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Dieser Beitrag setzt sich mit Gesprächskorpora als einem besonderen Typus von Korpora gesprochener Sprache auseinander. Es werden zunächst wesentliche Eigenschaften solcher Korpora herausgearbeitet und einige der wichtigsten deutschsprachigen Gesprächskorpora vorgestellt. Der zweite Teil des Beitrags setzt sich dann mit dem Forschungs- und Lehrkorpus Gesprochenes Deutsch (FOLK) auseinander. FOLK hat sich zum Ziel gesetzt, ein wissenschaftsöffentliches Korpus von Interaktionsdaten aufzubauen, das methodisch und technisch dem aktuellen Forschungsstand entspricht. Die Herausforderungen, die sich beim Aufbau von FOLK in methodischer und korpustechnologischer Hinsicht stellen, werden in abschließenden Abschnitt diskutiert.
This article discusses questions concerning the creation, annotation and sharing of spoken language corpora. We use the Hamburg Map Task Corpus (HAMATAC), a small corpus in which advanced learners of German were recorded solving a map task, as an example to illustrate our main points. We first give an overview of the corpus creation and annotation process including recording, metadata documentation, transcription and semi-automatic annotation of the data. We then discuss the manual annotation of disfluencies as an example case in which many of the typical and challenging problems for data reuse – in particular the reliability of interpretative annotations – are revealed.
Einleitung
(2018)
Einleitung
(2023)
Einleitung
(2023)
Der Beitrag illustriert die Nutzung des Forschungs- und Lehrkorpus Gesprochenes Deutsch (FOLK) für interaktionslinguistische Fragestellungen anhand einer exemplarischen Studie. Zunächst werden die Stratifikation (Datenkomposition) des Korpus, das zugrundeliegende Datenmodell und dessen Annotationsebenen sowie Typen von Untersuchungsinteressen vorgestellt, für die das Korpus nutzbar ist. Im Hauptteil wird Schritt für Schritt anhand einer Studie zur Verwendung des Formats was heißt X in der sozialen Interaktion gezeigt, wie mit FOLK relevante Daten gefunden und analysiert werden können. Abschließend weisen wir auf einige Vorsichtsmaßnahmen bei der Benutzung des Korpus hin.
This paper is about the workflow for construction and dissemination of FOLK (Forschungs - und Lehrkorpus Gesprochenes Deutsch – Research and Teaching Corpus of Spoken German), a large corpus of authentic spoken interaction data, recorded on audio and video. Section 2 describes in detail the tools used in the individual steps of transcription, anonymization, orthographic normalization, lemmatization and POS tagging of the data, as well as some utilities used for corpus management. Section 3 deals with the DGD (Datenbank für Gesprochenes Deutsch - Database of Spoken German) as a tool for distributing completed data sets and making them available for qualitative and quantitative analysis. In section 4, some plans for further development are sketched.
Die „Datenbank für Gesprochenes Deutsch“ (DGD2) ist ein Korpusmanagementsystem im Archiv für Gesprochenes Deutsch (AGD) am Institut für Deutsche Sprache. Über die DGD2 werden Teilbestände des Archivs (Audioaufnahmen gesprochener Sprache, sowie zugehörige Metadaten, Transkripte und Zusatzmaterialien) der wissenschaftlichen Öffentlichkeit online zur Verfügung gestellt. Sie enthält derzeit knapp 9000 Datensätze aus 18 Korpora. Die DGD2 ist das Nachfolgesystem der älteren „Datenbank Gesprochenes Deutsch“ (ab hier: DGD1, siehe Fiehler/Wagener 2005). Da die DGD1 aufgrund ihrer technischen Realisierung mittelfristig kaum wartbar und erweiterbar ist, wurde die DGD2 auf eine neue technische Basis gestellt und stellt insofern keine direkte Weiterentwicklung der DGD1 dar, sondern eine Neuentwicklung, die freilich einen Großteil der Datenbestände und Funktionalität mit der DGD1 teilt. Die DGD2 wurde der Öffentlichkeit erstmals in einem Beta-Release im Februar 2012 zugänglich gemacht. In diesem Beitrag stellen wir die Datenbestände, die technische Realisierung sowie die Funktionalität des ersten offiziellen Release der DGD2 vom Dezember 2012 vor. Wir schließen mit einem Ausblick auf geplante Weiterentwicklungen.
The newest generation of speech technology caused a huge increase of audio-visual data nowadays being enhanced with orthographic transcripts such as in automatic subtitling in online platforms. Research data centers and archives contain a range of new and historical data, which are currently only partially transcribed and therefore only partially accessible for systematic querying. Automatic Speech Recognition (ASR) is one option of making that data accessible. This paper tests the usability of a state-of-the-art ASR-System on a historical (from the 1960s), but regionally balanced corpus of spoken German, and a relatively new corpus (from 2012) recorded in a narrow area. We observed a regional bias of the ASR-System with higher recognition scores for the north of Germany vs. lower scores for the south. A detailed analysis of the narrow region data revealed – despite relatively high ASR-confidence – some specific word errors due to a lack of regional adaptation. These findings need to be considered in decisions on further data processing and the curation of corpora, e.g. correcting transcripts or transcribing from scratch. Such geography-dependent analyses can also have the potential for ASR-development to make targeted data selection for training/adaptation and to increase the sensitivity towards varieties of pluricentric languages.
The newest generation of speech technology caused a huge increase of audio-visual data nowadays being enhanced with orthographic transcripts such as in automatic subtitling in online platforms. Research data centers and archives contain a range of new and historical data, which are currently only partially transcribed and therefore only partially accessible for systematic querying. Automatic Speech Recognition (ASR) is one option of making that data accessible. This paper tests the usability of a state-of-the-art ASR-System on a historical (from the 1960s), but regionally balanced corpus of spoken German, and a relatively new corpus (from 2012) recorded in a narrow area. We observed a regional bias of the ASR-System with higher recognition scores for the north of Germany vs. lower scores for the south. A detailed analysis of the narrow region data revealed – despite relatively high ASR-confidence – some specific word errors due to a lack of regional adaptation. These findings need to be considered in decisions on further data processing and the curation of corpora, e.g. correcting transcripts or transcribing from scratch. Such geography-dependent analyses can also have the potential for ASR-development to make targeted data selection for training/adaptation and to increase the sensitivity towards varieties of pluricentric languages.
Die Guidelines sind eine Erweiterung des STTS (Schiller et al. 1999) für die Annotation von Transkripten gesprochener Sprache. Dieses Tagset basiert auf der Annotation des FOLK-Korpus des IDS Mannheim (Schmidt 2014) und es wurde gegenüber dem STTS erweitert in Hinblick auf typisch gesprochensprachliche Phänomene bzw. Eigenheiten der Transkription derselben. Es entstand im Rahmen des Dissertationsprojekts „POS für(s) FOLK – Entwicklung eines automatisierten Part-of-Speech-Tagging von spontansprachlichen Daten“ (Westpfahl 2017 (i.V.)).
We present web services which implement a workflow for transcripts of spoken language following the TEI guidelines, in particular ISO 24624:2016 “Language resource management – Transcription of spoken language”. The web services are available at our website and will be available via the CLARIN infrastructure, including the Virtual Language Observatory and WebLicht.
This paper addresses long-term archival for large corpora. Three aspects specific to language resources are focused, namely (1) the removal of resources for legal reasons, (2) versioning of (unchanged) objects in constantly growing resources, especially where objects can be part of multiple releases but also part of different collections, and (3) the conversion of data to new formats for digital preservation. It is motivated why language resources may have to be changed, and why formats may need to be converted. As a solution, the use of an intermediate proxy object called a signpost is suggested. The approach will be exemplified with respect to the corpora of the Leibniz Institute for the German Language in Mannheim, namely the German Reference Corpus (DeReKo) and the Archive for Spoken German (AGD).
As a part of the ZuMult-project, we are currently modelling a backend architecture that should provide query access to corpora from the Archive of Spoken German (AGD) at the Leibniz-Institute for the German Language (IDS). We are exploring how to reuse existing search engine frameworks providing full text indices and allowing to query corpora by one of the corpus query languages (QLs) established and actively used in the corpus research community. For this purpose, we tested MTAS - an open source Lucene-based search engine for querying on text with multilevel annotations. We applied MTAS on three oral corpora stored in the TEI-based ISO standard for transcriptions of spoken language (ISO 24624:2016). These corpora differ from the corpus data that MTAS was developed for, because they include interactions with two and more speakers and are enriched, inter alia, with timeline-based annotations. In this contribution, we report our test results and address issues that arise when search frameworks originally developed for querying written corpora are being transferred into the field of spoken language.
This paper presents experiments on sentence boundary detection in transcripts of spoken dialogues. Segmenting spoken language into sentence-like units is a challenging task, due to disfluencies, ungrammatical or fragmented structures and the lack of punctuation. In addition, one of the main bottlenecks for many NLP applications for spoken language is the small size of the training data, as the transcription and annotation of spoken language is by far more time-consuming and labour-intensive than processing written language. We therefore investigate the benefits of data expansion and transfer learning and test different ML architectures for this task. Our results show that data expansion is not straightforward and even data from the same domain does not always improve results. They also highlight the importance of modelling, i.e. of finding the best architecture and data representation for the task at hand. For the detection of boundaries in spoken language transcripts, we achieve a substantial improvement when framing the boundary detection problem as a sentence pair classification task, as compared to a sequence tagging approach.
This paper presents the prototype of a lexicographic resource for spoken German in interaction, which was conceived within the framework of the LeGeDe-project (LeGeDe=Lexik des gesprochenen Deutsch). First of all, it summarizes the theoretical and methodological approaches that were used for the initial planning of the resource. The headword candidates were selected by analyzing corpus-based data. Therefore, the data of two corpora (written and spoken German) were compared with quantitative methods. The information that was gathered on the selected headword candidates can be assigned to two different sections: meanings and functions in interaction.
Additionally, two studies on the expectations of future users towards the resource were carried out. The results of these two studies were also taken into account in the development of the prototype. Focusing on the presentation of the resource’s content, the paper shows both the different lexicographical information in selected dictionary entries, and the information offered by the provided hyperlinks and external texts. As a conclusion, it summarizes the most important innovative aspects that were specifically developed for the implementation of such a resource.
This presentation introduces a new collaborative project: the International Comparable Corpus (ICC) (https://korpus.cz/icc), to be compiled from European national, standard(ised) languages, using the protocols for text categories and their quantities of texts in the International Corpus of English (ICE).