Traian Rebedea

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QAnswer is a question answering system that uses DBpedia as a knowledge base and converts natural language questions into a SPARQL query. In order to improve the match between entities and relations and natural language text, we make use of Wikipedia to extract lexicalizations of the DBpedia entities and then match them with the question. These entities are(More)
In this paper is presented a novel dialogistic, socio-cultural perspective and an associated software tool, which provide structured visualisation and analysis means of Computer Supported Collaborative Learning chat conversations. The implemented tools use knowledge-based techniques and are based on Bakhtin’s dialogistic paradigm. They visualize the(More)
There are many web platforms that are used to share non-textual content, such as videos, images, animations, etc. and that allow users to add comments for each item. YouTube is probably the most popular of them, with billions of videos uploaded by its users, but also with billions of comments for all these videos. While most of the videos only have a couple(More)
Discourse in instant messenger conversations (chats) with multiple participants is often composed of several intertwining threads. Some chat environments for Computer-Supported Collaborative Learning (CSCL) support and encourage the existence of parallel threads by providing explicit referencing facilities. The paper proposes a discourse model for such(More)
Students and members of communities of practice are often using online conversations to enhance their knowledge and skills. Although there have been a lot of efforts to find an efficient method for analyzing this type of discussions, most of the research has been mostly theoretical or has not been transformed into software due to technological limitations.(More)