Sebastian Herzig

sherzig's picture

Sebastian Johannes Ingo Herzig is currently a software systems engineer at NASA's Jet Propulsion Laboratory (JPL). Previously, he was a postdoctoral fellow and a Ph.D. student at the Model-Based Systems Engineering Center under Chris Paredis.

Contact Information

Manufacturing Research Center (MaRC)
Georgia Institute of Technology
813 Ferst Drive NW
Atlanta, Georgia 30332-0405

Room: MaRC 263
Tel.: +1 (404) 247-0290
E-Mail: sjiherzig(at)gmail.com

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Research Interests

It was already during my graduate studies at the Technical University Munich, Germany, that I developed a fascination with the recent paradigm shift in Systems Engineering towards using a more formal, model-based approach. The fact that such an approach leads to the creation and maintenance of a variety of formal interrelated (and semantically overlapping) models, all viewing the same system from different perspectives and addressing different concerns offers a great number of benefits and poses a variety of highly interesting research problems. In my PhD research, I focus on the question: how and to what extent can the consistency of interrelated, but disparate models be preserved during all phases of the development life-cycle? Particularly, I am interested in consistency management in Model-Based Systems Engineering and the development of formal methods for identifying and resolving inconsistencies. I apply the developed theory within the context of aerospace systems, particularly focusing on the interaction between manufacturing and design engineers. See the official project page for more details.

Background

Research Projects

Architecture Generation and Design Space Exploration: Generation and evaluation of structural variants of conceptual architectures of manufacturing cell configurations for early phase design and bid management activities. The space of possible architectures (described by functions and components) is defined using a SysML model, and optimal (and near optimal) architectures are determined using an automatic transformation of the SysML model to a mixed integer linear program (MILP).

Inconsistency Management (PhD work): Exploration of fundamental aspects of, and developing concepts for identifying and handling inconsistencies in a set of highly interrelated, heterogeneous models by making use of Bayesian reasoning. This project represents my PhD research contribution and is part of a research grant made available to Georgia Tech by the Boeing Corporation (St. Louis). Please see the official project page for more information and frequent updates. Click here for a copy of the PhD thesis.

Sonderforschungsbereich (SFB) 768 - Managing Cycles in Innovation Processes: Collaboration with TU Munich on exploring aspects of formal analysis of engineering models for the purpose of identifying incompatibilities, incompleteness and, generally, inconsistencies. More information about SFB 768 can be found by clicking here.

SysML-ModelCenter Integration (SyMo) (ongoing): Development of a plugin for NoMagic MagicDraw that enables the integration of descriptive system models authored in OMG SysML with analysis models composed in Phoenix Integration's ModelCenter. This project has been released open source under the Apache 2.0 license and the source code as well as pre-packaged binaries are available via GitHub.

iFab (Instant Foundry Adaptive Through Bits) Foundry (2011): Prediction of overall manufacturing cost and production time for defined manufacturing processes with uncertain outcomes through Monte Carlo analysis. See publicly available report here (contribution starts on page 197).

Teaching

Publications

2015
2014
Herzig, S. J. I., and C. J. J. Paredis, "Bayesian Reasoning Over Models", Workshop on Model-Driven Engineering, Verification, and Validation (MoDeVVa) at MoDELS, Valencia, Spain, pp. 69–78, 09/2014. Abstract  Download: HerzigParedis_BayesianReasoningMDE.pdf (691.52 KB)
2013
2011
Herzig, S. J. I., A. Qamar, A. Reichwein, and C. J. J. Paredis, "A Conceptual Framework for Consistency Management in Model-Based Systems Engineering", Proc. ASME 2011 International Design Engineering Technical Conf. & Computers and Information in Engineering Conf., Aug., 2011. Abstract
2010