ARTICLES IN REFEREED CONFERENCES AND WORKSHOPS

John Bateman, Judy Delin, Renate Henschel. 2002.
A brief introduction to the GeM annotation schema for complex document layout. In: Proceedings of the 2nd Workshop on NLP and XML. Taipei. (pdf)

Renate Henschel, John Bateman. 2002.
Automatic Genre-Driven Layout Generation. In: Proceedings of the KONVENS-2002 Conference. Saarbrücken, Germany. (ps) (pdf)

It has long been recognized in natural language generation that, for generated texts to be realistic, they will have to consist of more than simple sets of strings separated by full-stops. A common assumption in this work has been that the form of information presentation straightforwardly follows the rhetorical structure. More recently, this assumption has been shown to be too simple to account for naturally occuring document design: not only the document content, but also the visual appearance of the presented information, serves to achieve the communicative goal of the author. The design of this visual appearance therefore needs to be controlled more flexibly. In this paper, we present a general algorithm for layout production which, dependent on features of the chosen genre, transforms a rhetorical structure into a not necessarily isomorphic layout structure. The algorithm has been implemented as the XSL stylesheet gemLayout. We illustrate gemLayout in two different genres drawn from a growing corpus of multimodal documents, bird guides and instruction manuals.

Hua Cheng, Massimo Poesio, Renate Henschel, Chris Mellish. 2001.
Corpus-based NP Modifier Generation. In: Proceedings of the NAACL. Pittsburgh, June. (ps) (pdf)

Renate Henschel, Hua Cheng, Massimo Poesio. 2000.
Pronominalization revisited. In: Proceedings of COLING 2000. Saarbrücken, Germany. (ps) (pdf)

Pronominalization has been related to the idea of a local focus -- a set of discourse entities in the speaker's centre of attention, for example in Gundel etal's givenness hierarchy or in centering theory. Gundel etal distinguish the cognitive status of being ``in focus'' as the precondition for pronominalization. Centering theory assumes a high correlation between its local focus (the backward-looking centre) and pronominalization. Both accounts say that the determination of the focus depends on syntactic as well as pragmatic factors, but have not been able to pin those factors down.
In this paper, we uncover the major factors which determine the focus set in descriptive texts. This new focus definition has been evaluated with respect to two corpora: museum exhibit labels, and newspaper articles. It provides an operationalizable basis for pronoun production, and has been implemented as the reusable module gnome-np. The algorithm behind gnome-np is compared with the most recent pronoun generation algorithm of McCoy and Strube (1999).

Massimo Poesio, Hua Cheng, Renate Henschel, Janet Hitzeman, Rodger Kibble, and Rosemary Stevenson. 2000.
Specifying the Parameters of Centering Theory: a Corpus-Based Evaluation using Text from Application-Oriented Domains. In: Proceedings of the 38th Annual Meeting of the ACL. Hong Kong, October. (ps) (pdf)

Massimo Poesio, Renate Henschel, Janet Hitzeman, Rodger Kibble, Shane Montague, Kees van Deemter. 1999.
Towards an annotation scheme for noun phrase generation. In: Proceedings of the EACL workshop on linguistically interpreted corpora. Bergen, Norway. (ps)

Renate Henschel, John Bateman. 1997.
Application-driven automatic subgrammar extraction. In: Proceedings of the Workshop ``Computational Environments for Grammar Development and Linguistic Engineering (ENVGRAM)'' held in conjunction with the 35th Annual Meeting of the ACL and 8th Conference of the EACL. Madrid, Spain.

The space and run-time requirements of broad coverage grammars appear for many applications unreasonably large in relation to the relative simplicity of the task at hand. On the other hand, handcrafted development of application-dependent grammars is in danger of duplicating work which is then difficult to re-use in other contexts of application. To overcome this problem, we present in this paper a procedure for the automatic extraction of application-tuned consistent subgrammars from proved large-scale generation grammars. The procedure has been implemented for large-scale systemic grammars and builds on the formal equivalence between systemic grammars and typed unification based grammars. Its evaluation for the generation of encyclopedia entries is described and directions of future development, applicability, and extensions are discussed.

Renate Henschel. 1995.
Traversing the Labyrinth of Feature Logics for a Declarative Implementation of Large-Scale Systemic Grammars. In: Proceedings of the CLNLP Workshop. South Queensferry, UK. (ps)

Although systemic grammars are represented declaratively (as system networks), all successful implementations to date have been committed to the generation direction. The aim of this paper is, therefore, to re-represent systemic grammar resources in a typed feature logic in order to make it reusable in generation and analysis applications on the one hand, and to clarify the theoretical status of the mechanisms used in systemic grammar on the other hand. Three such representations in the feature logic formalisms ALE, TFS and CUF are compared. Implementations in TFS and CUF are given.

Renate Henschel. 1994.
Auf der Suche nach einem Deduktionssystem für systemische Grammatiken. In: Proceedings of the DGfS/CL-94. Hamburg, Germany. (ps)

Renate Henschel, John Bateman. 1994.
The merged Upper Model: a linguistic ontology for German and English. In: Proceedings of COLING 1994. Kyoto, Japan. (ps)

Bianka Buschbeck, Renate Henschel, Iris Höser, Gerda Klimonow, Andreas Küstner, Ingrid Starke. 1991.
Limits of a sentence based procedural approach for aspect choice in German-Russian MT. In: Proceedings of EACL . Berlin, Germany.

Renate Henschel. 1991.
The Morphological Principle. A Proposal for Treating Russian Morphology within an HPSG-Framework. In: Thomas Christaller (eds.) Proceedings of the German Workshop of Artificial Intelligence (GWAI-91). pp. 116-125. Bonn, Germany.

In this paper a new declarative approach for treating morphology is proposed. Inflectional morphology is integrated in the uniform HPSG grammar representation formalism using principles, rules and a lexicon. Lexical rules are not necessary furthermore because they are replaced by a new principle and new types of lexicon entries. This enables us to abandon an extra implementation for lexical rules. The main exemplification is taken from Russian verb and noun inflection where a remarkable removal of redundancy has been achieved.

Bianka Buschbeck, Renate Henschel, Iris Höser, Gerda Klimonow, Andreas Küstner, Ingrid Starke. 1990.
VIRTEX - a German-Russian Translation Experiment. In: (eds.) Proceedings of COLING 1990. Helsinki, Finland.

RESEARCH ARTICLES IN JOURNALS AND BOOKS

Renate Henschel. 1994.
Declarative Representation and Processing of Systemic Grammars. In: Carlos Martin-Vide(eds.) Current Issues in Mathematical Linguistics. Elsevier Science Publisher B.V., Amsterdam. (ps)

Renate Henschel. 1993.
Merging the English and the German Upper Model. In: Arbeitspapiere der GMD. No. 848. (ps)

A detailed comparison of the Penman Upper Model and the KOMET German Upper Model is carried out in order to construct a new Merged Upper Model capable of serving as the ideational basis for automatic text generation in both English and German. Previously proposed criteria for conducting such a merge are expanded on and evaluated. It is established that no (semi-)automatic merging of such knowledge sources can be expected to produce a reasonable result and that detailed comparison of the kind reported is essential. The result of the merge is now being used within the KOMET Project as the basis for generation in English, German and Dutch.

Renate Henschel, Iris Höser. 1991.
Lexical and Structural Transfer with the Graph Rewriting System GRACOLI. In: Sprache und Datenverarbeitung. No.15.

Renate Henschel. 1986.
Das Graphen-Transformationssystem GRACOLI. In: Mitteilungen zur automatischen Sprachverarbeitung. ZISW, Berlin, Germany.

UNPUBLISHED ARTICLES

Renate Henschel. 1997.
Compiling Systemic Grammars into Feature Logic Systems. (ps)

Although systemic grammars are represented declaratively (as system networks), the most important implementations to date have been committed to the generation direction, and seem more or less incomprehensible for the researcher not familiar with systemic descriptions and software. The aim of this paper is, therefore, to re-represent systemic grammar resources in a standard typed feature logic in order (1) to clarify theoretically the relation between systemic grammar and state-of-the-art feature logics, and (2) to serve as point of departure for bidirectional processing of systemic grammar. Four such representations in the feature logic formalisms ALE, TFS, CUF and TDL are compared. Bidirectional processing in TFS and CUF based on type deduction are discussed.