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@InProceedings{Brants_et_al:2002,
      AUTHOR = {Brants, Sabine and Dipper, Stefanie and Hansen, Silvia and Lezius, Wolfgang and Smith, George},
      TITLE = {The TIGER Treebank},
      YEAR = {2002},
      BOOKTITLE = {Proceedings of the Workshop on Treebanks and Linguistic Theories, September 20-21},
      ADDRESS = {Sozopol, Bulgaria},
      URL = {https://www.coli.uni-saarland.de/~sabine/tigertreebank.pdf},
      ABSTRACT = {This paper reports on the TIGER Treebank, a corpus of currently 35.000 syntactically annotated German newspaper sentences. We describe what kind of information is encoded in the treebank and introduce the different representation formats that are used for the annotation and exploitation of the treebank. We explain the different methods used for the annotation: interactive annotation, using the tool (em Annotate), and LFG parsing. Furthermore, we give an account of the annotation scheme used for the TIGER treebank. This scheme is an extended and improved version of the NEGRA annotation scheme and we illustrate in detail the linguistic extensions that were made concerning the annotation in the TIGER project. The main differences are concerned with coordination, verb-subcategorization, expletives as well as proper nouns. In addition, the paper also presents the query tool TIGERSearch that was developed in the project to exploit the treebank in an adequate way. We describe the query language which was designed to facilitate a simple formulation of complex queries; furthermore, we shortly introduce TIGERin, a graphical user interface for query input. The paper concludes with a summary and some directions for future work.},
      ANNOTE = {COLIURL : Brants:2002:TT.pdf}
}

@InProceedings{Brants_Hansen:2002,
      AUTHOR = {Brants, Sabine and Hansen, Silvia},
      TITLE = {Developments in the TIGER Annotation Scheme and their Realization in the Corpus},
      YEAR = {2002},
      BOOKTITLE = {Proceedings of the 3rd International Conference on Language Resources and Evaluation (LREC-2002), May 29-31},
      ADDRESS = {Las Palmas de Gran Canaria, Spain},
      URL = {https://www.coli.uni-saarland.de/~sabine/brants-hansen.pdf},
      ABSTRACT = {This paper presents the annotation of the German TIGER Treebank. First, issues concerning the annotation, representation as well as querying of the treebank are discussed. Within this context, the annotation tool ANNOTATE, the export and XML formats of the TIGER Treebank and the TIGER search tool are briefly introduced. Secondly, the developments of the TIGER annotation scheme and their realization in the corpus are introduced focussing on the differences between the underlying NEGRA annotation scheme and the further developed TIGER annotation scheme. The main differences are concerned with verb-subcategorization, coordination, appositions and parentheses as well as proper nouns. Thirdly, the annotation scheme is assessed through an evaluation and a problem discussion of the above mentioned changes. For this purpose, inter- annotator agreement in the TIGER project has been analyzed focussing on exactly these changes. This analysis shows where the annotators' decision problems are. These difficulties are discussed in greater detail on the basis of annotation examples. The paper concludes with some suggestions for the improvement of the TIGER annotation scheme.},
      ANNOTE = {COLIURL : Brants:2002:DTA.pdf}
}