DISCO-An HPSG-based NLP System and its Application for Appointment Scheduling Project Note. - Hans Uszkoreit; Rolf Backofen; Stephan Busemann; Abdel Kader Diagne; Elizabeth A. Hinkelman; Walter Kasper; Bernd Kiefer; Hans-Ulrich Krieger; Klaus Netter; Günter Neumann; Stephan Oepen; Stephen P. Spackman (COLING, 1994)

TSNLP - Test Suites for Natural Language Processing. - Sabine Lehmann; Stephan Oepen; Sylvie Regnier-Prost; Klaus Netter; Veronika Lux; Judith Klein; Kirsten Falkedal; Frederik Fouvry; Dominique Estival; Eva Dauphin; Herve Compagnion; Judith Baur; et al. (COLING, 1996)

Towards systematic grammar profiling.Test suite technology 10 years after. - Stephan Oepen; Dan Flickinger (Comput. Speech Lang., 1998)

Studien zur performanzorientierten Linguistik Aspekte der Relativsatzextraposition im Deutschen. - Hans Uszkoreit; Thorsten Brants; Denys Duchier; Brigitte Krenn; Lars Konieczny; Stephan Oepen; Wojciech Skut (Kognitionswissenschaft, 1998)

Cross-Platform, Cross-Grammar Comparison - Can it be Done? - Ulrich Callmeier; Stephan Oepen (ELSPS, 2000)

Efficient Large-Scale Parsing - a Survey. - John Carroll 001; Stephan Oepen (ELSPS, 2000)

Ambiguity Packing in Constraint-based Parsing Practical Results. - Stephan Oepen; John Carroll 001 (ANLP, 2000)

Measure for Measure: Parser Cross-fertilization - Towards Increased Component Comparability and Exchange. - Stephan Oepen; Ulrich Callmeier (IWPT, 2000)

Parser engineering and performance profiling. - Stephan Oepen; John Carroll 001 (Nat. Lang. Eng., 2000)

Introduction to this Special Issue. - Stephan Oepen; Dan Flickinger; Hans Uszkoreit; Jun'ichi Tsujii (Nat. Lang. Eng., 2000)

The LinGO Redwoods Treebank: Motivation and Preliminary Applications. - Stephan Oepen; Kristina Toutanova; Stuart M. Shieber; Christopher D. Manning; Dan Flickinger; Thorsten Brants (COLING, 2002)

Competence and performance profiling for constraint-based grammars: a new methodology, toolkit, and applications. - Stephan Oepen (2002)

Road-testing the English Resource Grammar Over the British National Corpus. - Timothy Baldwin; Emily M. Bender; Dan Flickinger; Ara Kim; Stephan Oepen (LREC, 2004)

A Lexicon Module for a Grammar Development Environment. - Ann A. Copestake; Fabre Lambeau; Benjamin Waldron; Francis Bond; Dan Flickinger; Stephan Oepen (LREC, 2004)

High Precision Treebanking-Blazing Useful Trees Using POS Information. - Takaaki Tanaka; Francis Bond; Stephan Oepen; Sanae Fujita (ACL, 2005)

Holistic regression testing for high-quality MT: some methodological and technological reflections. - Stephan Oepen; Helge Dyvik; Dan Flickinger; Jan Tore Lønning; Paul Meurer; Victoria Rosén (EAMT, 2005)

High Efficiency Realization for a Wide-Coverage Unification Grammar. - John Carroll 001; Stephan Oepen (IJCNLP, 2005)

SEM-I Rational MT: Enriching Deep Grammars with a Semantic Interface for Scalable Machine Translation. - Dan Flickinger; Jan Tore Lønning; Helge Dyvik; Stephan Oepen; Francis Bond (MTSummit, 2005)

Maximum Entropy Models for Realization Ranking. - Erik Velldal; Stephan Oepen (MTSummit, 2005)

Re-Usable Tools for Precision Machine Translation. - Jan Tore Lønning; Stephan Oepen (ACL, 2006)

Using a Bi-Lingual Dictionary in Lexical Transfer. - Lars Nygaard; Jan Tore Lønning; Torbjørn Nordgård; Stephan Oepen (EAMT, 2006)

Statistical Ranking in Tactical Generation. - Erik Velldal; Stephan Oepen (EMNLP, 2006)

Discriminant-Based MRS Banking. - Stephan Oepen; Jan Tore Lønning (LREC, 2006)

Efficiency in Unification-Based N-Best Parsing. - Yi Zhang 003; Stephan Oepen; John Carroll 001 (IWPT, 2007)

Towards hybrid quality-oriented machine translation - on linguistics and probabilities in MT. - Stephan Oepen; Erik Velldal; Jan Tore Lønning; Paul Meurer; Victoria Rosén; Dan Flickinger (TMI, 2007)

Some Fine Points of Hybrid Natural Language Parsing. - Peter Adolphs; Stephan Oepen; Ulrich Callmeier; Berthold Crysmann; Dan Flickinger; Bernd Kiefer (LREC, 2008)

Hybrid Multilingual Parsing with HPSG for SRL. - Yi Zhang 003; Rui Wang 005; Stephan Oepen (CoNLL Shared Task, 2009)

Automatic Translation of Norwegian Noun Compounds. - Lars Bungum; Stephan Oepen (EAMT, 2009)

Efficiency in Unification-Based N-Best Parsing. - Yi Zhang 003; Stephan Oepen; John Carroll 001 (Trends in Parsing Technology, 2010)

Syntactic Scope Resolution in Uncertainty Analysis. - Lilja Øvrelid; Erik Velldal; Stephan Oepen (COLING, 2010)

Resolving Speculation: MaxEnt Cue Classification and Dependency-Based Scope Rules. - Erik Velldal; Lilja Øvrelid; Stephan Oepen (CoNLL Shared Task, 2010)

WikiWoods: Syntacto-Semantic Annotation for English Wikipedia. - Dan Flickinger; Stephan Oepen; Gisle Ytrestøl (LREC, 2010)

Parser Evaluation over Local and Non-Local Deep Dependencies in a Large Corpus. - Emily M. Bender; Dan Flickinger; Stephan Oepen; Yi Zhang 003 (EMNLP, 2011)

Treeblazing: Using External Treebanks to Filter Parse Forests for Parse Selection and Treebanking. - Andrew MacKinlay; Rebecca Dridan; Dan Flickinger; Stephan Oepen; Timothy Baldwin (IJCNLP, 2011)

Parser Evaluation Using Elementary Dependency Matching. - Rebecca Dridan; Stephan Oepen (IWPT, 2011)

Deep open-source machine translation. - Francis Bond; Stephan Oepen; Eric Nichols; Dan Flickinger; Erik Velldal; Petter Haugereid (Mach. Transl., 2011)

Towards High-Quality Text Stream Extraction from PDF. Technical Background to the ACL 2012 Contributed Task. - Øyvind Raddum Berg; Stephan Oepen; Jonathon Read (Discoveries@ACL, 2012)

Tokenization: Returning to a Long Solved Problem - A Survey, Contrastive Experiment, Recommendations, and Toolkit -. - Rebecca Dridan; Stephan Oepen (ACL (2), 2012)

Towards an ACL Anthology Corpus with Logical Document Structure. An Overview of the ACL 2012 Contributed Task. - Ulrich Schäfer 001; Jonathon Read; Stephan Oepen (Discoveries@ACL, 2012)

Who Did What to Whom? A Contrastive Study of Syntacto-Semantic Dependencies. - Angelina Ivanova; Stephan Oepen; Lilja Øvrelid; Dan Flickinger (LAW@ACL, 2012)

Sentence Boundary Detection: A Long Solved Problem? - Jonathon Read; Rebecca Dridan; Stephan Oepen; Lars Jørgen Solberg (COLING (Posters), 2012)

The WeSearch Corpus, Treebank, and Treecache - A Comprehensive Sample of User-Generated Content. - Jonathon Read; Dan Flickinger; Rebecca Dridan; Stephan Oepen; Lilja Øvrelid (LREC, 2012)

UiO1: Constituent-Based Discriminative Ranking for Negation Resolution. - Jonathon Read; Erik Velldal; Lilja Øvrelid; Stephan Oepen (*SEM@NAACL-HLT, 2012)

Speculation and Negation: Rules, Rankers, and the Role of Syntax. - Erik Velldal; Lilja Øvrelid; Jonathon Read; Stephan Oepen (Comput. Linguistics, 2012)

Survey on parsing three dependency representations for English. - Angelina Ivanova; Stephan Oepen; Lilja Øvrelid (ACL (Student Research Workshop), 2013)

Machine Learning for High-Quality Tokenization Replicating Variable Tokenization Schemes. - Murhaf Fares; Stephan Oepen; Yi Zhang 003 (CICLing (1), 2013)

Document Parsing: Towards Realistic Syntactic Analysis. - Rebecca Dridan; Stephan Oepen (IWPT, 2013)

On Different Approaches to Syntactic Analysis Into Bi-Lexical Dependencies. An Empirical Comparison of Direct, PCFG-Based, and HPSG-Based Parsers. - Angelina Ivanova; Stephan Oepen; Rebecca Dridan; Dan Flickinger; Lilja Øvrelid (IWPT, 2013)

Tidying up the Basement: A Tale of Large-Scale Parsing on National eInfrastructure. - Stephan Oepen (NODALIDA, 2013)

Simple and Accountable Segmentation of Marked-up Text. - Jonathon Read; Rebecca Dridan; Stephan Oepen (NODALIDA, 2013)

HPC-ready Language Analysis for Human Beings. - Nikolay A. Vazov; Emanuele Lapponi; Erik Velldal; Stephan Oepen (NODALIDA, 2013)

Simple Negation Scope Resolution through Deep Parsing: A Semantic Solution to a Semantic Problem. - Woodley Packard; Emily M. Bender; Jonathon Read; Stephan Oepen; Rebecca Dridan (ACL (1), 2014)

RDF Triple Stores and a Custom SPARQL Front-End for Indexing and Searching (Very) Large Semantic Networks. - Milen Kouylekov; Stephan Oepen (COLING (Demos), 2014)

Towards an Encyclopedia of Compositional Semantics: Documenting the Interface of the English Resource Grammar. - Dan Flickinger; Emily M. Bender; Stephan Oepen (LREC, 2014)

Semantic Technologies for Querying Linguistic Annotations: An Experiment Focusing on Graph-Structured Data. - Milen Kouylekov; Stephan Oepen (LREC, 2014)

Off-Road LAF: Encoding and Processing Annotations in NLP Workflows. - Emanuele Lapponi; Erik Velldal; Stephan Oepen; Rune Lain Knudsen (LREC, 2014)

In-House: An Ensemble of Pre-Existing Off-the-Shelf Parsers. - Yusuke Miyao; Stephan Oepen; Daniel Zeman (SemEval@COLING, 2014)

SemEval 2014 Task 8: Broad-Coverage Semantic Dependency Parsing. - Stephan Oepen; Marco Kuhlmann; Yusuke Miyao; Daniel Zeman; Dan Flickinger; Jan Hajic; Angelina Ivanova; Yi Zhang 003 (SemEval@COLING, 2014)

Semantic Dependency Graph Parsing Using Tree Approximations. - Zeljko Agic; Alexander Koller; Stephan Oepen (IWCS, 2015)

Layers of Interpretation: On Grammar and Compositionality. - Emily M. Bender; Dan Flickinger; Stephan Oepen; Woodley Packard; Ann A. Copestake (IWCS, 2015)

SemEval 2015 Task 18: Broad-Coverage Semantic Dependency Parsing. - Stephan Oepen; Marco Kuhlmann; Yusuke Miyao; Daniel Zeman; Silvie Cinková; Dan Flickinger; Jan Hajic; Zdenka Uresová (SemEval@NAACL-HLT, 2015)

OPT: Oslo-Potsdam-Teesside. Pipelining Rules, Rankers, and Classifier Ensembles for Shallow Discourse Parsing. - Stephan Oepen; Jonathon Read; Tatjana Scheffler; Uladzimir Sidarenka; Manfred Stede; Erik Velldal; Lilja Øvrelid (CoNLL Shared Task, 2016)

Towards Comparability of Linguistic Graph Banks for Semantic Parsing. - Stephan Oepen; Marco Kuhlmann; Yusuke Miyao; Daniel Zeman; Silvie Cinková; Dan Flickinger; Jan Hajic; Angelina Ivanova; Zdenka Uresová (LREC, 2016)

Towards a Catalogue of Linguistic Graph Banks. - Marco Kuhlmann; Stephan Oepen (Comput. Linguistics, 2016)

On Different Approaches to Syntactic Analysis Into Bi-Lexical Dependencies An Empirical Comparison of Direct, PCFG-Based, and HPSG-Based Parsers. - Angelina Ivanova; Stephan Oepen; Rebecca Dridan; Dan Flickinger; Lilja Øvrelid; Emanuele Lapponi (J. Lang. Model., 2016)

Representation and Interchange of Linguistic Annotation. An In-Depth, Side-by-Side Comparison of Three Designs. - Richard Eckart de Castilho; Nancy Ide; Emanuele Lapponi; Stephan Oepen; Keith Suderman; Erik Velldal; Marc Verhagen (LAW@ACL, 2017)

Word vectors, reuse, and replicability: Towards a community repository of large-text resources. - Murhaf Fares; Andrey Kutuzov; Stephan Oepen; Erik Velldal (NODALIDA, 2017)

The 2018 Shared Task on Extrinsic Parser Evaluation: On the Downstream Utility of English Universal Dependency Parsers. - Murhaf Fares; Stephan Oepen; Lilja Øvrelid; Jari Björne; Richard Johansson (CoNLL Shared Task (2), 2018)

Transfer and Multi-Task Learning for Noun-Noun Compound Interpretation. - Murhaf Fares; Stephan Oepen; Erik Velldal (EMNLP, 2018)

The Talk of Norway: a richly annotated corpus of the Norwegian parliament, 1998-2016. - Emanuele Lapponi; Martin G. Søyland; Erik Velldal; Stephan Oepen (Lang. Resour. Evaluation, 2018)

Graph-Based Meaning Representations: Design and Processing. - Alexander Koller; Stephan Oepen; Weiwei Sun (ACL (4), 2019)

MRP 2019: Cross-Framework Meaning Representation Parsing. - Stephan Oepen; Omri Abend; Jan Hajic; Daniel Hershcovich; Marco Kuhlmann; Tim O'Gorman; Nianwen Xue; Jayeol Chun; Milan Straka; Zdenka Uresová (CoNLL Shared Task, 2019)

The ERG at MRP 2019: Radically Compositional Semantic Dependencies. - Stephan Oepen; Dan Flickinger (CoNLL Shared Task, 2019)

DRS at MRP 2020: Dressing up Discourse Representation Structures as Graphs. - Lasha Abzianidze; Johan Bos; Stephan Oepen (CoNLL Shared Task, 2020)

MRP 2020: The Second Shared Task on Cross-Framework and Cross-Lingual Meaning Representation Parsing. - Stephan Oepen; Omri Abend; Lasha Abzianidze; Johan Bos; Jan Hajic; Daniel Hershcovich; Bin Li 052; Tim O'Gorman; Nianwen Xue; Daniel Zeman (CoNLL Shared Task, 2020)

End-to-End Negation Resolution as Graph Parsing. - Robin Kurtz; Stephan Oepen; Marco Kuhlmann (IWPT 2020, 2020)

A Tale of Three Parsers: Towards Diagnostic Evaluation for Meaning Representation Parsing. - Maja Buljan; Joakim Nivre; Stephan Oepen; Lilja Øvrelid (LREC, 2020)

Structured Sentiment Analysis as Dependency Graph Parsing. - Jeremy Barnes 001; Robin Kurtz; Stephan Oepen; Lilja Øvrelid; Erik Velldal (ACL/IJCNLP (1), 2021)

Large-Scale Contextualised Language Modelling for Norwegian. - Andrey Kutuzov; Jeremy Barnes 001; Erik Velldal; Lilja Øvrelid; Stephan Oepen (NoDaLiDa, 2021)

Neural Argumentation Mining on Essays and Microtexts with Contextualized Word Embeddings (short paper). - Mohammad Yeghaneh Abkenar; Manfred Stede; Stephan Oepen (SwissText, 2021)

Collaboration in the IETF: an initial analysis of two decades in email discussions. - Michael Welzl; Stephan Oepen; Cezary Jaskula; Carsten Griwodz; Safiqul Islam (Comput. Commun. Rev., 2021)

Designing a Uniform Meaning Representation for Natural Language Processing. - Jens E. L. Van Gysel; Meagan Vigus; Jayeol Chun; Kenneth Lai; Sarah R. Moeller; Jiarui Yao; Tim O'Gorman; Andrew Cowell; William Croft 001; Chu-Ren Huang; Jan Hajic; James H. Martin; et al. (Künstliche Intell., 2021)

Direct parsing to sentiment graphs. - David Samuel; Jeremy Barnes 001; Robin Kurtz; Stephan Oepen; Lilja Øvrelid; Erik Velldal (ACL (2), 2022)

A tale of four parsers: methodological reflections on diagnostic evaluation and in-depth error analysis for meaning representation parsing. - Maja Buljan; Joakim Nivre; Stephan Oepen; Lilja Øvrelid (Lang. Resour. Evaluation, 2022)

A New Massive Multilingual Dataset for High-Performance Language Technologies. - Ona de Gibert; Graeme Nail; Nikolay Arefyev; Marta Bañón; Jelmer van der Linde; Shaoxiong Ji; Jaume Zaragoza-Bernabeu; Mikko Aulamo; Gema Ramírez-Sánchez; Andrey Kutuzov; Sampo Pyysalo; Stephan Oepen; et al. (LREC/COLING, 2024)

The Impact of Copyrighted Material on Large Language Models: A Norwegian Perspective. - Javier de la Rosa 001; Vladislav Mikhailov; Lemei Zhang; Freddy Wetjen; David Samuel; Peng Liu 025; Rolv-Arild Braaten; Petter Mæhlum; Magnus Breder Birkenes; Andrey Kutuzov; Tita Ranveig Enstad; Svein Arne Brygfjeld; et al. (CoRR, 2024)

An Expanded Massive Multilingual Dataset for High-Performance Language Technologies (HPLT). - Laurie Burchell; Ona De Gibert Bonet; Nikolay Arefyev; Mikko Aulamo; Marta Bañón; Pinzhen Chen; Mariia Fedorova; Liane Guillou; Barry Haddow; Jan Hajic; Jindrich Helcl; Erik Henriksson; et al. (ACL (1), 2025)

An Expanded Massive Multilingual Dataset for High-Performance Language Technologies. - Laurie Burchell; Ona de Gibert; Nikolay Arefyev; Mikko Aulamo; Marta Bañón; Pinzhen Chen; Mariia Fedorova; Liane Guillou; Barry Haddow; Jan Hajic; Jindrich Helcl; Erik Henriksson; et al. (CoRR, 2025)