In response to problems concerning the low autonomous localization accuracy of mobile robots in unknown environments and large cumulative errors due long time running, a spatial location representation method incorporating boundary information (SLRB) is proposed, inspired by mammalian cognitive mechanism. modeling firing characteristics cells environmental information, we construct vector relat...

Real-world phenomena have traditionally been modelled in a GIS in two and three dimensions. However, powerful insights can be gained by the integration of additional non-spatial dimensions, such as time and scale, in a higher dimensional spatial model. While this theory is conceptually sound, there is a lack of understanding of its consequences when applied to real world geographic information....

The World Wide Web provides new opportunities for collecting information from distributed, multiple, and heterogeneous data sources. Information brokering can be used to provide coordinated access to these sources if they are structured or semi-structured. The BUSTER (Bremen University Semantic Translator for Enhanced Retrieval) approach provides enabling technologies for information search and...

The theme of this paper is integration of information arising from observations of spatial entities and relationships. The assumption is that observations are imperfect; in particular, that they are imprecise and inaccurate. Each observation is made in a context that among other things provides a level of resolution. So, a treatment of integration of observations of this type must take account ...

This chapter summarizes our ongoing research on topological spatial reasoning using the Region Connection Calculus. We are addressing di erent questions and problems that arise when using this calculus. This includes representational issues, e.g., how can regions be represented and what is the required dimension of the applied space. Further, it includes computational issues, e.g., how hard is ...