Abstract
Robust design techniques, which are based on the concept of building quality into products or processes, are increasingly popular in many manufacturing industries. In this paper, we propose a new robust design model in the context of pharmaceutical production research and development. Traditional robust design principles have often been applied to situations in which the quality characteristics of interest are typically time insensitive. In pharmaceutical manufacturing processes, time-oriented quality characteristics, such as the degradation of a drug, are often of interest. As a result, current robust design models for quality improvement which have been studied in the literature may not be effective in finding robust design solutions. To address such practical needs, this paper develops a robust design model using censored data, which is perhaps the first attempt in the robust design field. We then study estimation methods, such as the expectation–maximization algorithm and the maximum likelihood method, in the robust design context. Finally, comparative studies are discussed for model verification via a numerical example.
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Change history
04 November 2020
This article has been retracted. Please see the Retraction Notice for more detail: https://doi.org/10.1007/s00170-020-06269-8
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Cho, B.R., Choi, Y. & Shin, S. RETRACTED ARTICLE: Development of censored data-based robust design for pharmaceutical quality by design. Int J Adv Manuf Technol 49, 839–851 (2010). https://doi.org/10.1007/s00170-009-2455-3
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DOI: https://doi.org/10.1007/s00170-009-2455-3