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This thesis tries to answer the question how to predict the reaction of the stock market to news articles using the latest suitable developments in Natural Language Processing. This is done using text classification where a new article is matched to a category of articles which have a certain influence on the stock price. The thesis first discusses why… (More)

The eect of two instructional variables, visualisation and manipulation of objects, in learning to use the logical connective, conditional, was investigated. Instructions for 66 ®rst-year social science students were varied in the computer-based learning environment Tarski's World, designed for teaching ®rst-order logic (Barwise & Etchemendy, 1992. The… (More)

We describe a theory for binary relations in the Zermelo-Fraenkel style. We choose for ZFCU, a variant of ZFC Set theory in which the Axiom of Foundation is replaced by an axiom allowing for non-wellfounded sets. The theory of binary relations is shown to be equi-consistent ZFCU by constructing a model for the theory of binary relations in ZFU and vice… (More)

- Tessa, H. S. Eysink, Sanne Dijkstra, Jan Kuper
- 2007

The effect of two instructional variables, manipulation of objects and guidance, in learning to use the logical connective, conditional, was investigated. Instructions for 72 first-and second year social science students were varied in the computer-based learning environment Tarski's World, designed for teaching first-order logic (Barwise & Etchemendy,… (More)

- Tessa, H. S. Eysink, Sanne Dijkstra, Jan Kuper
- 2007

The effect of two instructional variables, visualisation and manipulation of objects, in learning to use the logical connective, conditional, was investigated. Instructions for 66 first-year social science students were varied in the computer-based learning environment Tarski's World, designed for teaching first-order logic (Barwise & Etchemendy, 1992). For… (More)

ii Abstract Formal accounts of contextual reasoning are of great importance for the development of sophisticated Artificial Intelligence theory and applications. This thesis' contribution to the theory of contextual reasoning is twofold. First, it delineates the computational complexity of contextual reasoning. A first insight is obtained by translating… (More)

- Tessa Eysink, Henrike Susan Eysink, J. Kuper
- 2001

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