By means of local neighborhood regression and time windows, the generative topographic mapping (GTM) allows to predict and visually inspect time series data. GTM itself, however, is fully unsupervised. In this contribution, we propose an extension of relevance learning to time series regression with GTM. This way, the metric automatically adapts according to the relevant time lags resulting in ...

After the 2008 economic slowdown, and with increasing assault from enterprises from emerging economies, many innovative strategic leaders of multinational enterprises are forced to radically transform their enterprises. They often choose to change from low-cost strategy to innovation-driven product differentiation strategy. In this study, we use a multi-level Grounded Theory Methodology (GTM) a...

Harmonic Analysis [59] N. Bourbaki. Théories spectrales, Chapitres 1 et 2. Éléments de Mathématique,Réimpression inchangée de l’édition originale de 1967, Springer-Verlag, 2007[60] G. B. Folland. A Course in Abstract Harmonic Analysis. CRC Press, 1995[61] L. H. Loomis. An Introduction to Abstract Harmonic Analysis. van Nostrand,1953[62] M. A. Năımark. Normed Algebras. Third ...

The information systems (IS) research community is characterized by a large diversity of research approaches and topics. Although empirical quantitative research approaches dominate (Orlikowski et al. 1991), new research strategies are on the rise. Two research strategies that have received increasing scholarly attention recently are design science research (DSR) and the grounded theory method ...

We compare a number of different object layout algorithms. Figure 1, 2, and 4 depict the results obtained by laying out 320 image objects into a 2D grid with Kernelized Sorting (our method), Self Organizing Map http://www.cis.hut.fi/projects/somtoolbox/, and Generative Topographic Mapping (GTM) http://www.ncrg.aston.ac.uk/GTM/. Figure 3 and 5 show the corresponding cluster members of SOM and GTM.

The purpose of this article is to classify and compare – in essence to model – a number of different types of modelling methods employed within Operations Research and the Management Sciences (OR/MS). The classification of these methods is based on a selected number of generally recognised modelling properties. On the basis of this meta-model, requirements for the successful application of diff...

This paper details the application of geometric proportional analogies in the sub-classification of polygons within a topographic (land cover) map. The first part of this paper concerns geometric proportional analogies that include attributes (fill-pattern and fillcolour). We describe an extension to the standard theory of analogy that incorporates attributes into the analogical mapping process...

soil and land information is vital for land use planning and infrastructure development. maps of soils landscapes are powerful tools to guide sustainable planning and natural resource management. fuzzy set theory has been widely used in soil science for soil classification and mapping, land evaluation, fuzzy soil geostatistics, soil quality indices. in fuzzy logic-based approaches, soil spatial...

The topographic map of cell position in the avian retina is conserved and inverted when retinal ganglion neurons synapse with neurons in the optic tectum. Developmental mechanisms based on molecular gradients that specify positional information and pattern formation have been postulated in the establishment of these topographic maps of cells in retina and optic tectum. Two cell surface proteins...