K. Ola Ahlqvist, PhD
- Assistant Professor
- Department of Geography
- 1049B Derby Hall
- 154 N Oval Mall
- Columbus, OH 43210
- Ph. +1 614 247 7997
Welcome
Thanks for visiting. My work combine an enthusiasm for teaching with a curiosity about semantic issues in geographic information and visualization.
Work history
The Ohio State University, Geography department, U.S.A.
Penn State University, Geography department, GeoVISTA center, U.S.A.
Stockholm University, Department of Physical Geography and Quaternary Geology, SWEDEN
Stockholm University, Central administration, Technical office
Järfälla municipality, Park and Nature Department, Stockholm, SWEDEN
The Åland islands autonomous government and administrative board, FINLAND
My education
Post Doctoral training at Penn State University, U.S.A.
Ph.D. in Geography with emphasis on physical geography,
Stockholm University, Sweden
B.Sc. in Biology and Earth Science, Stockholm
University, Sweden
Sergeant, Radio Intelligence Analyst, Swedish Military Service
Recent publications (send an email for reprints)
Ahlqvist, O., 2008, Extending post classification change detection using semantic similarity metrics to overcome class heterogeneity: a study of 1992 and 2001 National land Cover Database changes, Remote Sensing of Environment 112(3): 1226-1241
Ahlqvist, O., 2008, In search for classification that support the dynamics of science – The FAO Land Cover Classification System and proposed modifications, Environment and Planning B: Planning and Design 35(1): 169-186.
Ahlqvist, O. and Ban, H., 2007, Semantic spaces - a new second space for geographic analysis, Geography Compass, 1(3): 536-555.
Ahlqvist, O. and Shortridge, A., 2006, Characterizing Land Cover Structure with Semantic Variograms, Progress in Spatial Data Handling -12th International Symposium on Spatial Data Handling, Riedl, A., Kainz, W., and Elmes, G.A. (Eds.), Springer-Verlag, pp.401-415.
Ahlqvist, O., 2005, Using uncertain conceptual spaces to translate between land cover categories, International Journal of Geographical Information Science, 19(7): 831-857
Ahlqvist, O and Gahegan, M., 2005, Probing the relationship between classification error and class similarity, Photogrammetric Engineering and Remote Sensing, Vol.71, No.12, pp.1365-1373.
Ahlqvist, O., 2005, Using semantic similarity metrics to uncover category and land cover change, Lecture Notes in Computer Science, Vol. 3799, pp.107-119.
Ahlqvist, O., 2005, Transformation of Geographic Information Using Crisp, Fuzzy And Rough Semantics, in: Fisher, P.F. and Unwin, D. (Eds.), Re-Presenting GIS, Wiley, pp.99-112.
Ahlqvist, O., 2004, A parameterized representation of uncertain conceptual spaces, Transactions in GIS, 8(4), 493-514.
