TY - JOUR A1 - Chiarcos, Christian A1 - Dipper, Stefanie A1 - Götze, Michael A1 - Leser, Ulf A1 - Lüdeling, Anke A1 - Ritz, Julia A1 - Stede, Manfred T1 - A flexible framework for integrating annotations from different tools and tag sets N2 - We present a general framework for integrating annotations from different tools and tag sets. When annotating corpora at multiple linguistic levels, annotators may use different expert tools for different phenomena or types of annotation. These tools employ different data models and accompanying approaches to visualization, and they produce different output formats. For the purposes of uniformly processing these outputs, we developed a pivot format called PAULA, along with converters to and from tool formats. Different annotations are not only integrated at the level of data format, but are also joined on the level of conceptual representation. For this purpose, we introduce OLiA, an ontology of linguistic annotations that mediates between alternative tag sets that cover the same class of linguistic phenomena. All components are integrated in the linguistic information system ANNIS : Annotation tool output is converted to the pivot format PAULA and read into a database where the data can be visualized, queried, and evaluated across multiple layers. For cross-tag set querying and statistical evaluation, ANNIS uses the ontology of linguistic annotations. Finally, ANNIS is also tied to a machine learning component for semiautomatic annotation. Y1 - 2008 UR - http://www.atala.org/A-Flexible-Framework-for SN - 1248-9433 ER - TY - JOUR A1 - Chiarcos, Christian A1 - Fiedler, Ines A1 - Grubic, Mira A1 - Hartmann, Katharina A1 - Ritz, Julia A1 - Schwarz, Anne A1 - Zeldes, Amir A1 - Zimmermann, Malte T1 - Information structure in African languages corpora and tools JF - Language resources and evaluation N2 - In this paper, we describe tools and resources for the study of African languages developed at the Collaborative Research Centre 632 "Information Structure". These include deeply annotated data collections of 25 sub-Saharan languages that are described together with their annotation scheme, as well as the corpus tool ANNIS, which provides unified access to a broad variety of annotations created with a range of different tools. With the application of ANNIS to several African data collections, we illustrate its suitability for the purpose of language documentation, distributed access, and the creation of data archives. KW - African language resources KW - Pragmatics KW - Corpus search infrastructure Y1 - 2011 U6 - https://doi.org/10.1007/s10579-011-9153-0 SN - 1574-020X VL - 45 IS - 3 SP - 361 EP - 374 PB - Springer CY - Dordrecht ER - TY - JOUR A1 - Chiarcos, Christian A1 - Ritz, Julia A1 - Stede, Manfred T1 - By all these lovely tokens... Merging conflicting tokenizations JF - Language resources and evaluation N2 - Given the contemporary trend to modular NLP architectures and multiple annotation frameworks, the existence of concurrent tokenizations of the same text represents a pervasive problem in everyday's NLP practice and poses a non-trivial theoretical problem to the integration of linguistic annotations and their interpretability in general. This paper describes a solution for integrating different tokenizations using a standoff XML format, and discusses the consequences from a corpus-linguistic perspective. KW - Linguistic annotation KW - Multi-layer annotation KW - Conflicting tokenizations KW - Tokenization alignment KW - Corpus linguistics Y1 - 2012 U6 - https://doi.org/10.1007/s10579-011-9161-0 SN - 1574-020X VL - 46 IS - 1 SP - 53 EP - 74 PB - Springer CY - Dordrecht ER - TY - THES A1 - Ritz, Julia T1 - Discourse-givenness of noun phrases : theoretical and computational models T1 - Diskursgegebenheit von Nominalphrasen : theoretische und komputationelle Modelle N2 - This thesis gives formal definitions of discourse-givenness, coreference and reference, and reports on experiments with computational models of discourse-givenness of noun phrases for English and German. Definitions are based on Bach's (1987) work on reference, Kibble and van Deemter's (2000) work on coreference, and Kamp and Reyle's Discourse Representation Theory (1993). For the experiments, the following corpora with coreference annotation were used: MUC-7, OntoNotes and ARRAU for Englisch, and TueBa-D/Z for German. As for classification algorithms, they cover J48 decision trees, the rule based learner Ripper, and linear support vector machines. New features are suggested, representing the noun phrase's specificity as well as its context, which lead to a significant improvement of classification quality. N2 - Die vorliegende Arbeit gibt formale Definitionen der Konzepte Diskursgegebenheit, Koreferenz und Referenz. Zudem wird über Experimente berichtet, Nominalphrasen im Deutschen und Englischen hinsichtlich ihrer Diskursgegebenheit zu klassifizieren. Die Definitionen basieren auf Arbeiten von Bach (1987) zu Referenz, Kibble und van Deemter (2000) zu Koreferenz und der Diskursrepräsentationstheorie (Kamp und Reyle, 1993). In den Experimenten wurden die koreferenzannotierten Korpora MUC-7, OntoNotes und ARRAU (Englisch) und TüBa-D/Z (Deutsch) verwendet. Sie umfassen die Klassifikationsalgorithmen J48 (Entscheidungsbäume), Ripper (regelbasiertes Lernen) und lineare Support Vector Machines. Mehrere neue Klassifikationsmerkmale werden vorgeschlagen, die die Spezifizität der Nominalphrase messen, sowie ihren Kontext abbilden. Mit Hilfe dieser Merkmale kann eine signifikante Verbesserung der Klassifikation erreicht werden. KW - Diskursgegebenheit KW - Klassifikator KW - Koreferenz KW - Kontext KW - tf-idf KW - discourse-givenness KW - classifier KW - coreference KW - context KW - tf-idf Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-70818 ER - TY - JOUR A1 - Lüdeling, Anke A1 - Ritz, Julia A1 - Stede, Manfred A1 - Zeldes, Amir T1 - Corpus Linguistics and Information Structure Research JF - The Oxford handbook of information structure Y1 - 2016 SN - 978-0-19-964267-0 SP - 599 EP - 617 PB - Oxford University Press CY - Oxford ER -