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一種基于Petri網(wǎng)和因果關(guān)系矩陣的事件日志過程挖掘方法

2020-12-14 04:31范濤方賢文

范濤 方賢文

摘 要:提出一種基于Petri網(wǎng)和因果關(guān)系矩陣的事件日志過程挖掘方法.基于Petri網(wǎng)和因果關(guān)系矩陣的事件日志過程挖掘算法,利用因果關(guān)系矩陣進行過程挖掘,其過程模型可以更好地匹配系統(tǒng)產(chǎn)生的事件日志集.

關(guān)鍵詞:Petri網(wǎng);因果關(guān)系矩陣;事件日志;過程挖掘

[中圖分類號]TP391.9 ? [文獻標志碼]A

Abstract:An event log process mining method based on Petri net and causality matrix is proposed.The process mining algorithm based on the idea of mutual transformation between Petri nets and causal relationship matrix uses the causal relationship matrix for process mining,and the resulting process model can better match the event log set generated by the system.

Key words:Petri net;causality matrix;event log;process mining

隨著信息時代的到來,過程挖掘[1]技術(shù)得到了飛速發(fā)展,取得了重要成果.Alast等人提出的α算法[2]是最早的過程挖掘算法,它不僅被廣泛使用,而且對后來的算法有著廣泛而又深遠的影響.清華大學(xué)聞立杰團隊利用改進的α算法——α*算法[3]——從事件日志中挖掘出了不可見任務(wù)[4],使其具備了挖掘不可見任務(wù)即隱變遷的能力.筆者針對過程挖掘中由于模型和事件日志的復(fù)雜性,很難將此過程數(shù)字化表示并與計算機相結(jié)合提高工作效率這一問題,提出了一種基于Petri網(wǎng)和因果關(guān)系矩陣的事件日志過程挖掘方法.

1 基本概念

3 總結(jié)

本文提出一種基于Petri網(wǎng)和因果關(guān)系矩陣的事件日志過程挖掘方法,利用因果關(guān)系矩陣進行過程挖掘,得到的過程模型可以更好地匹配系統(tǒng)產(chǎn)生的事件日志集.計算機直接處理過程模型很棘手,特別是處理復(fù)雜的過程模型對計算機的相關(guān)性能有很高的要求,將過程模型轉(zhuǎn)化成因果關(guān)系矩陣可以大大減少計算機的工作量,只需要能夠處理簡單數(shù)字矩陣的計算機就可以完成此項工作.Petri網(wǎng)圖形和因果關(guān)系矩陣的相互轉(zhuǎn)化對于促進業(yè)務(wù)流程的數(shù)字化發(fā)展也有很大的幫助.在未來的工作中,還要對此方法的代碼實現(xiàn)做進一步研究,爭取早日上傳此系統(tǒng)框架并應(yīng)用于實際.

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編輯:琳莉