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In order to realize the core guiding role of WBS (Work Breakdown Structure) during a complex
product project business process and to make it become the real deliverer of effective information, this study
starts from the analysis of the information supply chain when a WBS starts and based on the perspective of
Mapreduce programming model, establishes a mode which determines the unstable links of the information
supply chain by excavating the historical data. Furthermore, this study proposes the idea of tracing to the
source of the unstable links, breaks the plight of WBS optimization under the causal perspective and constructs
a method which can obtain the recommendations of WBS optimization by finding the correlations between the
deviation information and the corresponding dimension information of WBS.
