Pointwise mutual information - Wikipedia

In statistics, probability theory and information theory, pointwise mutual information (PMI),[1] or point mutual information, is a measure of association. It compares the probability of two events occurring together to what this probability would be if the events were independent.[2] PMI (especially in its positive pointwise mutual information variant) has been described as "one of the most import

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相互情報量（Mutual information）を利用した語の共起度測定<Turney02>．