Recognition of motion is vitally important to any animal. Vision research has proposed a number of algorithms applicable to action recognition. However, unlike successes in early visual perception, the past studies have not yet established the computational theory of action recognition. In the present study, we employ a dynamical systems approach and hypothesize that motions are encoded cogniti...

Appeared in: M. Ojeda-Aciego, de Guzma I., Brewka G., and Moniz Pereira L. (Eds.), Logics in Artificial Intelligence (JELIA 2000), LNAI 1919, Springer, pages 73-86, 2000. A framework to deal with spatial patterns at the qualitative level of mereotopology is proposed. The main contribution is to provide formal tools for issues of model equivalence and model similarity. The framework uses a multi...

This article contains a mathematical analysis of strategies for determining topological consistency of vector map simplifications. Such techniques exploit assumptions that can be made regarding the similarity of corresponding objects in successive simplifications. We propose that all topological relationships may be classified as planar or non-planar. A formal analysis of techniques for determi...

Let X be a compact metric space, let φ be a continuous self-map on X , and let F(X) denote the space of fuzzy sets on X equipped with the levelwise topology. In this paper we study relations between various dynamical properties of a given (crisp) dynamical system (X,φ) and its Zadeh’s extension Φ on F(X). Among other things we study various (weak, strong, mild etc.) mixing properties and also s...

Axion physics is briefly reviewed. Constraints from laboratory searches, astrophysics and cosmology require the axion mass to be in the range 10 . ma < 3 · 10eV. Near the lower end of this range, axions are all or a major component of the cold dark matter of the universe. The late infall of axions, and of any other cold dark matter particles, onto our galaxy produces streams and caustics in its...

Measuring Semantic Textual Similarity (STS), between words/ terms, sentences, paragraph and document plays an important role in computer science and computational linguistic. It also has many applications over several fields such as Biomedical Informatics and Geoinformation. In this paper, we present a survey on different methods of textual similarity and we also reported about the availability...