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% Selection : Author: Bernd_Kiefer
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@TechReport{Backofen_et_al:1994,
      AUTHOR = {Backofen, Rolf and Busemann, Stephan and Diagne, Abdel Kader and Hinkelman, Elizabeth and Kasper, Walter and Kiefer, Bernd and Krieger, Hans-Ulrich and Netter, Klaus and Neumann, Günter and Oepen, Stephan and Spackman, Stephen P. and Uszkoreit, Hans},
      TITLE = {Abschlussbericht: DISCO - Dialogsystem für autonome kooperierende Agenten},
      YEAR = {1994},
      NUMBER = {R:S95-060},
      ADDRESS = {Saarbrücken},
      TYPE = {Report},
      INSTITUTION = {DFKI},
      URL = {http://www.dfki.de/dfkibib/publications/docs/Backofen_1994_DDFAKA.pdf},
      ABSTRACT = {In der Entwicklung der Informationstechnologie wird die natürliche Sprache zu einem unentbehrlichen Medium für die Kommunikation zwischen Menschen und ihren autonomen maschinellen Partnern (Agenten). Im Projekt DISCO wurde ein Dialogsystem entwickelt, das maschinelle Dialogpartner in die Lage versetzt, mit ihren menschlichen Partnern in natürlicher Sprache zu kommunizieren. Während existierende Dialogsysteme zur Kommunikation zwischen der Maschine und einem einzigen menschlichen Benutzer gedacht sind, nimmt das DISCO-System an Dialogen zwischen mehr als zwei Teilnehmern teil. Die autonomen kooperierenden Agenten, für die das DISCO-System geschaffen wurde, sind KISoftwaresysteme auf vernetzten Computern. DlSCO führte Forschung sowohl in Computerlinguistik als auch in anderen Gebieten der KI durch. Frühere Arbeiten an natürlichsprachlichen Dialogsystemen konzentrierten sich entweder auf moderne Methoden für die linguistische Spezifikation und die Sprachverarbeitung oder auf fortgeschrittene Dialogverarbeitung. Im Unterschied dazu konnte DISCO erfolgreich Resultate aus beiden Gebieten integrieren. Als Ergebnis erhielt das DFKI ein auf modernsten Technologien aufbauendes, umfangreiches, flexibles, erweiterbares natürlichsprachliches Kernsystem, das für eine Vielzahl von Anwendungsentwicklungen eingesetzt werden kann und bereits in mehreren anderen Projekten eingesetzt wird.},
      ANNOTE = {COLIURL : Backofen:1994:ADD.pdf}
}

@InProceedings{Crysmann_et_al:2002,
      AUTHOR = {Crysmann, Berthold and Frank, Anette and Kiefer, Bernd and Krieger, Hans-Ulrich and Müller, Stefan and Neumann, Günter and Piskorski, Jakub and Schäfer, Ulrich and Siegel, Melanie and Uszkoreit, Hans and Xu, Feiyu},
      TITLE = {An Integrated Architecture for Shallow and Deep Processing},
      YEAR = {2002},
      BOOKTITLE = {Proceedings of ACL-2002, Association for Computational Linguistics 40th Anniversary Meeting, July 7-12},
      ADDRESS = {Philadelphia, USA},
      URL = {http://www.dfki.de/~feiyu/wb-acl02.pdf http://www.dfki.de/~neumann/publications/new-ps/wb-acl02.pdf},
      ANNOTE = {COLIURL : Crysmann:2002:IAS.pdf}
}

@InProceedings{Kasper_et_al:1995,
      AUTHOR = {Kasper, Robert and Kiefer, Bernd and Netter, Klaus and Shanker, Vijay K.},
      TITLE = {Compilation of HPSG to TAG},
      YEAR = {1995},
      BOOKTITLE = {Proceedings of the 33rd Annual Meeting of the Association for Computational Linguistics (ACL-ANNUAL'95), June 26-30},
      PAGES = {92-99},
      ADDRESS = {Cambridge, Massachusetts, USA},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knacl95.ps.Z},
      ABSTRACT = {We present an implemented compilation algorithm that translates HPSG into lexicalized feature-based TAG, relating concepts of the two theories. While HPSG has a more elaborated principle-based theory of possible phrase structures, TAG provides the means to represent lexicalized structures more explicitly. Our objectives are met by giving clear definitions that determine the projection of structures from the lexicon, and identify maximal projections, auxiliary trees and foot nodes.},
      ANNOTE = {COLIURL : Kasper:1995:CHTa.pdf Kasper:1995:CHTa.ps}
}

@InProceedings{Kasper_et_al:1995_1,
      AUTHOR = {Kasper, Robert and Kiefer, Bernd and Netter, Klaus and Vijay-Shanker, Krishnamurti},
      TITLE = {Compilation of HPSG to TAG},
      YEAR = {1995},
      BOOKTITLE = {33rd Annual Meeting of the Association for Computational Linguistics (ACL-ANNUAL '95), June 26-30},
      PAGES = {92-99},
      EDITOR = {ACL},
      ADDRESS = {Cambridge, Massachusetts, USA},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knacl95.ps.Z ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knacl95.entry ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knacl95.dvi.Z},
      ANNOTE = {COLIURL : Kasper:1995:CHT.pdf Kasper:1995:CHT.ps Kasper:1995:CHT.dvi}
}

@InProceedings{Kasper_et_al:1999,
      AUTHOR = {Kasper, Walter and Kiefer, Bernd and Krieger, Hans-Ulrich and Rupp, Christopher J. and Worm, Karsten},
      TITLE = {Charting the Depths of Robust Speech Parsing},
      YEAR = {1999},
      BOOKTITLE = {37th Annual Meeting of the Association for Computational Linguistics (ACLANNUAL '99), June 20-26},
      PAGES = {405-412},
      EDITOR = {ACL},
      ADDRESS = {University of Maryland, College Park, USA},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/131.entry}
}

@InProceedings{Kasper_et_al:1999_1,
      AUTHOR = {Kasper, Walter and Kiefer, Bernd and Krieger, Hans-Ulrich and Rupp, Christopher J. and Worm, Karsten L.},
      TITLE = {Charting the Depths of Robust Speech Parsing},
      YEAR = {1999},
      BOOKTITLE = {Proceedings of the 37th Annual Meeting of the Association for Computational Linguistics (ACL'99), June 20-26},
      PAGES = {405-412},
      ADDRESS = {University of Maryland, College Park, USA},
      URL = {http://acl.ldc.upenn.edu/P/P99/P99-1052.pdf},
      ABSTRACT = {We describe a novel method for coping with ungrammatical input based on the use of chart-like data structures, which permit anytime processing. Priority is given to deep syntactic analysis. Should this fail, the best partial analyses are selected, according to a shortest-paths algorithm, and assembled in a robust processing phase. The method has been applied in a speech translation project with large HPSG grammars.},
      ANNOTE = {COLIURL : Kasper:1999:CDRb.pdf}
}

@TechReport{Kiefer_Fettig:1995,
      AUTHOR = {Kiefer, Bernd and Fettig, Thomas},
      TITLE = {FEGRAMED - An Interactive Graphics Editor for Feature Structures},
      YEAR = {1995},
      NUMBER = {RR-95-06},
      ADDRESS = {Saarbrücken},
      TYPE = {Research Report},
      INSTITUTION = {DFKI},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/fegramed.ps.gz ftp://ftp.dfki.uni-kl.de/pub/Publications/ResearchReports/1995/RR-95-06.ps.gz},
      ABSTRACT = {This paper describes a tool for supporting grammar development in those linguistic frameworks which employ some constraint-based formalism, such as LFG (Lexical Functional Grammar), HPSG (Head-Driven Phrase Structure Grammar), FUG (Functional Unification Grammar) and CUG (Categorial Unification Grammar). These approaches have in common that all or at least a substantial part of the grammar (such as rules, lexical entries, node labels etc.) is represented as sets of attribute-value pairs. In LISP or Prolog the structures can be internally represented as lists, but it is much more convenient and sometimes even indispensable to use graphical representations when developing grammars. During grammar processing, feature structures can become quite large (up to several thousand nodes), such that a customized view of the feature structure, which allows to selectively focus on relevant parts, becomes essential. Fegramed provides a fully interactive editor for developing, maintaining and viewing feature structures. It is a tool that is built to cope with the complexity of feature structures in grammar development and use.},
      ANNOTE = {COLIURL : Kiefer:1995:FIG.pdf Kiefer:1995:FIG.ps}
}

@InProceedings{Kiefer_Krieger:2000,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich},
      TITLE = {A Context-Free Approximation of Head-Driven Phrase Structure Grammar},
      YEAR = {2000},
      BOOKTITLE = {Proceedings of the 6th International Workshop on Parsing Technologies (IWPT'00), February 23-25},
      PAGES = {135-146},
      ADDRESS = {Trento, Italy},
      ABSTRACT = {We present a context-free approximation of unification-based grammars, such as HPSG or PATR-II. The theoretical underpinning is established through a least fixpoint construction over a certain monotonic function. In order to reach a finite fixpoint, the concrete implementation can be parameterized in several ways, either by specifying a finite iteration depth, by using different restrictors, or by making the symbols of the CFG more complex adding annotations à la GPSG. We also present several methods that speed up the approximation process and help to limit the size of the resulting CF grammar.}
}

@InCollection{Kiefer_Krieger:2001,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich},
      TITLE = {A Context-Free Approximation of Head-Driven Phrase Structure Grammar},
      YEAR = {2001},
      BOOKTITLE = {Efficiency in Unification-Based Processing},
      PUBLISHER = {CSLI Lecture Notes},
      ABSTRACT = {We present a context-free approximation of unification-based grammars, such as HPSG or PATR-II. The theoretical underpinning is established through a least fixpoint construction over a certain monotonic function. In order to reach a finite fixpoint, the concrete implementation can be parameterized in several ways, either by specifying a finite iteration depth, by using different restrictors, or by making the symbols of the CFG more complex adding annotations à la GPSG. We also present several methods that speed up the approximation process and help to limit the size of the resulting CF grammar.}
}

@InCollection{Kiefer_Krieger:2002,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich},
      TITLE = {A Context-Free Approximation of Head-Driven Phrase Structure Grammar},
      YEAR = {2002},
      BOOKTITLE = {Collaborative Language Engineering. A Case Study in Efficient Grammar-Based Processing},
      EDITOR = {Oepen, Stephan and Flickinger, Dan and Tsujii, Jun-ichi and Uszkoreit, Hans},
      ADDRESS = {Stanford},
      PUBLISHER = {CSLI Publications},
      ABSTRACT = {We present a context-free approximation of unification-based grammars, such as HPSG or PATR-II. The theoretical underpinning is established through a least fixpoint construction over a certain monotonic function. In order to reach a finite fixpoint, the concrete implementation can be parameterized in several ways, either by specifying a finite iteration depth, by using different restrictors, or by making the symbols of the CFG more complex adding annotations à la GPSG. We also present several methods that speed up the approximation process and help to limit the size of the resulting CF grammar.}
}

@InProceedings{Kiefer_et_al:1999,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich and Carroll, John and Malouf, Robert},
      TITLE = {A Bag of Useful Techniques for Efficient and Robust Parsing},
      YEAR = {1999},
      BOOKTITLE = {Proceedings of the 37th Annual Meeting of the Association for Computational Linguistics (ACL-ANNUAL'99), June 20 - 26},
      PAGES = {473-480},
      ADDRESS = {College Park, Maryland, USA},
      PUBLISHER = {ACL},
      URL = {http://www.cogs.susx.ac.uk/lab/nlp/carroll/papers/acl99.pdf},
      ABSTRACT = {This paper describes new and improved techniques which help a unification based parser to process input efficiently and robustly. In combination these methods result in a speed up in parsing time of more than an order of magnitude. The methods are correct in the sense that none of them rule out legal rule applications.},
      ANNOTE = {COLIURL : Kiefer:1999:BUT.pdf}
}

@InCollection{Kiefer_et_al:2000,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich and Nederhof, Mark-Jan},
      TITLE = {Efficient and Robust Parsing of Word Hypotheses Graphs},
      YEAR = {2000},
      BOOKTITLE = {Verbmobil: Foundations of Speech-to-Speech Translation},
      PAGES = {280-295},
      EDITOR = {Wahlster, Wolfgang},
      ADDRESS = {Berlin},
      PUBLISHER = {Springer},
      ABSTRACT = {This paper describes new and improved techniques which help a unification-based parser to process input efficiently and robustly. In combination these methods result in a speed-up in parsing time of more than an order of magnitude. The methods are correct in the sense that none of them rule out legal rule applications.}
}

@InProceedings{Kiefer_et_al:2002,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich and Prescher, Detlef},
      TITLE = {A Novel Disambiguation Method For Unification-Based Grammars Using Probabilistic Context-Free Approximations},
      YEAR = {2002},
      BOOKTITLE = {Proceedings of the 19th International Conference on Computational Linguistics (COLING'02), August 24 - September 1},
      ADDRESS = {Taipei, Taiwan},
      URL = {http://www.dfki.de/dfkibib/publications/docs/paper-alternative-font2},
      ABSTRACT = {We present a novel disambiguation method for unificationbased grammars (UBGs). In contrast to other methods, our approach obviates the need for probability models on the UBG side in that it shifts the responsibility to simpler contextfree models, indirectly obtained from the UBG. Our approach has three advantages: (i) training can be effectively done in practice, (ii) parsing and disambiguation of contextfree readings requires only cubic time, and (iii) involved probability distributions are mathematically clean. In an experiment for a midsize UBG, we show that our novel approach is feasible. Using unsupervised training, we achieve 88% accuracy on an exactmatch task.},
      ANNOTE = {COLIURL : Kiefer:2002:NDM.pdf Kiefer:2002:NDM.ps}
}

@InProceedings{Kiefer_et_al:2000_1,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich and Siegel, Melanie},
      TITLE = {An HPSG-to-CFG Approximation of Japanese},
      YEAR = {2000},
      BOOKTITLE = {Proceedings of the 18th International Conference on Computational Linguistics (COLING'00), July 31 - August 4},
      VOLUME = {2},
      PAGES = {1046-1050},
      ADDRESS = {Saarbrücken, Deutschland},
      PUBLISHER = {Morgan Kaufmann Publishers},
      URL = {http://www.dfki.de/~siegel/coling00.ps.gz},
      ABSTRACT = {We present a simple approximation method for turn- ing a Head-Driven Phrase Structure Grammar into a context-free grammar. The approximation method can be seen as the construction of the least fixpoint of a certain monotonic function. We discuss an ex- periment with a large HPSG for Japanese.},
      ANNOTE = {COLIURL : Kiefer:2000:HCA.pdf Kiefer:2000:HCA.ps}
}

@TechReport{Kiefer_et_al:1997,
      AUTHOR = {Kiefer, Bernd and Netter, Klaus and Neumann, Günter and Uszkoreit, Hans},
      TITLE = {PARADICE - Parameterizable Discourse Core Engine},
      YEAR = {1997},
      NUMBER = {R:S97-223},
      ADDRESS = {Saarbrücken},
      TYPE = {DFKI-Report},
      INSTITUTION = {DFKI},
      URL = {http://www.dfki.de/dfkibib/publications/docs/Kiefer_1997_PPDCE.pdf},
      ANNOTE = {COLIURL : Kiefer:1997:PPD.pdf}
}

@InProceedings{Netter_et_al:1994,
      AUTHOR = {Netter, Klaus and Kasper, Robert and Kiefer, Bernd and Shanker, Vijay K.},
      TITLE = {HPSG and TAG},
      YEAR = {1994},
      BOOKTITLE = {Proceedings of the 3eme Colloque International sur les Grammaires d'Arbres Adjoints, September},
      NUMBER = {RT-94-01},
      PAGES = {77-82},
      SERIES = {(TAG+3) Rapport TALANA},
      ADDRESS = {Paris, France},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knh2tparis.ps.Z},
      ABSTRACT = {We present a compilation algorithm that translates Head Driven Phrase Structure Grammars into lexicalized feature based Tree Adjoining Grammars. Through this exercise we attempt to gain further insights into the nature of the two theories and to identify correlating concepts. While HPSG has a more elaborated lexicalized and principle-based theory of functor argument structures, TAG provides the means to represent lexical-based structural information more explicitly and to factor out recursion. Our objectives are met by giving clear and simple definitions for projecting structure from the lexicon, for determining maximal projections, and for identifying potential auxiliary trees and foot nodes.}
}

@InProceedings{Netter_et_al:1994_1,
      AUTHOR = {Netter, Klaus and Kasper, Robert and Kiefer, Bernd and Vijay-Shanker, Krishnamurti},
      TITLE = {HPSG and TAG},
      YEAR = {1994},
      BOOKTITLE = {3eme Colloque International sur les Grammaires d'Arbres Adjoints, September},
      NUMBER = {RT-94-01},
      PAGES = {77-82},
      SERIES = {(TAG+3) Rapport TALANA},
      ADDRESS = {Paris, France},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knh2tparis.ps.Z ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knh2tparis.dvi.Z ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/knh2tparis.entry}
}

@InProceedings{Uszkoreit_et_al:1994,
      AUTHOR = {Uszkoreit, Hans and Backofen, Rolf and Busemann, Stephan and Diagne, Abdel Kader and Hinkelman, Elizabeth and Kasper, Walter and Kiefer, Bernd and Krieger, Hans-Ulrich and Netter, Klaus and Neumann, Günter and Oepen, Stephan and Spackman, Stephen P.},
      TITLE = {DISCO - An HPSG-Based NLP System and its Application for Appointment Scheduling},
      YEAR = {1994},
      BOOKTITLE = {Proceedings of the 15th International Conference on Computational Linguistics (COLING'94), August 5-9},
      VOLUME = {1},
      PAGES = {436-440},
      ADDRESS = {Kyoto, Japan},
      URL = {ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/coli.ps.Z ftp://ftp.dfki.uni-kl.de/pub/Publications/ResearchReports/1994/RR-94-38.ps.gz ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/coli.dvi.Z ftp://lt-ftp.dfki.uni-sb.de/pub/papers/local/coli.entry},
      ABSTRACT = {The natural language system DISCO is described. It combines - a powerful and flexible grammar development system - linguistic competence for German including morphology, syntax and semantics - new methods for linguistic performance modelling on the basis of high-level competence grammars - new methods for modelling multi-agent dialogue competence - an interesting sample application for appointment scheduling and calendar management},
      ANNOTE = {COLIURL : Uszkoreit:1994:DHBa.pdf Uszkoreit:1994:DHBa.ps}
}

@TechReport{Uszkoreit_et_al:1994_1,
      AUTHOR = {Uszkoreit, Hans and Backofen, Rolf and Busemann, Stephan and Diagne, Abdel Kader and Hinkelman, Elizabeth and Kasper, Walter and Kiefer, Bernd and Krieger, Hans-Ulrich and Netter, Klaus and Neumann, Günter and Oepen, Stefan and Spackmann, Stephen},
      TITLE = {DISCO - An HPSG-Based NLP System and its Application for Appointment Scheduling},
      YEAR = {1994},
      NUMBER = {RR-94-38},
      ADDRESS = {Saarbrücken},
      TYPE = {Research Report},
      INSTITUTION = {DFKI},
      ABSTRACT = {The natural language system DISCO is described. It combines o a powerful and flexible grammar development system; o linguistic competence for German including morphology, syntax and semantics; o new methods for linguistic performance modelling on the basis of high-level competence grammars; o new methods for modelling multi-agent dialogue competence; o an interesting sample application for appointment scheduling and calendar management.},
      ANNOTE = {COLIURL : Uszkoreit:1994:DHBb.pdf Uszkoreit:1994:DHBb.ps}
}

@InProceedings{DeKrKiSpLe2997,
      AUTHOR = {Declerck, Thierry and Krieger, Hans-Ulrich and Kiefer, Bernd and Spies, Marcus and Leibold, Christian},
      TITLE = {Integration of Semantic Resources and Tools for Business Intelligence},
      YEAR = {2007},
      BOOKTITLE = {International Workshop on Semantic-Based Software Development, Montreal, Canada},
      NOTE = {HU}
}

@InProceedings{KrKiDe2008,
      AUTHOR = {Krieger, Hans-Ulrich and Kiefer, Bernd and Declerck, Thierry},
      TITLE = {A framework for temporal representation and reasoning in business intelligence applications},
      YEAR = {2008},
      BOOKTITLE = {AI meets business rules and process management : papers from the AAAI spring symposium ; [held March 26 - 28, 2008 at Stanford University, Stanford, California, USA]},
      ADDRESS = {Menlo Park, Calif.},
      ORGANIZATION = {AAAI},
      PUBLISHER = {AAAI Press},
      NOTE = {HU}
}

@InProceedings{KrKiDe2008a,
      AUTHOR = {Krieger, Hans-Ulrich and Kiefer, Bernd and Declerck, Thierry},
      TITLE = {A hybrid reasoning architecture for business intelligence applications},
      YEAR = {2008},
      BOOKTITLE = {Proceedings of the 2008 8th International Conference on Hybrid Intelligent Systems : Barcelona, Spain, September 10-12, 2008},
      PAGES = {843-848},
      ADDRESS = {Los Alamitos, CA},
      ORGANIZATION = {IEEE Computer Society},
      NOTE = {HU}
}

@InProceedings{AdOeCaCrFlKi2008,
      AUTHOR = {Adolphs, Peter and Oepen, Stephan and Callmeier, Ulrich and Crysmann, Berthold and Flickinger, Dan and Kiefer, Bernd},
      TITLE = {Some fine points of hybrid natural language parsing},
      YEAR = {2008},
      BOOKTITLE = {Proceedings of the 6th International Conference on Language Resources and Evaluation : LREC 2008, May 26 - June 1, 2008, Palais des congrès Mansour Eddahbi, Marrakech, Morocco},
      PAGES = {1380-1387},
      ADDRESS = {Paris},
      ORGANIZATION = {ELRA},
      NOTE = {HU}
}

@Article{Bar211,
      AUTHOR = {Barreiro, Anabela and Scott, Bernard and Kasper, Walter and Kiefer, Bernd},
      TITLE = {OpenLogos machine translation : philosophy, model, resources and customization},
      YEAR = {2011},
      JOURNAL = {Machine translation},
      VOLUME = {25},
      NUMBER = {2},
      PAGES = {107-126}
}

@InProceedings{KriKi2011,
      AUTHOR = {Krieger, Hans-Ulrich and Kiefer, Bernd},
      TITLE = {Converting CCGs into typed feature structure grammars},
      YEAR = {2011},
      BOOKTITLE = {Proceedings of the HPSG 2011 Conference : [Seattle, Wash.], University of Washington, August 22–25, 2011 / 18th International Conference on Head-Driven Phrase Structure Grammar},
      PAGES = {109–125},
      ADDRESS = {Stanford, Calif.},
      PUBLISHER = {CSLI Publications}
}

@InProceedings{KruAt2011,
      AUTHOR = {Kruijff-Korbayova, Ivana and Athanasopoulos, Georgios and Beck, Aryel and Cosi, Piero and Cuayáhuitl, Heriberto and Dekens, Tomas and Enescu, Valentin and Hiolle, Antoine and Kiefer, Bernd and Sahli, Hichem and Schröder, Marc and Sommavilla, Giacomo and Tesser, Fabio and Verhelst, Werner},
      TITLE = {An event-based conversational system for the Nao robot},
      YEAR = {2011},
      BOOKTITLE = {Proceedings of the Paralinguistic Information and its Integration in Spoken Dialogue Systems Workshop},
      PAGES = {125-132},
      EDITOR = {Delgado, Ramón López-Cózar and Kobayashi, Tetsunori},
      ADDRESS = {New York [u.a.]},
      PUBLISHER = {Springer},
      NOTE = {ISBN 978-1-4614-1334-9 }
}

@InProceedings{SchKi2011,
      AUTHOR = {Schäfer, Ulrich and Kiefer, Bernd},
      TITLE = {Advances in deep parsing of scholarly paper content},
      YEAR = {2011},
      BOOKTITLE = {Advanced language technologies for digital libraries : international workshops on NLP4DL 2009, Viareggio, Italy, June 15, 2009 and AT4DL 2009, Trento, Italy, September 8, 2009. - (Lecture notes in computer science ; 6699 : Hot topics)},
      EDITOR = {Bernardi, Raffaella and Chambers, Sally and Gottfried, Björn and Segond, Frédérique and Zaihrayeu, Ilya},
      ADDRESS = {Berlin [u.a.]},
      PUBLISHER = {Springer},
      NOTE = {ISBN/ISSN: 978-3-642-23159-9}
}

@InProceedings{SchäSp2011,
      AUTHOR = {Schäfer, Ulrich and Kiefer, Bernd and Spurk, Christian and Steffen, Jörg and Wang, Rui},
      TITLE = {The ACL Anthology Searchbench},
      YEAR = {2011},
      BOOKTITLE = {49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies : proceedings of system demonstrations ; ACL HLT 2011 ; 21 June 2011, Portland, Oregon, USA},
      PAGES = {7-13},
      ADDRESS = {Stroudsburg, PA},
      PUBLISHER = {ACL},
      NOTE = {ISBN/ISSN: 978-1-932432-90-9}
}

@Article{SchKie2013,
      AUTHOR = {Schäfer, Ulrich and Kiefer, Bernd and Spurk, Christian and Steffen, Jörg and Wang, Rui and Weitz, Benjamin and Wolska, Magdalena},
      TITLE = {The Searchbench - combining sentence-semantic, full-text and bibliographic search in digital libraries},
      YEAR = {2013},
      JOURNAL = {LIBER Quarterly Journal},
      VOLUME = {22},
      NUMBER = {4},
      PAGES = {285-309},
      NOTE = {HU, MP}
}

@InProceedings{KieKrie2013,
      AUTHOR = {Kiefer, Bernd and Krieger, Hans-Ulrich},
      TITLE = {An efficient typed feature structure index : theory and implementation},
      YEAR = {2013},
      MONTH = {27-29 November},
      BOOKTITLE = {Proceedings of the 13th International Conference on Parsing Technologies, IWPT-2013},
      PAGES = {17-25},
      ADDRESS = {Nara},
      NOTE = {HU}
}

@InProceedings{KruiKie2013,
      AUTHOR = {Kruijff-Korbayova, Ivana and Kiefer, Bernd and Baroni, Ilaria and Coti Zelati, Mattia},
      TITLE = {Making human-robot quiz dialogue more conversational by adding non-quiz talk},
      YEAR = {2013},
      MONTH = {16-18 December},
      BOOKTITLE = {SEMDIAL 2013: DialDam ; proceedings of the 17th Workshop on the Semantics and Pragmatics of Dialogue},
      PAGES = {213-214},
      EDITOR = {Fernández, Raquel and Isard, Amy},
      ADDRESS = {Amsterdam},
      NOTE = {HU}
}

@InProceedings{KruOle2014,
      AUTHOR = {Kruijff-Korbayova, Ivana and Oleari, Elettra and Pozzi, Clara and Racioppa, Stefania and Kiefer, Bernd},
      TITLE = {Analysis of the Responses to System-Initiated Off-Activity Talk in Human-Robot Interaction with Diabetic Children},
      YEAR = {2014},
      BOOKTITLE = {Proceedings of the 18th Workshop on the Semantics and Pragmatics of Dialogue. Workshop Series on the Semantics and Pragmatics of Dialogue (SEMDIAL-2014)},
      PAGES = {90-97},
      ADDRESS = {Heriot Watt University, Edinburgh, United Kingdom}
}

@InProceedings{KruBar2014,
      AUTHOR = {Kruijff-Korbayova, Ivana and Baroni, Ilaria and Nalin, Marco and Cuayáhuitl, Heriberto and Kiefer, Bernd and Sanna, Alberto},
      TITLE = {Children’s Turn-Taking Behavior Adaptation in Multi-Session Interactions with a Humanoid Robot},
      YEAR = {2014},
      MONTH = {3-6 March},
      BOOKTITLE = {Workshop on Timing in Human-Robot Interaction. ACM/IEEE International Conference on Human-Robot Interaction (HRI), ACM/IEEE},
      ADDRESS = {Bielefeld, Germany}
}

@InProceedings{KruOl2014,
      AUTHOR = {Kruijff-Korbayova, Ivana and Oleari, Elettra and Baroni, Ilaria and Kiefer, Bernd and Coti Zelati, Mattia and Pozzi, Clara and Sanna, Alberto},
      TITLE = {Effects of Off-Activity Talk in Human-Robot Interaction with Diabetic Children},
      YEAR = {2014},
      MONTH = {25-29 August},
      BOOKTITLE = {Ro-Man 2014: The 23rd IEEE International Symposium on Robot and Human Interactive Communication. IEEE International Symposium on Robot and Human Interactive Communication (RO-MAN)},
      PAGES = {649-654},
      ADDRESS = {Edinburgh, United Kingdom}
}

@Article{KieGebKla2017,
      AUTHOR = {Kiefer, Bernd and Gebru Tesfay, Abraham and Klakow, Dietrich},
      TITLE = {Terrain Classification for Ground Robots Based on Acoustic Features},
      YEAR = {2017},
      JOURNAL = {International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering},
      VOLUME = {11},
      NUMBER = {6},
      PAGES = {544-548},
      NOTE = {DK, LT}
}