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The intensity of a counting process is a measure of the rate of change of its predictable part. If a stochastic process is a counting process, then it is a submartingale, and in particular its Doob-Meyer decomposition is : where is a martingale and is a predictable increasing process. is called the cumulative intensity of and it is related to by :. ==Definition== Given probability space and a counting process which is adapted to the filtration , the intensity of is the process defined by the following limit: : . The right-continuity property of counting processes allows us to take this limit from the right.〔Aalen, O. (1978). Nonparametric inference for a family of counting processes. ''The Annals of Statistics'', 6(4):701-726. 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Intensity of counting processes」の詳細全文を読む スポンサード リンク
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