heard an explanation for this which I now can't recall ...]
- Crawling not allowed by e.g. Elsevier
Cited-by numbers are unreliable -- following links shows that the "citing" articles do *not*
cite the "cited" articles. And it displays a number but only shows the first few. Google matches cited/citing references "like a senile neighbour" e.g. confusing zip codes or page numbers for publication years (i.e., it's machine-reading citations using relatively crude algorithms, and results aren't eyeballed for accuracy). Also contains links to e.g. journal subscription rates pages as "scholarly documents". This is a major concern because people use its flawed data (e.g. numbers of results or citations) in analyses and debates; particularly disturbing since there is talk of Google Scholar's citation figures being used for e.g. promotion, tenure and funding decisions.
1 Can an infatuation be debunked, or only a myth?
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