Open Access News

News from the open access movement


Tuesday, February 08, 2005

Google Scholar and PubMed

Rita Vine, Google Scholar is a Full Year Late Indexing PubMed Content, SiteLines, February 8, 2005. Excerpt: '[T]ests conducted by me on Feburary 8 2005 suggest that Google Scholar is currently missing almost a full year of PubMed records....Results: For the 2004-2005 period, Google delivered 29,500 records; PubMed delivered over 658,000 for the same period. While some of these PubMed records in the larger set are PreMedline records that will ultimately be dumped from the database, there is simply no accounting for the enormous difference in the numbers, except to hypothesize that Google Scholar is missing very significant quantities of relatively recent records from PubMed....I tested by copying and pasting a distinctive phrase from the title of each article into Google Scholar, then clicked SEARCH to see if Google Scholar would retrieve the article. My results showed that Google Scholar failed to retrieve any PubMed content after February-March 2004, making Google Scholar almost one full year in arrears of PubMed.' (Thanks to T.J. Sondermann.)