Aoristic analysis: the spatial interpretation of unspecific temporal events

Abstract

Temporal limitations of GIS databases are never more apparent than when the time of a change to any spatial object is unknown. This paper examines an unusual type of spatiotemporal imprecisionwhere an event occurs at a known location but at an unknown time. Aoristic analysis can provide a temporal weight and give an indication of the probability that the event occurred within a deŽ ned period. Visualisation of temporal weights can be enhanced by modiŽ cations to existing surface generation algorithms and a temporal intensity surface can be created. An example from burglaries in Central Nottingham (UK) shows that aoristic analysis can smooth irregularities arising from poor database interrogation, and provide an alternative conceptualisation of space and time that is both comprehensible and meaningful.

DOI: 10.1080/136588100424963

Extracted Key Phrases

7 Figures and Tables

Cite this paper

@article{Ratcliffe2000AoristicAT, title={Aoristic analysis: the spatial interpretation of unspecific temporal events}, author={Jerry H. Ratcliffe}, journal={International Journal of Geographical Information Science}, year={2000}, volume={14}, pages={669-679} }