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The 2014 issue of KONVENS is even more a forum for exchange: its main topic is the interaction between Computational Linguistics and Information Science, and the synergies such interaction, cooperation and integrated views can produce. This topic at the crossroads of different research traditions which deal with natural language as a container of knowledge, and with methods to extract and manage knowledge that is linguistically represented is close to the heart of many researchers at the Institut für Informationswissenschaft und Sprachtechnologie of Universität Hildesheim: it has long been one of the institute’s research topics, and it has received even more attention over the last few years. The main conference papers deal with this topic from different points of view, involving flat as well as deep representations, automatic methods targeting annotation and hybrid symbolic and statistical processing, as well as new Machine Learning-based approaches, but also the creation of language resources for both machines and humans, and methods for testing the latter to optimize their human-machine interaction properties. In line with the general topic, KONVENS-2014 focuses on areas of research which involve this cooperation of information science and computational linguistics: for example learning-based approaches, (cross-lingual) Information Retrieval, Sentiment Analysis, paraphrasing or dictionary and corpus creation, management and usability.
In 2010, ISO published a standard for syntactic annotation, ISO 24615:2010 (SynAF). Back then, the document specified a comprehensive reference model for the representation of syntactic annotations, but no accompanying XML serialisation. ISO’s subcommittee on language resource management (ISO TC 37/SC 4) is working on making the SynAF serialisation ISOTiger an additional part of the standard. This contribution addresses the current state of development of ISOTiger, along with a number of open issues on which we are seeking community feedback in order to ensure that ISOTiger becomes a useful extension to the SynAF reference model.
So far, there have been few descriptions on creating structures capable of storing lexicographic data, ISO 24613:2008 being one of the latest. Another one is by Spohr (2012), who designs a multifunctional lexical resource which is able to store data of different types of dictionaries in a user-oriented way. Technically, his design is based on the principle of a hierarchical XML/OWL (eXtensible Markup Language/Web Ontology Language) representation model. This article follows another route in describing a model based on entities and relations between them; MySQL (usually referred to as: Structured Query Language) describes a database system of tables containing data and definitions of relations between them. The model was developed in the context of the project "Scientific eLexicography for Africa" and the lexicographic database to be built thereof will be implemented with MySQL. The principles of the ISO model and of Spohr's model are adhered to with one major difference in the implementation strategy: we do not place the lemma in the centre of attention, but the sense description — all other elements, including the lemma, depend on the sense description. This article also describes the contained lexicographic data sets and how they have been collected from different sources. As our aim is to compile several prototypical internet dictionaries (a monolingual Northern Sotho dictionary, a bilingual learners' Xhosa–English dictionary and a bilingual Zulu–English dictionary), we describe the necessary microstructural elements for each of them and which principles we adhere to when designing different ways of accessing them. We plan to make the model and the (empty) database with all graphical user interfaces that have been developed, freely available by mid-2015.
This paper describes a first version of an integrated e-dictionary translating possessive constructions from English to Zulu. Zulu possessive constructions are difficult to learn for non-mother tongue speakers. When translating from English into Zulu, a speaker needs to be acquainted with the nominal classification of nouns indicating possession and possessor. Furthermore, (s)he needs to be informed about the morpho-syntactic rules associated with certain combinations of noun classes. Lastly, knowledge of morpho-phonetic changes is also required, because these influence the orthography of the output word forms. Our approach is a novel one in that we combine e-lexicography and natural language processing by developing a (web) interface supporting learners, as well as other users of the dictionary to produce Zulu possessive constructions. The final dictionary that we intend to develop will contain several thousand nouns which users can combine as they wish. It will also translate single words and frequently used multiword expressions, and allow users to test their own translations. On request, information about the morpho-syntactic and morpho-phonetic rules applied by the system are displayed together with the translation. Our approach follows the function theory: the dictionary supports users in text production, at the same time fulfilling a cognitive function.
Post-field syntax and focalization strategies in National Socialist political speech. This paper deals with a syntactic feature of spoken German, i.e. post-field filling, and with its occurrence in one specific discourse type – political speech – throughout one significant period of the history of German language – National Socialism. This paper aims at pointing out the communicative pragmatic function of right dislocation in the NS political speech on the basis of some collected examples.
Alors que de nombreuses études en analyse conversationnelle se sont intéressées à la manière dont des locuteurs co-construisent un tour de parole (notamment sur le plan syntaxique et prosodique), la façon dont la co-construction est ensuite évaluée n'a pas encore été étudiée en profondeur au sein de la littérature interactionniste. Ici, nous étudions deux pratiques permettant à un locuteur de valider une co-construction, à savoir l'acquiescement simple et l'hétéro-répétition de la complétion. En menant une analyse séquentielle et multimodale de plusieurs séquences de co-construction en français, nous montrons qu’à travers ces deux procédés – qui semblent au premier abord similaires dans leur fonctionnement – les locuteurs effectuent une évaluation très différente : tandis que l'acquiescement simple valide la complétion proposée uniquement comme une version possible, l'hétéro-répétition la valide comme étant une complétion complètement adéquate. Cette contribution met en évidence que les interactants exploitent des ressources audibles aussi bien que visibles afin de manifester si et dans quel sens ils acceptent la complétion de leur tour de parole de la part d’un coparticipant. Nous soulignons l’importance d’étudier en détail les différents formatages possibles des tours évaluant une complétion afin de pouvoir distinguer différentes formes « d’acceptation » et de révéler la manière dont les locuteurs peuvent finement négocier leur position en tant que (co-)auteur ou destinataire d’un tour de parole.
Measuring the quality of metadata is only possible by assessing the quality of the underlying schema and the metadata instance. We propose some factors that are measurable automatically for metadata according to the CMD framework, taking into account the variability of schemas that can be defined in this framework. The factors include among others the number of elements, the (re-)use of reusable components, the number of filled in elements. The resulting score can serve as an indicator of the overall quality of the CMD instance, used for feedback to metadata providers or to provide an overview of the overall quality of metadata within a repository. The score is independent of specific schemas and generalizable. An overall assessment of harvested metadata is provided in form of statistical summaries and the distribution, based on a corpus of harvested metadata. The score is implemented in XQuery and can be used in tools, editors and repositories.
Badania nad postrzeganiem społecznym wskazują, że osoby uśmiechające się są na licznych wymiarach postrzegane korzystniej aniżeli osoby nieuśmiechające się. Jednakże w niniejszych badaniach twierdzimy, że ta zależność nie zawsze jest pozytywna ponieważ postrzeganie uśmiechu może być zależne od kultury i takich jej wymiarów jak indywidualizm-kolektywizm czy asertywność. Eksperyment przeprowadzony w sześciu krajach (w Polsce, Niemczech, Norwegii, Iranie, USA oraz RPA) pokazał, że osoby uśmiechające się mogą być w kulturach kolektywistycznych i mało asertywnych postrzegane mniej korzystnie od osób nieuśmiechających się. W Niemczech osoby uśmiechnięte zostały ocenione jako bardziej inteligentne, a w Iranie jako mniej inteligentne niż osoby nieuśmiechnięte. Ponadto we wszystkich krajach poza Iranem osoby uśmiechnięte były postrzegane jako bardziej szczere niż osoby nieuśmiechnięte. Dyskutujemy stwierdzone efekty w kontekście zróżnicowania kultur opisanego przez Housea i zespół (2004) oraz przez Hofstedego (2001).
We examine the task of separating types from brands in the food domain. Framing the problem as a ranking task, we convert simple textual features extracted from a domain-specific corpus into a ranker without the need of labeled training data. Such method should rank brands (e.g. sprite) higher than types (e.g. lemonade). Apart from that, we also exploit knowledge induced by semi-supervised graph-based clustering for two different purposes. On the one hand, we produce an auxiliary categorization of food items according to the Food Guide Pyramid, and assume that a food item is a type when it belongs to a category unlikely to contain brands. On the other hand, we directly model the task of brand detection using seeds provided by the output of the textual ranking features. We also harness Wikipedia articles as an additional knowledge source.
Automatic Food Categorization from Large Unlabeled Corpora and Its Impact on Relation Extraction
(2014)
We present a weakly-supervised induction method to assign semantic information to food items. We consider two tasks of categorizations being food-type classification and the distinction of whether a food item is composite or not. The categorizations are induced by a graph-based algorithm applied on a large unlabeled domain-specific corpus. We show that the usage of a domain-specific corpus is vital. We do not only outperform a manually designed open-domain ontology but also prove the usefulness of these categorizations in relation extraction, outperforming state-of-the-art features that include syntactic information and Brown clustering.
We report on the two systems we built for Task 1 of the German Sentiment Analysis Shared Task, the task on Source, Subjective Expression and Target Extraction from Political Speeches (STEPS). The first system is a rule-based system relying on a predicate lexicon specifying extraction rules for verbs, nouns and adjectives, while the second is a translation-based system that has been obtained with the help of the (English) MPQA corpus.
The annotation of parts of speech (POS) in linguistically annotated corpora is a fundamental annotation layer which provides the basis for further syntactic analyses, and many NLP tools rely on POS information as input. However, most POS annotation schemes have been developed with written (newspaper) text in mind and thus do not carry over well to text from other domains and genres. Recent discussions have concentrated on the shortcomings of present POS annotation schemes with regard to their applicability to data from domains other than newspaper text.
Dieser Artikel gibt einen Einblick in das GeoBib-Projekt und die Problematik der Verwendung von historischen Karten und der daraus abgeleiteten Geodaten in einem WebGIS. Das GeoBib-Projekt hat zum Ziel, eine annotierte und georeferenzierte Online-Bibliographie der frühen deutsch- bzw. polnischsprachigen Holocaust- und Lagerliteratur von 1933 bis 1949 bereitzustellen. Zu diesem Zeitraum werden historische Karten und Geodaten gesammelt, aufbereitet und im zugehörigen WebGIS des GeoBib-Portals visualisiert. Eine Besonderheit ist die aufwendige Recherche von Geodaten und Kartenmaterial für den Zeitraum zwischen 1933 und 1949. Die Problematiken bezüglich der Recherche und späteren Visualisierung historischer Geodaten und des Kartenmaterials sind ein Hauptaugenmerk in diesem Artikel. Weiterhin werden Konzepte für die Visualisierung von historischem, unvollständigem Kartenmaterial präsentiert und ein möglicher Lösungsweg für die bestehenden Herausforderungen aufgezeigt.
“My Curiosity was Satisfied, but not in a Good Way”: Predicting User Ratings for Online Recipes
(2014)
In this paper, we develop an approach to automatically predict user ratings for recipes at Epicurious.com, based on the recipes’ reviews. We investigate two distributional methods for feature selection, Information Gain and Bi-Normal Separation; we also compare distributionally selected features to linguistically motivated features and two types of frameworks: a one-layer system where we aggregate all reviews and predict the rating vs. a two-layer system where ratings of individual reviews are predicted and then aggregated. We obtain our best results by using the two-layer architecture, in combination with 5 000 features selected by Information Gain. This setup reaches an overall accuracy of 65.60%, given an upper bound of 82.57%.
We investigate how the granularity of POS tags influences POS tagging, and furthermore, how POS tagging performance relates to parsing results. For this, we use the standard “pipeline” approach, in which a parser builds its output on previously tagged input. The experiments are performed on two German treebanks, using three POS tagsets of different granularity, and six different POS taggers, together with the Berkeley parser. Our findings show that less granularity of the POS tagset leads to better tagging results. However, both too coarse-grained and too fine-grained distinctions on POS level decrease parsing performance.
Accurate opinion mining requires the exact identification of the source and target of an opinion. To evaluate diverse tools, the research community relies on the existence of a gold standard corpus covering this need. Since such a corpus is currently not available for German, the Interest Group on German Sentiment Analysis decided to create such a resource and make it available to the research community in the context of a shared task. In this paper, we describe the selection of textual sources, development of annotation guidelines, and first evaluation results in the creation of a gold standard corpus for the German language.
Vorwort
(2014)
Self-Regulated Learning (SRL) is a term that can be used to describe an individual’s ability to develop a skill set allowing him or her to learn in a number of different ways. SRL can also relate to new pedagogical theories that encourage teachers in formal education to motivate and support their students into achieving a high level of self-regulation. This paper reports on the findings of a number of surveys conducted with a wide variety of teachers in different countries, regarding their perceptions of SRL. The results and analysis of these surveys help inform not only the perceptions of SRL amongst teachers but also examine the challenges and opportunities that arise from taking this approach.
h ach KOMM; hör AUF mit dem klEInkram. Die Partikel komm zwischen Interjektion und Diskursmarker
(2014)
Der vorliegende Beitrag beschreibt das Formen-, Funktions- und Bedeutungsspek-trum der Partikel komm im gesprochenen Deutsch. Die Untersuchung zeigt, dass sich alle Verwendungen auf eine gemeinsame Grundfunktion zurückführen lassen, die als 'Aufforderung zum Aktivitätswechsel mit Appell an den common ground' bezeichnet wird. Es wird gezeigt, dass sich weitere, in der Literatur häufig der Partikel selbst zugeschriebene Bedeutungsbestandteile aus dem syntaktischen und sequenziellen Kontext ergeben. Verschiedene Kontexte lassen verschiedene Aspekte des Aktivitätswechsels salient erscheinen, so dass die Aufforderung ent-weder den Beginn einer neuen Handlung oder das Beenden einer vorausgehenden Aktivität fokussiert. Außerdem wird diskutiert, welcher Subklasse der Diskurspartikeln sich komm zuordnen lässt. Es zeigt sich, dass sowohl Merkmale von Dis-kursmarkern als auch von Interjektionen vorliegen, dass die Partikel aber auch von den prototypischen Vertretern beider Kategorien abweichende Merkmale zeigt, so dass vorgeschlagen wird, auf eine Klassifikation unterhalb der Ebene der Diskurspartikel zu verzichten, solange nicht weitere von Imperativen abgeleitete Partikeln (z.B. warte, sag mal) empirisch untersucht sind, mit denen komm möglicherweise eine eigene Subklasse bildet.