TY - GEN
T1 - Filtering mechanisms for the visualization of geo-referenced information
AU - Carmo, Maria Beatriz
AU - Freitas, Sérgio
AU - Afonso, Ana Paula
AU - Cláudio, Ana Paula
PY - 2005
Y1 - 2005
N2 - This paper describes a prototype of a web tool for the visualization of geo-referenced information organized in several categories. The main features that distinguish this tool from others with the same purpose are the inclusion of filtering mechanisms based on semantic criteria and the use of multiple representations with different levels of detail. Filtering mechanisms contribute to reduce the amount of displayed data allowing the generation of intelligible representations. The user selects interactively the categories she/he is interested in. This is a basic filtering mechanism, but besides this, a degree of interest function is used to include semantic criteria. This function quantifies the user's interest in order to visualize the most relevant data, suppressing the less relevant data. The definition of multiple representations with different levels of detail enables the reduction of the detail when small scales are being used. In addition less detailed representations are used to present less relevant data.
AB - This paper describes a prototype of a web tool for the visualization of geo-referenced information organized in several categories. The main features that distinguish this tool from others with the same purpose are the inclusion of filtering mechanisms based on semantic criteria and the use of multiple representations with different levels of detail. Filtering mechanisms contribute to reduce the amount of displayed data allowing the generation of intelligible representations. The user selects interactively the categories she/he is interested in. This is a basic filtering mechanism, but besides this, a degree of interest function is used to include semantic criteria. This function quantifies the user's interest in order to visualize the most relevant data, suppressing the less relevant data. The definition of multiple representations with different levels of detail enables the reduction of the detail when small scales are being used. In addition less detailed representations are used to present less relevant data.
KW - Degree of interest function
KW - Filtering mechanisms
KW - Geo-referenced data
KW - Visualization
UR - http://www.scopus.com/inward/record.url?scp=77953974000&partnerID=8YFLogxK
U2 - 10.1145/1096985.1096987
DO - 10.1145/1096985.1096987
M3 - Conference contribution
AN - SCOPUS:77953974000
SN - 1595931651
SN - 9781595931658
T3 - International Conference on Information and Knowledge Management, Proceedings
SP - 1
EP - 4
BT - GIR'05 - Proceedings of the ACM Workshop on Geographic Information Retrieval, Co-located with the ACM Conference on Information and Knowledge Management, CIKM 2005
T2 - 2nd Workshop on Geographic Information Retrieval, GIR'05, Co-located with the ACM Conference on Information and Knowledge Management, CIKM 2005
Y2 - 4 November 2005 through 4 November 2005
ER -