[Corpora-List] Fisher exact tests

From: Stefan Th. Gries (STGries@sitkom.sdu.dk)
Date: Fri Dec 20 2002 - 20:58:07 MET

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    Hi everybody

    For a current project involving collocations, a colleague and I need to
    compute several hundreds of F-E tests, some of which involve very high
    marginal totals even though the cooccurrence frequencies are very small. The
    question now is, do you happen to know of any
    (Windows/Macintosh/Linux-based)software that can cope with the enormous
    sizes of the resulting figures? An example:
    2 3 5
    1,584 10,204,711 10,206,295
    1,586 10,204,714 10,206,300

    Some scripts on the web seemed to do the job, but on second looks, the
    results seemd wrong because transforming tables (along the main diagonal)
    with such high figures lead to different results, inviting the inference
    that the scripts only computed approximations ... Any idea(s)?

    Stefan

    Stefan Th. Gries
    -----------------------------------------------------------
    IFKI, Southern Denmark University
    http://people.freenet.de/Stefan_Th_Gries
    -----------------------------------------------------------



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