Nature conservation competes with alternative land uses. Therefore, ecologists and economists have for long analysed the optimal spatial configuration of reserve sites. One of these debates is concerned with the optimal size and number of individual reserve sites. This 1 The authors acknowledge Ekko van Ierland and Hans-Peter Weikard for useful comments on this paper. 2 This project is carried ...

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...

Semantic maps are a graphical knowledge representation scheme in which nodes represent concepts and edges between them represent connections between concepts. Weighted semantic maps are semantic maps that have weights assigned to edges to correspond to the strength of the connection between two concepts. The objective of the work reported here was to investigate the feasibility of automatically...

In their basic form, Visual Simultaneous Localization and Mapping (VSLAM) systems rely on metric maps to produce meaningful camera pose measurements. As researchers shift their focus towards integrating higher levels of data representations, we argue that the performance of such systems requires a mutually beneficial, tight integration between metric, topological and semantic maps. Therefore, w...

We study the topological construction called Mapper in the context of simply connected domains, in particular on images. The Mapper construction can be considered as a generalization for contour, split, and joint trees on simply connected domains. A contour tree on an image domain assumes the height function to be a piecewise linear Morse function. This is a rather restrictive class of function...