In many research projects, much more data are created than made publicly available. Keeping research data deliberately closed or publishing only selected subsections of the gathered data are unfortunately common practices in academia. Fortunately, such problems have been getting more and more attention in the past years. However, another issue that is still often overlooked concerns research da...

We provide a mechanism that uses two biased coins and implements any distribution on a finite set of elements, in such a way that even if the outcomes of one of the coins is determined by an adversary, the final distribution remains unchanged. We apply this result to show that every quitting game in which at least two players have at least two continue actions has an undiscounted ε-equilibrium,...

As clarity in the Crisis Management domain is crucial, and there exists an enormous amount of Crisis Management documents, a specific language resource (the Controlled Language for Crisis Management, CLCM) for editing Crisis Management instructions in English has been previously developed. Based on a specially designed controlled language evaluation experiment, we have determined that manual si...

In this study, over a period of six months, we gathered empirical data from more than 200 users on a learning resource portal with a social bookmarking and tagging feature. Our aim was to study the interrelation of conventional metadata and social tags on the one hand, and their interaction with the environment, which can be understood as the repository, its resources and all stakeholders that ...

We describe ongoing work on the mapping between Attempto Controlled English (ACE) and OWL DL. ACE is a well-studied controlled language, with a parser that converts ACE texts into Discourse Representation Structure (DRS). We describe a relatively direct mapping of a subset of the DRS language to OWL DL. This mapping renders ACE an interesting companion to existing OWL front-ends.

We present AceWiki, a prototype of a new kind of semantic wiki using the controlled natural language Attempto Controlled English (ACE) for representing its content. ACE is a subset of English with a restricted grammar and a formal semantics. The use of ACE has two important advantages over existing semantic wikis. First, we can improve the usability and achieve a shallow learning curve. Second,...

Existing grammar frameworks do not work out particularly well for controlled natural languages (CNL), especially if they are to be used in predictive editors. I introduce in this paper a new grammar notation, called Codeco, which is designed specifically for CNLs and predictive editors. Two different parsers have been implemented and a large subset of Attempto Controlled English (ACE) has been ...

In spite of the explosive growth of the Internet, information relevant to users often unavailable even when using the latest browsers. At the same time, there is an ever increasing number of documents that vary widely in content, format and quality. The documents often change in content and location because they do not belong to any kind of centralized control. On the other hand, there is a hug...

The speci cation language Attempto Controlled English (ACE) is a controlled natural language, i.e. a subset of standard English with a domain-speci c vocabulary and a restricted grammar. The restriction of full natural language to a controlled subset is essential for ACE to be suitable for speci cation purposes. The main goals of this restriction are to reduce ambiguity and vagueness inherent i...

Clinicians could benefit from decision support systems incorporating the knowledge contained in clinical practice guidelines. However, the unstructured form of these guidelines makes them unsuitable for formal representation. To address this challenge we translated a complete set of pediatric guideline recommendations into Attempto Controlled English (ACE). One experienced pediatrician, one phy...