Publikationen AS: Bibliographie 2009 BibTeX
@inproceedings {INPROC-2009-94,
author = {Nazario Cipriani and Mike Eissele and Andreas Brodt and Matthias Gro{\ss}mann and Bernhard Mitschang},
title = {{NexusDS: A Flexible and Extensible Middleware for Distributed Stream Processing}},
booktitle = {IDEAS '09: Proceedings of the 2008 International Symposium on Database Engineering \& Applications},
editor = {ACM},
publisher = {ACM},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
pages = {152--161},
type = {Konferenz-Beitrag},
month = {September},
year = {2009},
keywords = {Data Stream Processing; Stream Databases; Middleware Platforms for DataManagement; P2P and Networked DataManagement; Database Services and Applications},
language = {Englisch},
cr-category = {C.2 Computer-Communication Networks,
C.5 Computer System Implementation,
H.2 Database Management},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {ABSTRACT
Techniques for efficient and distributed processing of huge, unbound data
streams have made some impact in the database community. Sensors and data
sources, such as position data of moving objects, continuously produce data
that is consumed, e.g., by location-aware applications. Depending on the domain
of interest, e.g. visualization, the processing of such data often depends on
domain-specific functionality. This functionality is specified in terms of
dedicated operators that may require specialized hardware, e.g. GPUs. This
creates a strong dependency which a data stream processing system must consider
when deploying such operators. Many data stream processing systems have been
presented so far. However, these systems assume homogeneous computing nodes, do
not consider operator deployment constraints, and are not designed to address
domain-specific needs.
In this paper, we identify necessary features that a exible and extensible
middleware for distributed stream processing of context data must satisfy. We
present NexusDS, our approach to achieve these requirements. In NexusDS, data
processing is specified by orchestrating data flow graphs, which are modeled as
processing pipelines of predefined and general operators as well as
custom-built and domain-specific ones. We focus on easy extensibility and
support for domain-specific operators and services that may even utilize
specific hardware available on dedicated computing nodes},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-94&engl=0}
}
@inproceedings {INPROC-2009-86,
author = {Matthias Grossmann and Nicola H{\"o}nle and Carlos L{\"u}bbe and Harald Weinschrott},
title = {{An Abstract Processing Model for the Quality of Context Data}},
booktitle = {Proceedings of the 1st International Workshop on Quality of Context},
publisher = {Springer},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
pages = {132--143},
type = {Workshop-Beitrag},
month = {Juni},
year = {2009},
keywords = {uncertainty; inconsistency; trust; processing model},
language = {Englisch},
cr-category = {H.2.8 Database Applications},
ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2009-86/INPROC-2009-86.pdf,
http://dx.doi.org/10.1007/978-3-642-04559-2_12},
contact = {Matthias.Grossmann@ipvs.uni-stuttgart.de},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme;
Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Data quality can be relevant to many applications. Especially applications
coping with sensor data cannot take a single sensor value for granted. Because
of technical and physical restrictions each sensor reading is associated with
an uncertainty. To improve quality, an application can combine data values from
different sensors or, more generally, data providers. But as different data
providers may have diverse opinions about a certain real world phenomenon,
another issue arises: inconsistency. When handling data from different data
providers, the application needs to consider their trustworthiness. This
naturally introduces a third aspect of quality: trust. In this paper we propose
a novel processing model integrating the three aspects of quality: uncertainty,
inconsistency and trust.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-86&engl=0}
}
@inproceedings {INPROC-2009-68,
author = {Sylvia Radesch{\"u}tz and Bernhard Mitschang},
title = {{Extended Analysis Techniques For a Comprehensive Business Process Optimization}},
booktitle = {Proc. of the International Conference on Knowledge Management and Information Sharing (KMIS 2009), Portugal, 6.-8. Oktober, 2009.},
publisher = {Springer},
institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
pages = {1--6},
type = {Konferenz-Beitrag},
month = {Oktober},
year = {2009},
language = {Englisch},
cr-category = {H.2.7 Database Administration,
H.2.8 Database Applications},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Efficient adaption of a company’s business and its business processes to a
changing environment is a crucial ability to survive in today’s dynamic world.
For optimizing business processes, a profound analysis of all relevant business
data in the company is necessary. We define an extended data warehouse approach
that integrates process-related data and operational business data. This
extended data warehouse is used as the underlying data source for extended OLAP
and data mining analysis techniques for a comprehensive business process
optimization.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-68&engl=0}
}
@inproceedings {INPROC-2009-60,
author = {Andreas Brodt and Christoph Stach},
title = {{Mobile ortsbasierte Browserspiele}},
booktitle = {Tagungsband der 39. GI-Jahrestagung, 28.9. - 2.10.2009, Universit{\"a}t zu L{\"u}beck},
editor = {Gesellschaft f{\"u}r Informatik e.V.},
publisher = {Gesellschaft f{\"u}r Informatik e.V. (GI)},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
series = {Lecture Notes in Informatics},
type = {Workshop-Beitrag},
month = {September},
year = {2009},
keywords = {Pervasive Games; GPS; location-based games; browser games},
language = {Deutsch},
cr-category = {H.5.1 Multimedia Information Systems,
H.5.2 Information Interfaces and Presentation User Interfaces,
K.8 Personal Computing},
ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2009-60/INPROC-2009-60.pdf},
contact = {Andreas Brodt andreas.brodt@ipvs.uni-stuttgart.de},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Die Verbreitung von mobilen Ger{\"a}ten und Positionssensoren wie GPS erm{\"o}glicht
mobile ortsbasierte Spiele, in denen sich die Spieler physisch in ihrer Umwelt
bewegen m{\"u}ssen, um Einfluss auf das Spielgeschehen zu nehmen. Klassische
Computerspiele werden zunehmend als Browserspiel realisiert, d.h. der
Web-Browser des Spielers wird f{\"u}r die Benutzerschnittstelle verwendet. Indem
der Web-Browser um eine Kontextschnittstelle erweitert wird, kann einem
Browserspiel Zugriff auf die aktuelle Position des Spielers gew{\"a}hrt werden.
Dadurch wird es m{\"o}glich, mobile ortsbasierte Spiele im Web-Browser zu spielen.
In diesem Papier besch{\"a}ftigen wir uns mit dem Eigenschaften mobiler
ortsbasierter Browserspiele. Wir stellen zwei Beispiele vor, anhand derer wir
untersuchen, welche Einfl{\"u}sse mobile ortsbasierte Spiele auf das Spielkonzept
haben und welche technischen Konsequenzen sich daraus ergeben. Abschlie{\ss}end
pr{\"a}sentieren wir ein Framework zur Entwicklung mobiler ortsbasierter Spiele.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-60&engl=0}
}
@inproceedings {INPROC-2009-53,
author = {Nazario Cipriani and Matthias Wieland and Matthias Grossmann and Daniela Nicklas},
title = {{Tool Support for the Design and Management of Spatial Context Models}},
booktitle = {Proc. of the 13th East European Conference on Advances in Databases and Information Systems (ADBIS 2009)},
address = {Riga, Lativa},
publisher = {Springer},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
type = {Konferenz-Beitrag},
month = {September},
year = {2009},
language = {Englisch},
cr-category = {H.2.4 Database Management Systems},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware;
Universit{\"a}t Stuttgart, Institut f{\"u}r Architektur von Anwendungssystemen},
abstract = {A central task in the development of context-aware applications is the modeling
and management of complex context information. In this paper, we present the
NexusEditor, which eases this task by providing a graphical user interface to
design schemas for spatial context models, interactively create queries, send
them to a server and visualize the results. One main contribution is to show
how schema awareness can improve such a tool: the NexusEditor dynamically
parses the underlying data model and provides additional syntactic checks,
semantic checks, and short-cuts based on the schema information. Furthermore,
the tool helps to design new schema definitions based on the existing ones,
which is crucial for an iterative and user-centric development of context-aware
applications. Finally, it provides interfaces to existing information spaces
and visualization tools for spatial data like GoogleEarth.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-53&engl=0}
}
@inproceedings {INPROC-2009-47,
author = {Andreas Brodt and Sailesh Sathish},
title = {{Together we are strong -- Towards ad-hoc smart spaces}},
booktitle = {Proceedings of the 7th Annual IEEE International Conference on Pervasive Computing and Communications (PerCom '09). Galveston, TX, USA. March 2009},
publisher = {IEEE Computer Society},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
pages = {1--4},
type = {Konferenz-Beitrag},
month = {Januar},
year = {2009},
keywords = {ad-hoc; smart space; mobile},
language = {Englisch},
cr-category = {H.2.8 Database Applications,
H.3.4 Information Storage and Retrieval Systems and Software,
H.3.5 Online Information Services},
ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2009-47/INPROC-2009-47.pdf,
http://www.nexus.uni-stuttgart.de/},
contact = {andreas.brodt@ipvs.uni-stuttgart.de},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Today's mobile devices feature many resources, sensors and data, which make it
possible for them to adapt to their environment. However, they would have a lot
more resources at hand, and thus could better adapt to their context, if they
used their communication capabilities to share their resources with others near
them. In this paper we propose the concept of ad-hoc smart spaces, which
enables mobile devices to utilize resources owned by other devices in physical
proximity. This imposes a number of challenges as cooperation partners can join
and leave any time and as devices are highly heterogeneous. We propose a system
architecture for ad-hoc smart spaces and present a prototypic implementation.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-47&engl=0}
}
@inproceedings {INPROC-2009-46,
author = {Eva Fenrich and Andreas Brodt and Daniela Nicklas},
title = {{WODCA: A MOBILE, WEB-BASED FIELD SAMPLING SUPPORT SYSTEM}},
booktitle = {Proceedings of the 8th international conference on Hydroinformatics, HEIC 2009},
publisher = {International Water Association},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
pages = {1--10},
type = {Konferenz-Beitrag},
month = {Januar},
year = {2009},
keywords = {GPS, DCCI, Field sampling,},
language = {Englisch},
cr-category = {H.3.5 Online Information Services},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Efficient data acquisition methods can save time and money in field
measurements. As most field data in aquatic systems is time dependent, it is
important to minimize sampling errors as measurements for a certain time and
place cannot be re-taken. For larger measurement campaigns with different teams
at distributed sampling sites, information about data from other teams as well
as environmental data like gauge, tidal or upstream weather information could
help to interpret measurement results already on site. We propose WODCA (Water
Observation Data Collecting Application), a mobile, online measurement support
system. The measurements are sent wirelessly to a geographic database that
provides back an integrated view on already taken measurements of all mobile
parties, augmented with online environmental data like gauge data or tidal
information. This eases the collaboration between different mobile measurement
teams. GPS integration and map based data input can help to avoid location
errors. The proposed system could assist materially in the improvement of field
data quality and sampling comfort.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-46&engl=0}
}
@inproceedings {INPROC-2009-45,
author = {Andreas Brodt and Nazario Cipriani},
title = {{NexusWeb - eine kontextbasierte Webanwendung im World Wide Space}},
booktitle = {Datenbanksysteme in Business, Technologie und Web (BTW 2009), 13. Fachtagung des GI-Fachbereichs ``Datenbanken und Informationssysteme'' (DBIS), Proceedings, 2.-6. M{\"a}rz 2009, M{\"u}nster, Germany},
editor = {GI},
publisher = {GI},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
series = {Lecture Notes in Informatics},
volume = {144},
pages = {588--591},
type = {Konferenz-Beitrag},
month = {M{\"a}rz},
year = {2009},
isbn = {978-3-88579-238-3},
keywords = {DCCI, location-based services, Nokia N810, Internet Tablet, GPS, Google Maps, Nexus, AWQL, AWML},
language = {Deutsch},
cr-category = {H.3.5 Online Information Services},
ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2009-45/INPROC-2009-45.pdf},
contact = {Andreas Brodt andreas.brodt@ipvs.uni-stuttgart.de},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Wir pr{\"a}sentieren NexusWeb, eine kontextbasierte Webanwendung, die ein
Umgebungsmodell des Benutzers zeichnet. NexusWeb bezieht dazu Kontextdaten des
World Wide Space, einer F{\"o}deration verschiedenster Datenanbieter. Die
GPS-Position des Benutzers gelangt {\"u}ber eine standardisierte
Browsererweiterung in die Webanwendung und steuert die Ansicht von NexusWeb.
Wir zeigen verschiedene Szenarien sowohl auf einem mobilen Ger{\"a}t als auch auf
einem gew{\"o}hnlichen Laptop.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-45&engl=0}
}
@inproceedings {INPROC-2009-29,
author = {Fabian Kaiser and Holger Schwarz and Mih{\'a}ly Jakob},
title = {{Using Wikipedia-based conceptual contexts to calculate document similarity}},
booktitle = {ICDS2009: Proceedings of the 3rd International Conference on Digital Society},
address = {Cancun, Mexico},
publisher = {IEEE Computer Society},
institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
pages = {322--327},
type = {Konferenz-Beitrag},
month = {Februar},
year = {2009},
language = {Englisch},
cr-category = {H.3 Information Storage and Retrieval,
H.3.3 Information Search and Retrieval},
ee = {http://dx.doi.org/10.1109/ICDS.2009.7},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Rating the similarity of two or more text documents is an essential task in
information retrieval. For example, document similarity can be used to rank
search engine results, cluster documents according to topics etc. A major
challenge in calculating document similarity originates from the fact that two
documents can have the same topic or even mean the same, while they use
different wording to describe the content. A sophisticated algorithm therefore
will not directly operate on the texts but will have to find a more abstract
representation that captures the texts' meaning. In this paper, we propose a
novel approach for calculating the similarity of text documents. It builds on
conceptual contexts that are derived from content and structure of the
Wikipedia hypertext corpus.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-29&engl=0}
}
@inproceedings {INPROC-2009-130,
author = {Jorge Minguez and Mihaly Jakob and Uwe Heinkel and Bernhard Mitschang},
title = {{A SOA-based approach for the integration of a data propagation system}},
booktitle = {IRI'09: Proceedings of the 10th IEEE international conference on Information Reuse \& Integration},
publisher = {IEEE Press},
institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
pages = {47--52},
type = {Konferenz-Beitrag},
month = {August},
year = {2009},
isbn = {978-1-4244-4114-3},
language = {Deutsch},
cr-category = {D.2.11 Software Engineering Software Architectures,
D.2.13 Software Engineering Reusable Software},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Major challenges that companies face nowadays are extremely volatile markets, a
globally distributed supplier network and constantly changing business
environments. These circumstances demand a high level of agility and
extraordinary flexibility in the business modeling and the organizational
structures of a company as well as adaptive and interoperable IT systems. In
order to meet these requirements an integration of systems needs to be
achieved.
A possible solution for this problem is Champagne, which is a data propagation
system that ensures the interoperability of enterprise applications at the data
level. However, Champagne provides a tightly-coupled integration of
applications and its architecture lacks the needed flexibility to link business
processes.
These deficiencies can be overcome with the adoption of a service-oriented
architecture (SOA), based on loosely-coupled services, which enable a higher
level of flexibility and interoperability. Therefore, we explore in this paper
a number of options to reuse and integrate Champagne into a service-oriented
architecture in order to benefit from SOA principles.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-130&engl=0}
}
@inproceedings {INPROC-2009-126,
author = {Jorge M$\backslash$'$\backslash$inguez and Mih$\backslash$'aly Jakob and Uwe Heinkel and Bernhard Mitschang},
title = {{A SOA-based approach for the integration of a data propagation system}},
booktitle = {IRI'09: Proceedings of the 10th IEEE international conference on Information Reuse \& Integration},
publisher = {IEEE Press},
institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
pages = {47--52},
type = {Konferenz-Beitrag},
month = {August},
year = {2009},
isbn = {978-1-4244-4114-3},
language = {Englisch},
cr-category = {D.2.11 Software Engineering Software Architectures,
D.2.13 Software Engineering Reusable Software},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Major challenges that companies face nowadays are extremely volatile markets, a
globally distributed supplier network and constantly changing business
environments. These circumstances demand a high level of agility and
extraordinary flexibility in the business modeling and the organizational
structures of a company as well as adaptive and interoperable IT systems. In
order to meet these requirements an integration of systems needs to be
achieved.
A possible solution for this problem is Champagne, which is a data propagation
system that ensures the interoperability of enterprise applications at the data
level. However, Champagne provides a tightly-coupled integration of
applications and its architecture lacks the needed flexibility to link business
processes.
These deficiencies can be overcome with the adoption of a service-oriented
architecture (SOA), based on loosely-coupled services, which enable a higher
level of flexibility and interoperability. Therefore, we explore in this paper
a number of options to reuse and integrate Champagne into a service-oriented
architecture in order to benefit from SOA principles.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-126&engl=0}
}
@inproceedings {INPROC-2009-125,
author = {Jorge M$\backslash$'$\backslash$inguez and Mih$\backslash$'aly Jakob and Uwe Heinkel and Bernhard Mitschang},
title = {{A SOA-based approach for the integration of a data propagation system}},
booktitle = {IRI'09: Proceedings of the 10th IEEE international conference on Information Reuse \& Integration},
publisher = {IEEE Press},
institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
pages = {47--52},
type = {Konferenz-Beitrag},
month = {August},
year = {2009},
isbn = {978-1-4244-4114-3},
language = {Englisch},
cr-category = {D.2.11 Software Engineering Software Architectures,
D.2.13 Software Engineering Reusable Software},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Major challenges that companies face nowadays are extremely volatile markets, a
globally distributed supplier network and constantly changing business
environments. These circumstances demand a high level of agility and
extraordinary flexibility in the business modeling and the organizational
structures of a company as well as adaptive and interoperable IT systems. In
order to meet these requirements an integration of systems needs to be
achieved.
A possible solution for this problem is Champagne, which is a data propagation
system that ensures the interoperability of enterprise applications at the data
level. However, Champagne provides a tightly-coupled integration of
applications and its architecture lacks the needed flexibility to link business
processes.
These deficiencies can be overcome with the adoption of a service-oriented
architecture (SOA), based on loosely-coupled services, which enable a higher
level of flexibility and interoperability. Therefore, we explore in this paper
a number of options to reuse and integrate Champagne into a service-oriented
architecture in order to benefit from SOA principles.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-125&engl=0}
}
@inproceedings {INPROC-2009-120,
author = {Nicola H{\"o}nle and Matthias Gro{\ss}mann and Dominik Lucke and Engelbert Westk{\"a}mper},
title = {{Historisierung und Analyse von Stromdaten in einem Data Warehouse am Beispiel der Smart Factory}},
booktitle = {Beitr{\"a}ge der 39. Jahrestagung der Gesellschaft f{\"u}r Informatik e.V. (GI)},
editor = {Stefan Fischer and Erik Maehle and R{\"u}diger Reischuk},
address = {Bonn},
publisher = {Gesellschaft f{\"u}r Informatik e.V. (GI)},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
series = {Lecture Notes in Informatics},
volume = {P-154},
pages = {246--246},
type = {Workshop-Beitrag},
month = {September},
year = {2009},
isbn = {978-3-88579-248-2},
language = {Deutsch},
cr-category = {H.2.8 Database Applications,
J.7 Computers in Other Systems},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Industrielle Fertigung und Fabrikbetrieb (IFF);
Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Die heute geforderte schnelle Anpassung von Fabriken an sich st{\"a}ndig {\"a}ndernde
Herausforderungen des Marktes erfordert aktuelle und korrekte Informationen
{\"u}ber den Zustand der Fabrik. Dabei fallen Stromdaten unterschiedlicher Herkunft
an (z.B. Betriebsdaten aus Maschinen oder Sensormesswerte, verkn{\"u}pft mit
virtuellen Informationen wie z.B. Workflows), zu deren Erfassung und
Integration ein System zum Stromdatenmanagement ben{\"o}tigt wird. Dazu setzen wir
ein spezielles Datenstromverarbeitungssystem ein.
Im Teilprojekt „Smart Factory“ des Sonderforschungsbereichs 627 Nexus werden
Anwendungen f{\"u}r die Produktion erforscht, die eine kontextbezogene
Unterst{\"u}t-zung von Mitarbeitern und Maschinen erm{\"o}glichen.
Die anfallenden Daten in der Smart Factory sowohl von Sensoren als auch von
Leitrechnern und Maschinen k{\"o}nnen nicht nur zur Unterst{\"u}tzung aktueller
Aufgaben verwendet werden, sondern aus der Analyse der Datenhistorien lassen
sich auch wertvolle Erkenntnisse gewinnen, die wiederum r{\"u}ckwirkend den
Alltagsbetrieb in der Fabrik verbessern k{\"o}nnen.
In diesem Artikel stellen wir den Entwurf eines Data Warehouses vor, das zur
Speicherung und Analyse von Datenhistorien aus der Smart Factory entworfen
wurde, und wir skizzieren, wie mit Hilfe des verwendeten
Datenstromverarbeitungssystems das kontinuierliche Laden der Daten realisiert
werden kann.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-120&engl=0}
}
@inproceedings {INPROC-2009-119,
author = {Nazario Cipriani and Carlos L{\"u}bbe},
title = {{Ausnutzung von Restriktionen zur Verbesserung des Deployment-Vorgangs des Verteilten Datenstromverarbeitungssystems NexusDS}},
booktitle = {Beitr{\"a}ge der 39. Jahrestagung der Gesellschaft f{\"u}r Informatik e.V. (GI)},
editor = {Stefan Fischer and Erik Maehle and R{\"u}diger Reischug},
address = {Bonn},
publisher = {Gesellschaft f{\"u}r Informatik e.V. (GI)},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
series = {Lecture Notes in Informatics},
volume = {P-154},
pages = {240--240},
type = {Workshop-Beitrag},
month = {September},
year = {2009},
isbn = {978-3-88579-248-2},
keywords = {Data Stream Processing; Stream Databases; Middleware Platforms for Data Management; P2P and Networked Data Management; Database Services and Applications},
language = {Deutsch},
cr-category = {C.2 Computer-Communication Networks,
H.2 Database Management},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Kontextsensitive Informationssysteme verarbeiten h{\"a}ufig Daten der n{\"a}heren
Umgebung, die mit Hilfe von Sensoren kontinuierlich erhoben werden. F{\"u}r die
Verarbeitung kontinuierlicher Datenstr{\"o}me k{\"o}nnen Datenstromverarbeitungssysteme
eingesetzt werden. Jedoch m{\"u}ssen diese im Bereich der Kontextdatenverarbeitung
mit einem heterogenen Umfeld zurechtkommen. Je nach technischer Ausstattung der
physischen Umgebung sollten sie sich an die dort geltenden Bedingungen bzw.
Restriktionen anpassen. F{\"u}r verteilte Datenstromverarbeitungssysteme ist die
Anfrageverteilung in einem solchen Umfeld eine besondere Herausforderung, denn
das System muss Restriktionen auf verschiedenen Ebenen ber{\"u}cksichtigen. So
k{\"o}nnte ein Teil der Anfrage gewisse Anforderungen an seine Ausf{\"u}hrungsumgebung
haben, wie spezialisierte Hardware, oder es k{\"o}nnte aus Sicherheitsgr{\"u}nden
notwendig sein, die Anfrage oder einen Anfrageteil in einer sicheren
Ausf{\"u}hrungsumgebung auszuf{\"u}hren.
In diesem Papier klassifizieren wir Restriktionen, die auf verschiedenen Ebenen
der Anfrageverarbeitung des Systems vorkommen k{\"o}nnen. {\"U}berdies stellen wir ein
Konzept zur Modellierung der Restriktionsklassen vor und zeigen wie diese in
der Anfrageverarbeitung des verteilten Datenstromverarbeitungssystems NexusDS
ber{\"u}cksichtigt werden.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-119&engl=0}
}
@inproceedings {INPROC-2009-07,
author = {Ralph Lange and Nazario Cipriani and Lars Geiger and Matthias Gro{\ss}mann and Harald Weinschrott and Andreas Brodt and Matthias Wieland and Stamatia Rizou and Kurt Rothermel},
title = {{Making the World Wide Space Happen: New Challenges for the Nexus Context Platform}},
booktitle = {Proceedings of the 7th Annual IEEE International Conference on Pervasive Computing and Communications (PerCom '09). Galveston, TX, USA. March 2009},
publisher = {IEEE Computer Society},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
pages = {1--4},
type = {Konferenz-Beitrag},
month = {M{\"a}rz},
year = {2009},
keywords = {Nexus; context; mobile context-aware applications; context-awareness; context management; World Wide Space; stream-processing; situation recognition; reasoning; workflows; quality of context},
language = {Englisch},
cr-category = {H.2.8 Database Applications,
H.3.4 Information Storage and Retrieval Systems and Software,
H.3.5 Online Information Services},
ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2009-07/INPROC-2009-07.pdf,
http://www.nexus.uni-stuttgart.de/,
http://dx.doi.org/10.1109/PERCOM.2009.4912782},
contact = {ralph.lange@ipvs.uni-stuttgart.de},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme;
Universit{\"a}t Stuttgart, Institut f{\"u}r Architektur von Anwendungssystemen;
Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Context-aware applications rely on models of the physical world. Within the
Nexus project, we envision a World Wide Space which provides the conceptual and
technological framework for integrating and sharing such context models in an
open, global platform of context providers. In our ongoing research we tackle
important challenges in such a platform including distributed processing of
streamed context data, situation recognition by distributed reasoning,
efficient management of context data histories, and quality of context
information. In this paper we discuss our approach to cope with these
challenges and present an extended Nexus architecture.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2009-07&engl=0}
}
@article {ART-2009-30,
author = {Nicola H{\"o}nle and Matthias Grossmann and Daniela Nicklas and Bernhard Mitschang},
title = {{Design and implementation of a domain-aware data model for pervasive context information}},
journal = {Computer Science Research + Development},
publisher = {Springer},
volume = {24},
number = {1-2},
pages = {69--83},
type = {Artikel in Zeitschrift},
month = {September},
year = {2009},
language = {Englisch},
cr-category = {H.2.1 Database Management Logical Design,
H.2.8 Database Applications},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {We introduce a data model for a context-management middleware that enables
context-aware and pervasive computing applications to transparently access
available data providers and that effectively combines their data. Our approach
supports new data fusion concepts for overlapping and heterogeneous data sets
and thus maximizes the information presented to the application. The main part
of our data model is a flexible concept for meta data that is able to represent
important aspects like quality, data derivation, or temporal characteristics of
data. Attributes having multiple values are utilized to represent sensor
measurements histories like locations of mobile objects at different points in
time. In our paper, we characterize the requirements for our data model and
show that existing data models, including the (object-) relational data model
and standard XML data models, do not offer the required flexibility. Therefore
basic XML technology is extended to support the necessary meta data concept and
multiply typed objects.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2009-30&engl=0}
}
@article {ART-2009-09,
author = {Jing Lu and Bernhard Mitschang},
title = {{Enforcing Data Consistency in Data Integration Systems by XQuery Trigger Service}},
journal = {International Journal of Web Information Systems},
publisher = {Emerald Group Publishing Limited},
volume = {5},
number = {2},
pages = {1--19},
type = {Artikel in Zeitschrift},
month = {Mai},
year = {2009},
language = {Englisch},
cr-category = {E.0 Data General},
contact = {jinglu76@gmail.com},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Nowadays XML-based data integration systems are accepted as data service
providers on the web. In order to make such a data integration system fully
equipped with data manipulation capabilities, programming frameworks which
support update at the integration level are being developed. When the user is
permitted to submit updates, it is necessary to establish the best possible
data consistency for the whole data integration system. To that extend, we
present an approach based on an XQuery trigger service. We define an XQuery
trigger model together with its semantics. We report on the integration of the
XQuery trigger service into the overall architecture and discuss details of the
execution model. Experiments show that our approach provides an easy, efficient
and convenient way to achieve data consistency at the global level.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2009-09&engl=0}
}
@article {ART-2009-08,
author = {Nazario Cipriani and Daniela Nicklas and Matthias Gro{\ss}mann and Nicola H{\"o}nle and Carlos L{\"u}bbe and Bernhard Mitschang},
title = {{Verteilte Datenstromverarbeitung von Sensordaten}},
journal = {Datenbank-Spektrum},
publisher = {dpunkt Verlag},
volume = {9},
number = {28},
pages = {37--43},
type = {Artikel in Zeitschrift},
month = {Februar},
year = {2009},
language = {Deutsch},
cr-category = {H.2.4 Database Management Systems,
H.2.8 Database Applications,
E.4 Data Coding and Information Theory},
contact = {nazario.cipriani@ipvs.uni-stuttgart.de},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Technologischer Fortschritt im Bereich der Mikroelektronik und
Kommunikationstechnik f{\"u}hren zunehmend zu einem stark vernetzten, mit Sensoren
ausgestatteten Umfeld. Die Herausforderung, die in diesem Zusammenhang
auftretenden kontinuierlichen Datenstr{\"o}me zu verwalten und effizient zu
verarbeiten, sowie heterogene Sensorger{\"a}te und Netztopologien zu integrieren,
ist f{\"u}r viele Anwendungsentwickler eine zu gro{\ss}e H{\"u}rde. In dieser Arbeit wird
eine Middleware vorgestellt, die es einer Anwendung erm{\"o}glicht, anfragebasiert
die Verarbeitung von kontinuierlichen Datenstr{\"o}men zu steuern. Die zur
Verarbeitung der Daten ben{\"o}tigten Operatoren werden virtualisiert ausgef{\"u}hrt,
um die gr{\"o}{\ss}tm{\"o}gliche Flexibilit{\"a}t bei der Verteilung auf die beteiligten
physischen Knoten zu erreichen. Weiterhin werden Ans{\"a}tze zur Komprimierung von
Datenstr{\"o}men vorgestellt, um das Gesamtvolumen der ausgetauschten Daten
zwischen den Knoten zu reduzieren.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2009-08&engl=0}
}
@article {ART-2009-03,
author = {Daniela Nicklas and Matthias Grossmann and Matthias Wieland},
title = {{Context Modeling for Mobile, Adaptive Applications}},
journal = {it - Information Technology},
publisher = {Oldenbourg Wissenschaftsverlag GmbH},
volume = {51},
number = {2},
pages = {85--92},
type = {Artikel in Zeitschrift},
month = {M{\"a}rz},
year = {2009},
doi = {10.1524/itit.2009.0527},
keywords = {ubiquitous Computing; pervasive Computing; context modeling; mobile applications; Content Analysis and indexing},
language = {Englisch},
cr-category = {H.2.4 Database Management Systems,
H.2.8 Database Applications,
H.3 Information Storage and Retrieval},
ee = {http://www.atypon-link.com/OLD/toc/itit/51/2,
http://www.atypon-link.com/OLD/doi/pdf/10.1524/itit.2009.0527},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Architektur von Anwendungssystemen;
Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Abstract
Context-aware applications adapt their behavior according to the current
situation. In this paper we present a layered model to separate different tasks
and concerns in designing data models for context-aware applications. The
layers are discussed along the Nexus approach, which is designed to support
large-scale, mobile applications by federated context models. Furthermore,
related approaches are described and compared.
Zusammenfassung
Kontextbezogene Anwendungen adaptieren ihr Verhalten aufgrund von Situationen.
Dieser Beitrag pr{\"a}sentiert ein Ebenenmodell f{\"u}r Datenmodelle solcher
Anwendungen, das verschiedene Probleme und Aufgaben im Entwurf der Daten, der
Adaptionslogik und der Verarbeitung kapselt. Die Ebenen werden anhand des
Nexus-Ansatzes diskutiert, dessen Ziel es ist, mobile, kontext-bezogene
Anwendungen durch f{\"o}derierte Kontextmodelle zu unterst{\"u}tzen, und mit verwandten
Arbeiten verglichen.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2009-03&engl=0}
}
@inbook {INBOOK-2009-04,
author = {Rodrigo Salvador Monteiro and Geraldo Zimbr{\~a}o and Jano Moreira de Souza and Holger Schwarz and Bernhard Mitschang},
title = {{Exploring Calendar-based Pattern Mining in Data Streams}},
series = {Complex Data Warehousing and Knowledge Discovery for Advanced Retrieval Development: Innovative Methods and Applications},
publisher = {IGI Global},
pages = {1--30},
type = {Beitrag in Buch},
month = {Juni},
year = {2009},
isbn = {978-1-60566-748-5},
language = {Englisch},
cr-category = {H.2.8 Database Applications},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {Finally, Chapter XVI introduces a calendar-based pattern mining that aims at
identifying patterns on specific calendar partitions in continuous data
streams. The authors present how a data warehouse approach can be applied to
leverage calendar-based pattern mining in data streams and how the framework of
the DWFIST approach can cope with tight time constraints imposed by data
streams, keep storage requirements at a manageable level and, at the same time,
support calendar-based frequent itemset mining. The minimum granularity of
analysis, parameters of the data warehouse (e.g. mining minimum support) and
parameters of the database (e.g. extent size) provide ways to tune the load
performance.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INBOOK-2009-04&engl=0}
}
@inbook {INBOOK-2009-01,
author = {Cataldo Mega and Kathleen Krebs and Frank Wagner and Norbert Ritter and Bernhard Mitschang},
title = {{Content-Management-Systeme der n{\"a}chsten Generation}},
series = {Wissens- und Informationsmanagement ; Strategien, Organisation und Prozesse},
address = {Wiesbaden},
publisher = {Gabler Verlag},
pages = {539--567},
type = {Beitrag in Buch},
month = {Januar},
year = {2009},
isbn = {978-3-8349-0937-4},
language = {Deutsch},
cr-category = {H.3.2 Information Storage},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
abstract = {...},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INBOOK-2009-01&engl=0}
}
@proceedings {PROC-2009-02,
editor = {Kurt Rothermel and Dieter Fritsch and Wolfgang Blochinger and Frank D{\"u}rr},
title = {{Quality of Context -- Proceedings of the First International Workshop on Quality of Context (QuaCon 2009)}},
address = {Stuttgart, Germany},
publisher = {Springer},
institution = {Universit{\"a}t Stuttgart : Sonderforschungsbereich SFB 627 (Nexus: Umgebungsmodelle f{\"u}r mobile kontextbezogene Systeme), Germany},
series = {Lecture Notes in Computer Science},
volume = {5786},
pages = {184},
type = {Tagungsband},
month = {Juni},
year = {2009},
isbn = {978-3-642-04558-5},
keywords = {context-aware systems; location-based services; quality; context},
language = {Englisch},
cr-category = {H.2.8 Database Applications,
H.3.3 Information Search and Retrieval,
H.3.5 Online Information Services},
department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware;
Universit{\"a}t Stuttgart, Institut f{\"u}r Photogrammetrie (ifp);
Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Verteilte Systeme;
Universit{\"a}t Stuttgart, Institut f{\"u}r Maschinelle Sprachverarbeitung},
abstract = {Advances in sensor technology, wireless communication, and mobile devices lead
to the proliferation of sensors in our physical environment. At the same time
detailed digital models of buildings, towns, or even the globe become widely
available. Integrating the huge amount of sensor data into spatial models
results in highly dynamic models of the real world, often called context
models.
A wide range of applications can substantially benefit from context models.
However, context data are inherently associated with uncertainty. In general,
quality of context information has to be taken into account by both context
management and applications. For example, the accuracy, completeness, and
trustworthiness of spatial context information such as street or building data
are very important for navigation and guidance systems.
QuaCon 2009 was the first international scientific meeting that specifically
focused on the different aspects of quality of context data. Research in
context management and, in particular, context quality, requires an
interdisciplinary approach. Therefore, the QuaCon workshop aimed to bring
together researchers from various fields to discuss approaches to context
quality and to make a consolidated contribution toward an integrated way of
treating this topic. We received 19 high-quality paper submissions by
researchers from Europe, USA, and Asia. The International Program Committee
selected 11 papers for presentation at the workshop. Additionally, five invited
contributions by internationally renowned experts in the field were included in
the workshop program. The presentations at the workshop showed many facets of
quality of context from different research fields including context data
management, spatial models, context reasoning, privacy, and system frameworks.
The lively discussions underlined the great interest in this topic and in
particular led to a deeper understanding of the relations between the various
aspects of quality of context.
The success of QuaCon 2009 was the result of a team effort. We are grateful to
the members of the Program Committee and the external reviewers for their
thorough and timely reviews as well as to the authors for their high-quality
submissions and interesting talks. We would like to extend special thanks to
our invited speakers for their excellent and inspiring keynotes. Finally, we
wish to thank all persons involved in the organization of the QuaCon 2009
workshop who did really a great job.},
url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=PROC-2009-02&engl=0}
}
