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Alpha algorithm : ウィキペディア英語版
Alpha algorithm

The α-algorithm is an algorithm used in process mining, aimed at reconstructing causality from a set of sequences of events.
It was first put forward by van der Aalst, Weijters and Măruşter.〔van der Aalst, W M P and Weijters, A J M M and Maruster, L (2003). "Workflow Mining: Discovering process models from event logs", ''IEEE Transactions on Knowledge and Data Engineering'', vol 16〕 Several extensions or modifications of it have since been presented, which will be listed below.
It constructs P/T nets with special properties (workflow nets) from event logs (as might be collected by an ERP system). Each transition in the net corresponds to an observed task.
==Short description==
The algorithm takes a workflow log W\subseteq T^ as input and results in a workflow net being constructed.
It does so by examining causal relationships observed between tasks. For example, one specific task might always precede another specific task in every execution trace, which would be useful information.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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