@inproceedings {INPROC-2006-57,
   author = {Christoph Mangold and Holger Schwarz},
   title = {{Documents meet Databases: A System for Intranet Search}},
   booktitle = {13th International Conference on Management of Data (COMAD 2006), Delhi, India, December 14-16, 2006},
   editor = {L. V. S. Lakshmanan and P. Roy and A. K. H. Tung},
   address = {New Delhi},
   publisher = {Tata McGraw-Hill Publishing Company Limited},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {227--230},
   type = {Konferenz-Beitrag},
   month = {Dezember},
   year = {2006},
   isbn = {0-07-063374-6},
   language = {Englisch},
   cr-category = {H.3.3 Information Search and Retrieval},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2006-57/INPROC-2006-57.pdf},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {In enterprise intranets, information is encoded in documents and databases. Logically, the information in both worlds is tightly connected, however, on the system level there is usually a large gap. In this paper, we propose a system to retrieve documents in the enterprise intranet. The system is an extension to common text search. It does not only consider the content of documents but also it exploits the enterprise databases to determine the documents' context.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2006-57&engl=0}
}
@inproceedings {INPROC-2006-56,
   author = {Christoph Mangold and Holger Schwarz and Bernhard Mitschang},
   title = {{Symbiosis in the Intranet: How Document Retrieval Benefits from Database Information}},
   booktitle = {13th International Conference on Management of Data (COMAD 2006), December 14-16, 2006, Delhi, India},
   editor = {L. V. S. Lakshmanan and P. Roy and A. K. H. Tung},
   address = {New Delhi},
   publisher = {Tata McGraw-Hill Publishing Company Limited},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {201--204},
   type = {Konferenz-Beitrag},
   month = {Dezember},
   year = {2006},
   isbn = {0-07-063374-6},
   language = {Englisch},
   cr-category = {H.3.3 Information Search and Retrieval},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2006-56/INPROC-2006-56.pdf},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {The enterprise information space is split in two hemispheres. Documents contain unstructured or semistructured information; structured information is stored in databases. As regards the content, both kinds of information are complementary parts. However, enterprise information systems usually focus on one part, only. Our approach improves document retrieval in the intranet by exploiting the enterprise's databases. In particular, we exploit database information to describe the context of documents and exploit this context to enhance common full text search. In this paper, we show how to model and compute document context and present results on runtime performance},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2006-56&engl=0}
}
@inproceedings {INPROC-2006-52,
   author = {Christoph Mangold and Holger Schwarz and Bernhard Mitschang},
   title = {{u38: A Framework for Database-Supported Enterprise Document-Retrieval}},
   booktitle = {Proceedings of the Tenth International Database Engineering \& Apllications Symposium (IDEAS2006), Delhi, India, December 11-14, 2006},
   publisher = {IEEE Computer Society},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {1--8},
   type = {Konferenz-Beitrag},
   month = {Dezember},
   year = {2006},
   language = {Englisch},
   cr-category = {H.3.3 Information Search and Retrieval},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {In enterprises, information is encoded in documents and databases. Logically, the information in both worlds is tightly connected, however, on the system level there is usu- ally a large gap. In this paper, we propose a framework that improves document retrieval by exploiting available enter- prise databases. In particular, we use database information to model the context of documents and incorporate this con- text in our search framework. We present our framework architecture, its components and its major interfaces. The framework can be configured and enhanced at well-defined points and, hence, can easily be customized to other do- mains. We furthermore evaluate its core components. Our experiments show that the context-aware approach signifi- cantly improves the quality of search results.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2006-52&engl=0}
}
@inproceedings {INPROC-2006-32,
   author = {Ralf Rantzau and Christoph Mangold},
   title = {{Laws for Rewriting Queries Containing Division Operators}},
   booktitle = {Proceedings of the 22nd International Conference on Data Engineering, ICDE 2006},
   editor = {Ling Liu and Andreas Reuter and Kyu-Young Whang and Jianjun Zhang},
   publisher = {IEEE Computer Society},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {21--21},
   type = {Konferenz-Beitrag},
   month = {April},
   year = {2006},
   language = {Englisch},
   cr-category = {F.4.1 Mathematical Logic,     H.2.3 Database Management Languages},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2006-32/INPROC-2006-32.pdf},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {Relational division, also known as small divide, is a derived operator of the relational algebra that realizes a many-to-one set containment test, where a set is represented as a group of tuples: Small divide discovers which sets in a dividend relation contain all elements of the set stored in a divisor relation. The great divide operator extends small divide by realizing many-to-many set containment tests. It is also similar to the set containment join operator for schemas that are not in first normal form. Neither small nor great divide has been implemented in commercial relational database systems although the operators solve important problems and many efficient algorithms for them exist. We present algebraic laws that allow rewriting expressions containing small or great divide, illustrate their importance for query optimization, and discuss the use of great divide for frequent itemset discovery, an important data mining primitive. A recent theoretic result shows that small divide must be implemented by special purpose algorithms and not be simulated by pure relational algebra expressions to achieve efficiency. Consequently, an efficient implementation requires that the optimizer treats small divide as a first-class operator and possesses powerful algebraic laws for query rewriting.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2006-32&engl=0}
}
@inproceedings {INPROC-2005-57,
   author = {Christoph Mangold and Holger Schwarz and Bernhard Mitschang},
   title = {{Improving Intranet Search Engines Using Context Information from Databases}},
   booktitle = {Proceedings of the 14th ACM International Conference on Information and Knowledge Management (CIKM 2005), Bremen, Germany, October 31 - November 5, 2005},
   editor = {A. Chowdhury and N. Fuhr and M. Ronthaler and H.-J. Schek and W. Teiken},
   publisher = {ACM Press},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {349--350},
   type = {Konferenz-Beitrag},
   month = {Oktober},
   year = {2005},
   isbn = {1-59593-140-6},
   language = {Englisch},
   cr-category = {H.3.3 Information Search and Retrieval},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/INPROC-2005-57/INPROC-2005-57.pdf},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {Information in enterprises comes in documents and databases. From a semantic viewpoint, both kinds of information are usually tightly connected. In this paper, we propose to enhance common search-engines with contextual information retrieved from databases. We establish system requirements and anecdotally demonstrate how documents and database information can be represented as the nodes of a graph. Then, we give an example how we exploit this graph information for document retrieval.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2005-57&engl=0}
}
@inproceedings {INPROC-2005-32,
   author = {Stefan Berger and Christoph Mangold and Sebastian Meyer and Engelbert Westk{\"a}mper},
   title = {{Knowledge Management in Assembly}},
   booktitle = {Proceedings of the 38th CIRP international seminar on manufacturing systems},
   publisher = {CIRP},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   type = {Konferenz-Beitrag},
   month = {Mai},
   year = {2005},
   language = {Englisch},
   cr-category = {H.3.3 Information Search and Retrieval},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {Turbulent business environments force enterprises to ever faster answers and adaptations in order to secure their competitive ability. Especially mass customization can be seen as one driver for variable and even smaller number of pieces till lot size 1. Its impacts can be clearly noticed e.g. in assembly where today changeover and set up processes define the daily business. In combination with ever more complex products and the operation of facilities in technological threshold the (re-)use of workers knowledge and experience get a key factor for mutability and responsibility. The article will show starting points for the handling of knowledge in assembly which have been researched within the SFB467-project 'Knowledge based management for the versatile assembly' at the University of Stuttgart.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2005-32&engl=0}
}
@inproceedings {INPROC-2003-40,
   author = {Christoph Mangold and Bernhard Mitschang},
   title = {{Enabling a Reuse Oriented Engineering Methodology}},
   booktitle = {Proceedings of the Second IASTED International Conference on Information and Knowledge Sharing},
   editor = {Wesley Chu},
   address = {Anaheim, Calgary, Zurich},
   publisher = {ACTA Press},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Elektrotechnik und Informationstechnik, Germany},
   pages = {6--11},
   type = {Konferenz-Beitrag},
   month = {November},
   year = {2003},
   isbn = {0-88986-396-2},
   keywords = {Engineering Methodology; Reuse; Representation; Knowledge Engineering and Management},
   language = {Englisch},
   cr-category = {H.1.1 Systems and Information Theory,     H.1.2 User/Machine Systems},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {In the domain of machine engineering the reuse of design data is an important but complex instrument to improve quality and shorten development time. The successful reuse of design data requires both, a machine engineering specific methodology and the support by appropriate information system technology. In this paper we introduce a machine engineering methodology that is based on several reuse stages. Our approach to support the methodology with an appropriate information system uses a simple graph based information model where reuse stages are re- flected as layers. We also show how reuse is represented in the model.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-40&engl=0}
}
@inproceedings {INPROC-2003-01,
   author = {Christoph Mangold and Ralf Rantzau and Bernhard Mitschang},
   title = {{F{\"o}deral: Management of Engineering Data Using a Semistructured Data Model}},
   booktitle = {Proceedings of the International Conference on Enterprise Information Systems (ICEIS), Angers, France, April 2003},
   publisher = {Unknown},
   institution = {Universit{\"a}t Stuttgart, Fakult{\"a}t Informatik, Germany},
   type = {Konferenz-Beitrag},
   month = {April},
   year = {2003},
   isbn = {972-98816-1-8},
   keywords = {product data management, semistructured data, integration, data modeling},
   language = {Englisch},
   cr-category = {H.2 Database Management},
   contact = {christoph.mangold@informatik.uni-stuttgart.de},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte H{\"o}chstleistungsrechner, Anwendersoftware},
   abstract = {The F{\"o}deral system is a flexible repository for the management, integration and modeling of product data. Current systems in this domain employ object-oriented data models. Whereas this is adequate for the management of product data, it proves insufficient for integration and modeling. Present semistructured data models, however, are suited ideally for integration, but data management and also modeling is a problem. In this paper we describe our approach to narrow down the gap between structured and semistructured data models. We present the F{\"o}deral information system which employs a new semistructured data model and show how this model can be employed in the context of management, integration, and modeling of engineering data.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=INPROC-2003-01&engl=0}
}
@article {ART-2007-09,
   author = {Christoph Mangold},
   title = {{A survey and classification of semantic search approaches}},
   journal = {International Journal of Metadata, Semantics and Ontologies},
   publisher = {Inderscience},
   volume = {2},
   number = {1},
   pages = {23--34},
   type = {Artikel in Zeitschrift},
   month = {Dezember},
   year = {2007},
   doi = {10.1504/IJMSO.2007.015073},
   language = {Englisch},
   cr-category = {H.3.3 Information Search and Retrieval,     I.2.4 Knowledge Representation Formalisms and Methods},
   ee = {ftp://ftp.informatik.uni-stuttgart.de/pub/library/ncstrl.ustuttgart_fi/ART-2007-09/ART-2007-09.pdf,     http://www.inderscience.com/browse/index.php?journalID=152&year=2007&vol=2&issue=1},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {A broad range of approaches to semantic document retrieval has been developed in the context of the Semantic Web. This survey builds bridges among them. We introduce a classification scheme for semantic search engines and clarify terminology. We present an overview of ten selected approaches and compare them by means of our classification criteria. Based on this comparison, we identify not only common concepts and outstanding features, but also open issues. Finally, we give directions for future application development and research.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2007-09&engl=0}
}
@article {ART-2005-01,
   author = {Stefan Berger and Christoph Mangold and Sebastian Meyer},
   title = {{Ontologiebasiertes Wissensmanagement in der Montage - Wissen in turbulenten Zeiten strukturiert einsetzen}},
   journal = {Industrie Management},
   address = {Berlin},
   publisher = {Gito Verlag},
   volume = {21},
   number = {1},
   pages = {49--52},
   type = {Artikel in Zeitschrift},
   month = {Februar},
   year = {2005},
   language = {Deutsch},
   cr-category = {H.3.3 Information Search and Retrieval},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {Produzierende Unternehmen sind in turbulenten Aufgabenumfeldern mit permanenten, nicht vorhersehbaren Ver{\"a}nderungen konfrontiert, zu deren Bew{\"a}ltigung ihnen nur wenig Zeit zur Verf{\"u}gung steht. Bereits heute pr{\"a}gen Umr{\"u}st- und Einstellvorg{\"a}nge den Arbeitsalltag in der Montage. In diesem Umfeld kommt dem Menschen als Probleml{\"o}ser und damit der Ressource Wissen und deren Management eine immer bedeutendere Funktion zu. Der folgende Beitrag zeigt Ansatzpunkte f{\"u}r ein Wissensmanagement-System f{\"u}r die Montage.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2005-01&engl=0}
}
@article {ART-2004-07,
   author = {Stefan Berger and Christoph Mangold and Sebastian Meyer},
   title = {{Wissensmanagement f{\"u}r die wandlungsf{\"a}hige Montage}},
   journal = {wt Werkstattstechnik},
   publisher = {Springer VDI Verlag},
   volume = {94},
   pages = {80--85},
   type = {Artikel in Zeitschrift},
   month = {M{\"a}rz},
   year = {2004},
   language = {Deutsch},
   cr-category = {H.3.3 Information Search and Retrieval},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {Turbulente Aufgabenumfelder verlangen von Unternehmen schnelle Antworten und Adaptionen. Wandlungsf{\"a}higkeit und Responsef{\"a}higkeit als entscheidende Erfolgsfaktoren basieren auf Wissen, das kontinuierlich zu verbessern und aufgabenspezifisch zu erneuern ist. Gezeigt wird, wie sich mit Hilfe von Wissensmanagement gezielt die Wandlungsf{\"a}higkeit in und von Unternehmen – speziell in der Montage – erh{\"o}hen l{\"a}sst.},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=ART-2004-07&engl=0}
}
@book {BOOK-2004-01,
   author = {Marco Litto and Izabela Korajda and Christoph Mangold and Ronald Angerbauer and Winfried Hils and Michael Lerche},
   title = {{Baukastenbasiertes Engineering mit F{\"o}deral - Ein Leitfaden f{\"u}r Maschinen- und Anlagenbauer}},
   address = {Frankfurt a.M},
   publisher = {VDMA Verlag},
   type = {Buch},
   month = {M{\"a}rz},
   year = {2004},
   isbn = {3-8163-0478-8},
   language = {Deutsch},
   cr-category = {H.m Information Systems Miscellaneous},
   department = {Universit{\"a}t Stuttgart, Institut f{\"u}r Parallele und Verteilte Systeme, Anwendersoftware},
   abstract = {Maschinen- und Anlagenhersteller haben das Ziel, die Standardisierung und den Wiederholgrad im Engineering und der Produktion zu erh{\"o}hen. Dazu ist es erforderlich, disziplin{\"u}bergreifend Baukastensysteme abzustimmen und zu entwickeln. M{\"o}glich wird dies durch ein Projektierungswerkzeug, das {\"u}bergeordnete Aufgaben des baukastenbasierten Engineerings zentral und durchg{\"a}ngig unterst{\"u}tzt, es gleichzeitig aber auch erm{\"o}glicht, die Spezifika und St{\"a}rken vorhandener Werkzeuge weiterhin zu nutzen. Das F{\"o}deral-Projekt machte sich zum Ziel, den Maschinen- und Anlagenbauern ein solches Projektierungswerkzeug zur Verf{\"u}gung zu stellen. Das vorliegende Dokument soll die Ergebnisse des F{\"o}deral-Projekts weiteren Firmen als Leitfaden f{\"u}r den Aufbau eigener Baukastensystematiken und Baukastensysteme dienen. Dazu enth{\"a}lt er folgende Themenschwerpunkte: - Darstellung der Grundlagen (F{\"o}deral-Methode, F{\"o}derale Informations-Architektur etc.) - Anwendung von Methode und Werkzeug am Beispiel einer Demonstrationsfr{\"a}sanlage - Anwendung von Methode und Werkzeug bei den Firmen Homag und Nagel - Erfahrungen der F{\"o}deral-Partner},
   url = {http://www2.informatik.uni-stuttgart.de/cgi-bin/NCSTRL/NCSTRL_view.pl?id=BOOK-2004-01&engl=0}
}