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Udo Hahn

Publication record assembled from the DBLP archive of ranked conferences.

Papers indexed

164

Venues

34

Active years

1983–2026

Best venue rank

A*

Where they publish

Papers

164 indexed papers, newest first.

YearVenueTitleAuthors
2026LRECDeveloping the German Medical Text Corpus (GeMTeX): Legal Compliance and Semantic Enrichment.Justin Hofenbitzer, Christina Lohr, Andrea Riedel, Rebekka Kiser, Aliaksandra Shutsko, Abanoub Abdelmalak, Peter Klgl, Jutta Romberg, Sarah Riepenhausen, Miriam Schechner, Jakob Faller, Frank A. Meineke, Luise Modersohn, Markus Lffler, Juliane Fluck, Udo Hahn, Stefan Schulz, Martin Boeker
2023EMNLPDOPA METER - A Tool Suite for Metrical Document Profiling and Aggregation.Christina Lohr, Udo Hahn
2022LRECGGPONC 2.0 - The German Clinical Guideline Corpus for Oncology: Curation Workflow, Annotation Policy, Baseline NER Taggers.Florian Borchert, Christina Lohr, Luise Modersohn, Jonas Witt, Thomas Langer, Markus Follmann, Matthias Gietzelt, Bert Arnrich, Udo Hahn, Matthieu-P. Schapranow
2022LREC"Beste Gre, Maria Meyer" - Pseudonymization of Privacy-Sensitive Information in Emails.Elisabeth Eder, Michael Wiegand, Ulrike Krieg-Holz, Udo Hahn
2021EACLAcquiring a Formality-Informed Lexical Resource for Style Analysis.Elisabeth Eder, Ulrike Krieg-Holz, Udo Hahn
2021EMNLPTowards Label-Agnostic Emotion Embeddings.Sven Buechel, Luise Modersohn, Udo Hahn
2020ACLLearning and Evaluating Emotion Lexicons for 91 Languages.Sven Buechel, Susanna Rcker, Udo Hahn
2020LRECCodE Alltag 2.0 - A Pseudonymized German-Language Email Corpus.Elisabeth Eder, Ulrike Krieg-Holz, Udo Hahn
2020LRECProGene - A Large-scale, High-Quality Protein-Gene Annotated Benchmark Corpus.Erik Faessler, Luise Modersohn, Christina Lohr, Udo Hahn
2020LRECAllgemeine Musikalische Zeitung as a Searchable Online Corpus.Bernd Kampe, Tinghui Duan, Udo Hahn
2020SIGIRWhat Makes a Top-Performing Precision Medicine Search Engine?: Tracing Main System Features in a Systematic Way.Erik Faessler, Michel Oleynik, Udo Hahn
2019RANLPDe-Identification of Emails: Pseudonymizing Privacy-Sensitive Data in a German Email Corpus.Elisabeth Eder, Ulrike Krieg-Holz, Udo Hahn
2018ACLA Corpus of Corporate Annual and Social Responsibility Reports: 280 Million Tokens of Balanced Organizational Writing.Sebastian G. M. Hndschke, Sven Buechel, Jan Goldenstein, Philipp Poschmann, Tinghui Duan, Peter Walgenbach, Udo Hahn
2018AMIACDA-compliant section annotation of German-language discharge summaries: Guideline development, annotation campaign, section classification.Christina Lohr, Stephanie Luther, Franz Matthies, Udo Hahn
2018COLINGEmotion Representation Mapping for Automatic Lexicon Construction (Mostly) Performs on Human Level.Sven Buechel, Udo Hahn
2018COLINGJeSemE: Interleaving Semantics and Emotions in a Web Service for the Exploration of Language Change Phenomena.Johannes Hellrich, Sven Buechel, Udo Hahn
2018DocEngAnnotation Data Management with JeDIS.Erik Faessler, Udo Hahn
2018LRECRepresentation Mapping: A Novel Approach to Generate High-Quality Multi-Lingual Emotion Lexicons.Sven Buechel, Udo Hahn
2018LRECSharing Copies of Synthetic Clinical Corpora without Physical Distribution - A Case Study to Get Around IPRs and Privacy Constraints Featuring the German JSYNCC Corpus.Christina Lohr, Sven Buechel, Udo Hahn
2018NAACLWord Emotion Induction for Multiple Languages as a Deep Multi-Task Learning Problem.Sven Buechel, Udo Hahn
2017ACLSemedico: A Comprehensive Semantic Search Engine for the Life Sciences.Erik Faessler, Udo Hahn
2017ACLExploring Diachronic Lexical Semantics with JeSemE.Johannes Hellrich, Udo Hahn
2017CogSciA Flexible Mapping Scheme for Discrete and Dimensional Emotion Representations.Sven Buechel, Udo Hahn
2017EACLEmoBank: Studying the Impact of Annotation Perspective and Representation Format on Dimensional Emotion Analysis.Sven Buechel, Udo Hahn
2016COLINGBad Company - Neighborhoods in Neural Embedding Spaces Considered Harmful.Johannes Hellrich, Udo Hahn
2016ECAIEmotion Analysis as a Regression Problem - Dimensional Models and Their Implications on Emotion Representation and Metrical Evaluation.Sven Buechel, Udo Hahn
2016EKAWSelecting and Tailoring Ontologies with JOYCE.Erik Faessler, Friederike Klan, Alsayed Algergawy, Birgitta Knig-Ries, Udo Hahn
2016LRECUIMA-Based JCoRe 2.0 Goes GitHub and Maven Central ― State-of-the-Art Software Resource Engineering and Distribution of NLP Pipelines.Udo Hahn, Franz Matthies, Erik Faessler, Johannes Hellrich
2016LRECCodE Alltag: A German-Language E-Mail Corpus.Ulrike Krieg-Holz, Christian Schuschnig, Franz Matthies, Benjamin Redling, Udo Hahn
2015AMIAJUFIT: A Configurable Rule Engine for Filtering and Generating New Multilingual UMLS Terms.Johannes Hellrich, Stefan Schulz, Sven Buechel, Udo Hahn
2014AMIAFostering Multilinguality in the UMLS: A Computational Approach to Terminology Expansion for Multiple Languages.Johannes Hellrich, Udo Hahn
2014CogSciAn Empirically Grounded Approach to Extend the Linguistic Coverage and Lexical Diversity of Verbal Probabilities.Christine Engelmann, Udo Hahn
2014LRECDisclose Models, Hide the Data - How to Make Use of Confidential Corpora without Seeing Sensitive Raw Data.Erik Faessler, Johannes Hellrich, Udo Hahn
2014LRECCollaboratively Annotating Multilingual Parallel Corpora in the Biomedical Domain―some MANTRAs.Johannes Hellrich, Simon Clematide, Udo Hahn, Dietrich Rebholz-Schuhmann
2014NLDBEnhancing Multilingual Biomedical Terminologies via Machine Translation from Parallel Corpora.Johannes Hellrich, Udo Hahn
2014PRICAIGrounding Epistemic Modality in Speakers' Judgments.Udo Hahn, Christine Engelmann
2013PSBSession introduction.Graciela Gonzalez, Kevin Bretonnel Cohen, Casey S. Greene, Udo Hahn, Maricel G. Kann, Robert Leaman, Nigam Shah, Jieping Ye
2012AMIAActive Learning-Based Corpus Annotation - The PathoJen Experience.Udo Hahn, Elena Beisswanger, Ekaterina Buyko, Erik Faessler
2012LRECIterative Refinement and Quality Checking of Annotation Guidelines - How to Deal Effectively with Semantically Sloppy Named Entity Types, such as Pathological Phenomena.Udo Hahn, Elena Beisswanger, Ekaterina Buyko, Erik Faessler, Jenny Traumller, Susann Schrder, Kerstin Hornbostel
2012LRECCALBC: Releasing the Final Corpora.Senay Kafkas, Ian Lewin, David Milward, Erik M. van Mulligen, Jan A. Kors, Udo Hahn, Dietrich Rebholz-Schuhmann
2012PSBThe Extraction of Pharmacogenetic and Pharmacogenomic Relations - A Case Study Using PharmGKB.Ekaterina Buyko, Elena Beisswanger, Udo Hahn
2012PSBSession introduction.Kevin Bretonnel Cohen, Yael Garten, Nigam Shah, Udo Hahn
2011IDATowards Automatic Pathway Generation from Biological Full-Text Publications.Ekaterina Buyko, Jrg Linde, Steffen Priebe, Udo Hahn
2011PSBWorkshop Introduction.Kevin Bretonnel Cohen, Yael Garten, Udo Hahn, Nigam H. Shah
2010ACLA Cognitive Cost Model of Annotations Based on Eye-Tracking Data.Katrin Tomanek, Udo Hahn, Steffen Lohmann, Jrgen Ziegler
2010COLINGA Comparison of Models for Cost-Sensitive Active Learning.Katrin Tomanek, Udo Hahn
2010EMNLPEvaluating the Impact of Alternative Dependency Graph Encodings on Solving Event Extraction Tasks.Ekaterina Buyko, Udo Hahn
2010LRECThe GeneReg Corpus for Gene Expression Regulation Events - An Overview of the Corpus and its In-Domain and Out-of-Domain Interoperability.Ekaterina Buyko, Elena Beisswanger, Udo Hahn
2010LRECThe CALBC Silver Standard Corpus for Biomedical Named Entities - A Study in Harmonizing the Contributions from Four Independent Named Entity Taggers.Dietrich Rebholz-Schuhmann, Antonio Jos Jimeno-Yepes, Erik M. van Mulligen, Ning Kang, Jan A. Kors, David Milward, Peter T. Corbett, Ekaterina Buyko, Katrin Tomanek, Elena Beisswanger, Udo Hahn
2010LRECAnnotation Time Stamps - Temporal Metadata from the Linguistic Annotation Process.Katrin Tomanek, Udo Hahn
2009ACLSemi-Supervised Active Learning for Sequence Labeling.Katrin Tomanek, Udo Hahn
2009SMCDo User Appreciate Novel Interface Features for Literature Search? - A User Study in the Life Sciences Domain.Joachim Wermter, Udo Hahn, Rico Landefeld, Anne Schneider
2008ACLBuilding a BioWordNet Using WordNet Data Structures and WordNet's Software Infrastructure-A Failure Story.Michael Poprat, Elena Beisswanger, Udo Hahn
2008ACLMulti-Task Active Learning for Linguistic Annotations.Roi Reichart, Katrin Tomanek, Udo Hahn, Ari Rappoport
2008COLINGAre Morpho-Syntactic Features More Predictive for the Resolution of Noun Phrase Coordination Ambiguity than Lexico-Semantic Similarity Scores?Ekaterina Buyko, Udo Hahn
2008LRECSemantic Annotations for Biology: a Corpus Development Initiative at the Jena University Language & Information Engineering (JULIE) Lab.Udo Hahn, Elena Beisswanger, Ekaterina Buyko, Michael Poprat, Katrin Tomanek, Joachim Wermter
2008LRECApproximating Learning Curves for Active-Learning-Driven Annotation.Katrin Tomanek, Udo Hahn
2007AMIAAn Ontology for Major Histocompatibility Complex (MHC) Alleles and Molecules.Elena Beisswanger, David S. DeLuca, Rainer Blasczyk, Udo Hahn
2007EMNLPAn Approach to Text Corpus Construction which Cuts Annotation Costs and Maintains Reusability of Annotated Data.Katrin Tomanek, Joachim Wermter, Udo Hahn
2006ACLYou Can't Beat Frequency (Unless You Use Linguistic Knowledge) - A Qualitative Evaluation of Association Measures for Collocation and Term Extraction.Joachim Wermter, Udo Hahn
2006AMIATowards an Upper-Level Ontology for Molecular Biology.Stefan Schulz, Elena Beisswanger, Joachim Wermter, Udo Hahn
2006FOISFrom GENIA to BIOTOP - Towards a Top-Level Ontology for Biology.Stefan Schulz, Elena Beisswanger, Udo Hahn, Joachim Wermter, Anand Kumar, Holger Stenzhorn
2006LRECSemantic Atomicity and Multilinguality in the Medical Domain: Design Considerations for the MorphoSaurus Subword Lexicon.Stefan Schulz, Kornl G. Mark, Philipp Daumke, Udo Hahn, Susanne Hanser, Percy Nohama, Roosewelt L. Andrade, Edson Jos Pacheco, Martin Romacker
2005AAAIUnsupervised Multilingual Word Sense Disambiguation via an Interlingua.Kornl G. Mark, Stefan Schulz, Udo Hahn
2005AMIAHow to Distinguish Parthood from Location in Bio-Ontologies.Stefan Schulz, Philipp Daumke, Barry Smith, Udo Hahn
2005AMIAEffective Grading of Termhood in Biomedical Literature.Joachim Wermter, Udo Hahn
2005DISCross-Language Mining for Acronyms and Their Completions from the Web.Udo Hahn, Philipp Daumke, Stefan Schulz, Kornl G. Mark
2005DISMassive Biomedical Term Discovery.Joachim Wermter, Udo Hahn
2005NAACLParadigmatic Modifiability Statistics for the Extraction of Complex Multi-Word Terms.Joachim Wermter, Udo Hahn
2005SIGIRBootstrapping dictionaries for cross-language information retrieval.Kornl G. Mark, Stefan Schulz, Olena Medelyan, Udo Hahn
2004AAAILearning Indexing Patterns from One Language for the Benefit of Others.Udo Hahn, Kornl G. Mark, Stefan Schulz
2004AAAIMereological Semantics for Bio-Ontologies.Udo Hahn, Stefan Schulz, Kornl G. Mark
2004COLINGHigh-Performance Tagging on Medical Texts.Udo Hahn, Joachim Wermter
2004COLINGCognate Mapping - A Heuristic Strategy for the Semi-Supervised Acquisition of a Spanish Lexicon from a Portuguese Seed Lexicon.Stefan Schulz, Kornl G. Mark, Eduardo Sbrissia, Percy Nohama, Udo Hahn
2004COLINGCollocation Extraction Based on Modifiability Statistics.Joachim Wermter, Udo Hahn
2004ECAIRepresenting Natural Kinds by Spatial Inclusion and Containment.Stefan Schulz, Udo Hahn
2004FlAIRSAn Experimental Assessment of Direct Versus. Interlingual Translation for Cross-Language Information Retrieval.Michael Poprat, Udo Hahn, Joachim Wermter, Stefan Schulz, Kornl G. Mark
2004KRParthood as Spatial Inclusion - Evidence from biomedical Conceptualizations.Stefan Schulz, Udo Hahn
2004LRECPumping Documents Through a Domain and Genre Classification Pipeline.Udo Hahn, Joachim Wermter
2004LRECAn Annotated German-Language Medical Text Corpus as Language Resource.Joachim Wermter, Udo Hahn
2004PRICAITagging Medical Documents with High Accuracy.Udo Hahn, Joachim Wermter
2003AMIACross-language MeSH Indexing using Morpho-Semantic Normalization.Kornl G. Mark, Philipp Daumke, Stefan Schulz, Udo Hahn
2003FlAIRSSubword Retrieval on Biomedical Documents.Udo Hahn, Stefan Schulz
2003PSBTowards a Broad-Coverage Biomedical Ontology Based on Description Logics.Udo Hahn, Stefan Schulz
2002ACLBiomedical text retrieval in languages with a complex morphology.Stefan Schulz, Martin Honeck, Udo Hahn
2002AMIAA knowledge representation view on biomedical structure and function.Stefan Schulz, Udo Hahn
2002AMIAMORPHOSAURUS: Crosslingual Medical Text Retrieval by Subword Indexing.Stefan Schulz, Rdiger Klar, Udo Hahn, Martin Romacker, Percy Nohama, Lcio J. Dias Matias
2002EKAWTurning Lead into Gold? Feeding a Formal Knowledge Base with Informal Conceptual Knowledge.Udo Hahn, Stefan Schulz
2002LRECTowards Very Large Ontologies for Medical Language Processing.Udo Hahn, Stefan Schulz
2002PSBCreating Knowledge Repositories from Biomedical Reports: The MEDSYNDIKATE Text Mining System.Udo Hahn, Martin Romacker, Stefan Schulz
2002SMC240, 000 concepts and relations-towards mega knowledge bases for real-world applications.Udo Hahn, Stefan Schulz
2001AIMESemantic Interpretation of Medical Language - Quantitative Analysis and Qualitative Yield.Martin Romacker, Udo Hahn
2001AIMEParts, Locations, and Holes - Formal Reasoning about Anatomical Structures.Stefan Schulz, Udo Hahn
2001AMIASubword segmentation-leveling out morphological variations for medical document retrieval.Udo Hahn, Martin Honeck, Michael Piotrowski, Stefan Schulz
2001AMIAEmpirical data for the semantic interpretation of prepositional phrases in medical documents.Martin Romacker, Udo Hahn
2001FlAIRSComputing in Formal Knowledge Base Contexts for Natural Language Ambiguity Resolution.Udo Hahn, Martin Romacker
2001FlAIRSBuilding a Large Knowledge Base Semi-Automatically.Udo Hahn, Stefan Schulz
2001FOISMereotopological reasoning about parts and (w)holes in bio-ontologies.Stefan Schulz, Udo Hahn
2001IDAA Search Engine for Morphologically Complex Languages.Udo Hahn, Martin Honeck, Stefan Schulz
2001NAACLThe SynDiKATe Text Knowledge Base Generator.Udo Hahn, Martin Romacker
2001NLDBLearning Grammatical and Taxonomic Knowledge in Tandem.Udo Hahn, Kornl G. Mark
2000AITowards Very Large Terminological Knowledge Bases: A Case Study from Medicine.Udo Hahn, Stefan Schulz
2000AMIAAutomated coding of diagnoses-three methods compared.Pius Franz, Albrecht Zaiss, Stefan Schulz, Udo Hahn, Rdiger Klar
2000AMIAMedSynDiKATe-design considerations for an ontology-based medical text understanding system.Udo Hahn, Martin Romacker, Stefan Schulz
2000AMIAModeling anatomical spatial relations with description logics.Stefan Schulz, Udo Hahn, Martin Romacker
2000COLINGAn Integrated Model of Semantic and Conceptual Interpretation from Dependency Structures.Udo Hahn, Martin Romacker
2000KRKnowledge Engineering by Large-Scale Knowledge Reuse - Experience from the Medical Domain.Stefan Schulz, Udo Hahn
2000NLDBCoping with Different Types of Ambiguity Using a Uniform Context Handling Mechanism.Martin Romacker, Udo Hahn
1999AAAIPartonomic Reasoning as Taxonomic Reasoning in Medicine.Udo Hahn, Stefan Schulz, Martin Romacker
1999AMIAStreamlining semantic interpretation for medical narratives.Martin Romacker, Stefan Schulz, Udo Hahn
1999AMIAAutomatic Import and Manual Refinement of Medical Knowledge.Stefan Schulz, Giovanni Faggioli, Martin Romacker, Udo Hahn
1999DEXAText Understanding for Knowledge Base Generation in the SYNDIKATE System.Udo Hahn, Martin Romacker
1999EPIAOn the Formal Distinction between Literal and Figurative Language.Udo Hahn, Katja Markert
1999IJCAILean Semantic Interpretation.Martin Romacker, Udo Hahn, Katja Markert
1999IJCAIScalable Temporal Reasoning.Steffen Staab, Udo Hahn
1998AAAITowards Text Knowledge Engineering.Udo Hahn, Klemens Schnattinger
1998ACLA Text Understander that Learns.Udo Hahn, Klemens Schnattinger
1998AIQuality Control in the Concept Learning Process.Udo Hahn, Klemens Schnattinger
1998AIDistance Constraint Arrays: A Model for Reasoning on Intervals with Qualitative and Quantitative Distances.Steffen Staab, Udo Hahn
1998AMIAPart-whole reasoning in medical ontologies revisited-introducing SEP triplets into classification-based description logics.Stefan Schulz, Martin Romacker, Udo Hahn
1998ECAIKnowledge Generation from Texts.Udo Hahn
1998ECAIText Summarization Based on Terminological Logics.Udo Hahn, Ulrich Reimer
1998FlAIRSA Learner with a Sense for Quality.Udo Hahn, Klemens Schnattinger
1998KIPart-Whole Reasoning in Medical Knowledge Bases Using Description Logics.Stefan Schulz, Martin Romacker, Udo Hahn
1997AAAIComparatives in Context.Steffen Staab, Udo Hahn
1997ACLCentering in-the-Large: Computing Referential Discourse Segments.Udo Hahn, Michael Strube
1997AMIAText structures in medical text processing: empirical evidence and a text understanding prototype.Udo Hahn, Martin Romacker
1997CIKMKnowledge Mining from Textual Sources.Udo Hahn, Klemens Schnattinger
1997DEXAText Knowledge Engineering by Qualitative Terminological Learning.Udo Hahn, Klemens Schnattinger
1997EKAWAn Empirical Evaluation of a System for Text Knowledge Acquisition.Udo Hahn, Klemens Schnattinger
1997EPIAIncremental Concept Evolution Based on Adaptive Feature Weighting.Udo Hahn, Manfred Klenner
1997EPIATemporal Reasoning about Actor Systems.Susanne Schacht, Udo Hahn
1997IJCAIOn the Interaction of Metonymies and Anaphora.Katja Markert, Udo Hahn
1997IJCAI"Tall", "Good", "High" - Compared to What?Steffen Staab, Udo Hahn
1997IDAIntelligent Text Analysis for Dynamically Maintaining and Updating Domain Knowledge Bases.Klemens Schnattinger, Udo Hahn
1997KDDDeep Knowledge Discovery from Natural Language Texts.Udo Hahn, Klemens Schnattinger
1997KIMaking Objects More Knowledgeable.Susanne Schacht, Udo Hahn
1997KIConstraining the Acquisition of Concepts by the Quality of Heterogeneous Evidence.Klemens Schnattinger, Udo Hahn
1996ACLFunctional Centering.Michael Strube, Udo Hahn
1996AIPARSETALK about Functional Anaphora.Udo Hahn, Michael Strube
1996COLINGBridging Textual Ellipses.Udo Hahn, Michael Strube, Katja Markert
1996COLINGRestricted Parallelism in Object-Oriented Lexical Parsing.Peter Neuhaus, Udo Hahn
1996ECAIA Conceptual Reasoning Approach to Textual Ellipsis.Udo Hahn, Katja Markert, Michael Strube
1996EKAWA Quality-Based Terminological Reasoning Model for Text Knowledge Acquisition.Udo Hahn, Manfred Klenner, Klemens Schnattinger
1996KIA Terminological Qualification Calculus for Preferential Reasoning under Uncertainty.Klemens Schnattinger, Udo Hahn
1995EACLParseTalk about Sentence- and Text-Level Anaphora.Michael Strube, Udo Hahn
1995EPIATerminological Meta-Reasoning by Reification and Multiple Contexts.Klemens Schnattinger, Udo Hahn, Manfred Klenner
1995IJCAILearning from texts - a terminological metareasoning perspective.Udo Hahn, Manfred Klenner, Klemens Schnattinger
1995KIQuality-Based Terminological Reasoning for Concept Learning.Klemens Schnattinger, Udo Hahn, Manfred Klenner
1994COLINGConcurrent Lexicalized Dependency Parsing: The ParseTalk Model.Norbert Brker, Udo Hahn, Susanne Schacht
1994COLINGConcurrent Lexicalized Dependency Parsing: A Behavioral View On ParseTalk Events.Susanne Schacht, Udo Hahn, Norbert Brker
1994DEXATracking the Evolution of Concepts in Dynamic Worlds.Udo Hahn, Manfred Klenner
1994ECAIConcept Versioning: A Methodology for Tracking Evolutionary Concept Drift in Dynamic Concept Systems.Manfred Klenner, Udo Hahn
1992COLINGOn Text Coherence Parsing.Udo Hahn
1990SIGIRPanel: Hypertext: "Growing Up?".Mark E. Frisse, Maristella Agosti, Marie-France Bruandet, Udo Hahn, Stephen F. Weiss
1989ECSCWCoNeX: Coordination and Negotiation Support for Expert Teams in Project Management.Udo Hahn, Matthias Jarke
1989KIDialogstrukturen in Gruppendiskussionen - Ein Modell fr argumentative Verhandlungen mehrerer Agenten.Udo Hahn
1988GroupAutomatic generation of hypertext knowledge bases.Udo Hahn, Ulrich Reimer
1987GIVerhandlungskonzepte fr die rechnergesttzte Teamarbeit.Matthias Jarke, Udo Hahn
1986COLINGTopic Essentials.Udo Hahn, Ulrich Reimer
1986ECAIA Generalized Word Expert Model of Lexically Distributed Text Parsing.Udo Hahn
1984COLINGTextual Expertise In Word Experts: An Approach To Text Parsing Based On Topic/Comment Monitoring.Udo Hahn
1984SIGIRComputing text Constituency: An Algorithmic Approach to the Generation of Text Graphs.Udo Hahn, Ulrich Reimer
1983IJCAIA Formal Approach to the Semantics of a Frame Data Model.Ulrich Reimer, Udo Hahn