Antony K. Cooper

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The Commission on Spatial Data Standards of the International Cartographic Association (ICA) is working on defining formal models and technical characteristics of Spatial Data Infrastructures (SDI). To date, this work has been restricted to the Enterprise and Information Viewpoints from the ISO Reference Model for Open Distributed Processing (RM-ODP)(More)
The Commission on Geoinformation Infrastructures and Standards of the International Cartographic Association (ICA) is working on defining models of spatial data infrastructures (SDI). SDI models from the enterprise and information viewpoints of the Reference Model for Open Distributed Processing (RM-ODP) have already been presented. Our model from the(More)
Online social spaces have become very popular in the past couple of decades. With the great numbers of users in the online environments it becomes obvious that the human factor plays an important role in the social structure of such environments. In online virtual worlds such as Second Life one may encounter not only civil, but even criminal offenses such(More)
Conventionally in formal concept analysis (FCA), concept stability is preferred in the lattice, because instability (i.e. low stability) represents noise that clouds the analysis of the data. However, high concept stability means that there are many objects with the same intent and many attributes with the same extent, which could be interpreted as a high(More)
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