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Bayesian Prediction of SMART Power Semiconductor Lifetime with Bayesian Networks

  • Kathrin Plankensteiner
  • Olivia Bluder
  • Jürgen Pilz
Conference paper
Part of the Springer Proceedings in Mathematics & Statistics book series (PROMS, volume 63)

Abstract

In this paper Bayesian networks are used to predict complex semiconductor lifetime data. The data of interest is a mixture of two lognormal distributed heteroscedastic components where data is right censored. To understand the complex behavior of data corresponding to each mixture component, interactions between geometric designs, material properties, and physical parameters of the semiconductor device under test are modeled by a Bayesian network. For the network’s structure and parameter learning the statistical toolboxes BNT and bayesf Version 2.0 for MATLAB have been extended. Due to censored observations MCMC simulations are necessary to determine the posterior density distribution and evaluate the network’s structure. For the model selection and evaluation goodness of fit criteria such as marginal likelihoods, Bayes factors, predictive density distributions, and sums of squared errors are used. The results indicate that the application of Bayesian networks to semiconductor data provides useful information about the behavior of devices as well as a reliable alternative to currently applied methods.

Notes

Acknowledgements

The authors would like to thank Roland Sleik and Michael Ebner for the measurement support as well as Michael Glavanovics, Michael Nelhiebel, and Christoph Schreiber for valuable discussions on the topic.

This work was jointly funded by the Austrian Research Promotion Agency (FFG, Project No. 831163) and the Carinthian Economic Promotion Fund (KWF, contract KWF-1521 | 22741 | 34186).

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Kathrin Plankensteiner
    • 1
    • 2
  • Olivia Bluder
    • 1
  • Jürgen Pilz
    • 2
  1. 1.KAI - Kompetenzzentrum Automobil- und Industrieelektronik GmbHVillachAustria
  2. 2.Alpen-Adria-Universität KlagenfurtKlagenfurtAustria

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