Thomas Gottron

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On the microblogging site Twitter, users can forward any message they receive to all of their followers. This is called a retweet and is usually done when users find a message particularly interesting and worth sharing with others. Thus, retweets reflect what the Twitter community considers interesting on a global scale, and can be used as a function of(More)
In a multi-language Information Retrieval setting, the knowledge about the language of a user query is important for further processing. Hence, we compare the performance of some typical approaches for language detection on very short, query-style texts. The results show that already for single words an accuracy of more than 80% can be achieved, for(More)
Quite often, Linked Open Data (LOD) applications pre-fetch data from the Web and store local copies of it in a cache for faster access at runtime. Yet, recent investigations have shown that data published and interlinked on the LOD cloud is subject to frequent changes. As the data in the cloud changes, local copies of the data need to be updated. However,(More)
Two of the main challenges in retrieval on microblogs are the inherent sparsity of the documents and difficulties in assessing their quality. The feature sparsity is immanent to the restriction of the medium to short texts. Quality assessment is necessary as the microblog documents range from spam over trivia and personal chatter to news broadcasts,(More)
The main text content of an HTML document on the WWW is typically surrounded by additional contents, such as navigation menus, advertisements, link lists or design elements. Content Extraction (CE) is the task to identify and extract the main content. Ongoing research has spawned several CE heuristics of different quality. However, so far only the Crunch(More)
Schema information about resources in the Linked Open Data (LOD) cloud can be provided in a twofold way: it can be explicitly defined by attaching RDF types to the resources. Or it is provided implicitly via the definition of the resources’ properties. In this paper, we present a method and metrics to analyse the information theoretic properties and the(More)
More and more documents on theWorld WideWeb are based on templates. On a technical level this causes those documents to have a quite similar source code and DOM tree structure. Grouping together documents which are based on the same template is an important task for applications that analyse the template structure and need clean training data. This paper(More)