PBWA:A Provenance-Based What-If Analysis Approach for Data Mining Processes

摘要

This paper presents a Provenance-based what-if analysis approach(PBWA) for data mining processes,so decision makers can examine the latest mining result under hypothetical business contexts.It fills the gap that data mining only reveals past status of enterprises with historical data.Provenance information is a kind of metadata of data mining processes.PBWA uses it to identify relevant operation path and intermediate results that is affected by hypothetical business contexts.It refreshes the mining result by partially rerunning the affected portions.Different from previous studies only for relational operations,PBWA can take more general operations into account.Besides,it focuses on the whole mining processes.Experiments demonstrate that when the affected ratio is less than 74% and 87% in different contexts,PBWA can achieve better time performance.