2 Search Results for "Mayer-John, Eckart"

Document
DOI: 10.4230/LIPIcs.ECRTS.2020.21
Control-System Stability Under Consecutive Deadline Misses Constraints

Authors: Martina Maggio, Arne Hamann, Eckart Mayer-John, and Dirk Ziegenbein

Published in: LIPIcs, Volume 165, 32nd Euromicro Conference on Real-Time Systems (ECRTS 2020)

Abstract
This paper deals with the real-time implementation of feedback controllers. In particular, it provides an analysis of the stability property of closed-loop systems that include a controller that can sporadically miss deadlines. In this context, the weakly hard m-K computational model has been widely adopted and researchers used it to design and verify controllers that are robust to deadline misses. Rather than using the m-K model, we focus on another weakly-hard model, the number of consecutive deadline misses, showing a neat mathematical connection between real-time systems and control theory. We formalise this connection using the joint spectral radius and we discuss how to prove stability guarantees on the combination of a controller (that is unaware of deadline misses) and its system-level implementation. We apply the proposed verification procedure to a synthetic example and to an industrial case study.
Cite as

Martina Maggio, Arne Hamann, Eckart Mayer-John, and Dirk Ziegenbein. Control-System Stability Under Consecutive Deadline Misses Constraints. In 32nd Euromicro Conference on Real-Time Systems (ECRTS 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 165, pp. 21:1-21:24, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)

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@InProceedings{maggio_et_al:LIPIcs.ECRTS.2020.21,
  author =	{Maggio, Martina and Hamann, Arne and Mayer-John, Eckart and Ziegenbein, Dirk},
  title =	{{Control-System Stability Under Consecutive Deadline Misses Constraints}},
  booktitle =	{32nd Euromicro Conference on Real-Time Systems (ECRTS 2020)},
  pages =	{21:1--21:24},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-152-8},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{165},
  editor =	{V\"{o}lp, Marcus},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.ECRTS.2020.21},
  URN =		{urn:nbn:de:0030-drops-123845},
  doi =		{10.4230/LIPIcs.ECRTS.2020.21},
  annote =	{Keywords: Real-Time Control, Deadline Misses, Weakly Hard Models}
}
Document
Short Paper
DOI: 10.4230/OASIcs.LDK.2019.17
Translation-Based Dictionary Alignment for Under-Resourced Bantu Languages

Authors: Thomas Eckart, Sonja Bosch, Dirk Goldhahn, Uwe Quasthoff, and Bettina Klimek

Published in: OASIcs, Volume 70, 2nd Conference on Language, Data and Knowledge (LDK 2019)

Abstract
Despite a large number of active speakers, most Bantu languages can be considered as under- or less-resourced languages. This includes especially the current situation of lexicographical data, which is highly unsatisfactory concerning the size, quality and consistency in format and provided information. Unfortunately, this does not only hold for the amount and quality of data for monolingual dictionaries, but also for their lack of interconnection to form a network of dictionaries. Current endeavours to promote the use of Bantu languages in primary and secondary education in countries like South Africa show the urgent need for high-quality digital dictionaries. This contribution describes a prototypical implementation for aligning Xhosa, Zimbabwean Ndebele and Kalanga language dictionaries based on their English translations using simple string matching techniques and via WordNet URIs. The RDF-based representation of the data using the Bantu Language Model (BLM) and - partial - references to the established WordNet dataset supported this process significantly.
Cite as

Thomas Eckart, Sonja Bosch, Dirk Goldhahn, Uwe Quasthoff, and Bettina Klimek. Translation-Based Dictionary Alignment for Under-Resourced Bantu Languages. In 2nd Conference on Language, Data and Knowledge (LDK 2019). Open Access Series in Informatics (OASIcs), Volume 70, pp. 17:1-17:11, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2019)

Copy BibTex To Clipboard

@InProceedings{eckart_et_al:OASIcs.LDK.2019.17,
  author =	{Eckart, Thomas and Bosch, Sonja and Goldhahn, Dirk and Quasthoff, Uwe and Klimek, Bettina},
  title =	{{Translation-Based Dictionary Alignment for Under-Resourced Bantu Languages}},
  booktitle =	{2nd Conference on Language, Data and Knowledge (LDK 2019)},
  pages =	{17:1--17:11},
  series =	{Open Access Series in Informatics (OASIcs)},
  ISBN =	{978-3-95977-105-4},
  ISSN =	{2190-6807},
  year =	{2019},
  volume =	{70},
  editor =	{Eskevich, Maria and de Melo, Gerard and F\"{a}th, Christian and McCrae, John P. and Buitelaar, Paul and Chiarcos, Christian and Klimek, Bettina and Dojchinovski, Milan},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/OASIcs.LDK.2019.17},
  URN =		{urn:nbn:de:0030-drops-103819},
  doi =		{10.4230/OASIcs.LDK.2019.17},
  annote =	{Keywords: Cross-language dictionary alignment, Bantu languages, translation, linguistic linked data, under-resourced languages}
}
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