[Corpora-List] question about Wordsmith tools (log-likelihood)

From: Luciana Diniz (esllsdx@langate.gsu.edu)
Date: Wed Sep 20 2006 - 22:50:07 MET DST

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    Hello!

    I'm trying to make sense of the log likelihood formula (in the Wordsmith
    Tools manual), and I'm not sure what "d" means in:

    "d := frequency of pairs involving neither w1 nor w2"

    Does it mean the frequency of the all possible collocates (with span
    1:1) minus the frequency of the word 1 (isolated frequency) minus the
    frequency of word 2 (isolated frequency)?
    If this is the case, would "d" be very close to the total number of
    words in the corpus?

    Also, if this is the case, what if I choose a different span? Would this
    change the value of "d"?

    I'm very confused and I'd really appreciate it if somebody could help me
    :)

    Thank you!
    Luciana.

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