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82 The PCB Magazine • December 2016 UNDERSTANDING PREDICTIVE ENGINEERING The PE framework (Figure 7) imports critical metrics and data from manufacturing through the PDM database [11] . Since concurrent engi- neering has such a short product focus, the wisdom and experience acquired in concurrent manufacturing can be archived in PDM. The PE software architecture of tradeoff models and supporting software (Figure 8) pro- vides the user with global information. As fea- tures are selected, they can be placed back in the PDM database. Selection of layout factors, Figure 7: Proposed predictive engineering framework. Figure 9: Product generation framework. Figure 8: Proposed predictive engineering architecture.