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Investigating the Effectiveness of an Efficient Label Placement Method Using Eye Movement Data
, 2012
"... This paper focuses on improving the efficiency and effectiveness of dynamic and interactive maps in relation to the user. A label placement method with an improved algorithmic efficiency is presented. Since this algorithm has an influence on the actual placement of the name labels on the map, it is ..."
Abstract
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This paper focuses on improving the efficiency and effectiveness of dynamic and interactive maps in relation to the user. A label placement method with an improved algorithmic efficiency is presented. Since this algorithm has an influence on the actual placement of the name labels on the map, it is tested if this efficient algorithms also creates more effective maps: how well is the information processed by the user. We tested 30 participants while they were working on a dynamic and interactive map display. Their task was to locate geographical names on each of the presented maps. Their eye movements were registered together with the time at which a given label was found. The gathered data reveals no difference in the user's response times, neither in the number and the duration of the fixations between both map designs. The results of this study show that the efficiency of label placement algorithms can be improved without disturbing the user's cognitive map. Consequently, we created a more efficient map without affecting it's effectiveness towards the user.
Generalisation and integration for location-based services
"... This paper deals with real-time generalisation and integration in connection to building locationbased services. In the paper we are only interested in location-based services that besides service data also require cartographic data. The paper starts with describing service data according to the Ope ..."
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This paper deals with real-time generalisation and integration in connection to building locationbased services. In the paper we are only interested in location-based services that besides service data also require cartographic data. The paper starts with describing service data according to the Open GIS consortium specification open location service (OpenLS). Then the paper describes a system architecture (from the EEC-project GiMoDig) that could be used for creating location-based services. Especially, the layer where the integration and generalisation is due to be performed is described. The final part of the paper concerns some real-time generalisation and integration methods that are required for location-based services.
