http://wiki-upstream/ 2026-05-03T12:19:18+00:00 http://wiki-upstream/ http://wiki-upstream/lib/exe/fetch.php?media=wiki:dokuwiki-128.png text/html 2009-03-19T18:32:33+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:abstract_lubia_edzer&rev=1237487553&do=diff Spatio-temporal analysis of remote sensing imagery time series Edzer Pebesma, ifgi; Lubia Vinhas, INPE. Change detection from imagery data is often performed conditional to time, meaning that time snapshots are classified independently and compared afterwards. This makes it hard to evaluate the statistical properties of the changes found. We will explore possibilities for assessing change from image time series based on unconditional, joint analysis and classification of the series, and compar… text/html 2009-03-19T16:22:15+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:abstract_lubia_karine&rev=1237479735&do=diff Survey of web service specifications for spatio-temporal data Authors: Lubia Vinhas and Karine Ferreira Abstract: Spatio-temporal data is used to represent dynamic spatial phenomena. Some examples are physical processes like temperature and volcano eruption, moving objects like animal and iceberg movement tracking and as well as evolving objects like oil spill evolution on the ocean. This spatio-temporal data is generated by different technologies, such as fixed and mobile geosensor… text/html 2009-03-19T18:26:44+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:bla&rev=1237487204&do=diff PhD thesis topic: atomic functions and graphics primitives for analyzing spatio-temporal fields. In conditional analysis of spatio-temporal data, either spatial snapshots are analysed using spatial tools (map algebra) and their results considered over time, or time series at locations are analysed using time series analysis tools, and later analysed spatially. For a complete, unconditional analysis we need a new set of tools that generalize the ideas of conditional analysis in space or time to … text/html 2009-03-19T18:54:13+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:general&rev=1237488853&do=diff Change Modelling The cluster proposal is in a google doc here, ask Edzer for access. Due to current software limitations and the complexity of spatio-temporal data, analysis of space-time phenomena often proceeds conditionally by first treating space as static maps or snapshots and then showing their evolution over time, or by first collecting time series at individual locations and then analyzing their variation over space. text/html 2009-06-09T18:00:47+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:goodnessoffit&rev=1244570447&do=diff Tools for Assessment of Multiple Scale Land Change Models Kristina Helle, Pedro Andrade, and Edzer Pebesma Introduction The complex relations between biophysical and anthropological factors generate the land change patterns of our environment. In order to study this complex phenomena, we have to rely on simulation models, for example cellular automata or agent-based models. LUCC simulation models usually generate a new map given a real world map of land cover classes. In the figure below, the… text/html 2009-03-19T18:46:27+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:humanaspects&rev=1237488387&do=diff PhD thesis topic: An agent architecture for simulating human behavior in environmental change models Besides humans and institutions are the major driver of environmental changes [Lambin, Turner et al. 2001; Parker, Berger et al. 2001], models which take in consideration their motivations and the way they take decisions or reason about the environment they are embedded are yet in a very early stage. Several agent theories [Wooldbridge, Jennings 1995] and architectures [Minar 1996; Swarm 2008; … text/html 2009-03-19T14:21:40+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:sfstf&rev=1237472500&do=diff Master thesis topic: selection and filtering in space-time fields Given a data structure for regular raster-based space-time field data, where attribute is continuous or categorical, a prerequisite for doing powerfull spatio-temporal analysis is to have access to the most elementary operations on these fields. The first is selection: functions and are needed to subset a full ST imagery by (i) selecting a spatial region, (ii) selecting a time period, (iii) subsampling at a lower spatial resoluti… text/html 2009-03-19T14:18:46+00:00 Anonymous (anonymous@undisclosed.example.com) http://wiki-upstream/doku.php?id=group_modelling:st_data&rev=1237472326&do=diff Spatio-Temporal Data Types, Operators and Tools Participants: Edzer, Jan, Lubia and Karine 1. Cluster project proposal (input in cluster proposal template ) Title: Analyzing spatio-temporal phenomena from data: necessary representations and operations.