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UID:20250910T163848EDT-2993wn1n47@132.216.98.100
DTSTAMP:20250910T203848Z
DESCRIPTION:Abstract: In modern data-driven geography\, the question of val
 idity is often reduced to a matter of ground truth data. However\, for man
 y spatio-temporal modeling purposes\, such an account of validity is insuf
 ficient. Not only is ground truth often unavailable\, data-driven approach
 es also fail to account for fictive modeling scenarios as well as for vari
 ous purposes of modeling. Yet\, the validity of geographic modeling is ind
 ispensible in the age of hallucinating AI. Valid methods make science ”sci
 entific”\, while invalid methods are bound to deliver falsehoods. Given th
 is central role in science\, it is somewhat surprising to find that validi
 ty remains a rather obscure concept. In this talk\, I take a pragmatic (ac
 tion-based) approach to the validity of spatio-temporal models\, which I c
 all Protogeography. I argue that spatio-temporal models are valid only by 
 delivering a valid answer to a particular kind of spatio-temporal question
 \, corresponding to its information purpose. Questions are about experimen
 ts including spatio-temporal controls and measures. The latter constitute 
 the information purposes of models. Answers are valid if they fit this pur
 pose and the underlying experiments are successful. I discuss a correspond
 ing question-based grammar to formally distinguish among predictions\, ret
 rodictions\, projections\, and retrojective models. Based on various examp
 les from geography\, I show how the grammar can be used to understand the 
 purposes and validity concerns about various spatio-temporal model applica
 tions.\n	 \n
DTSTART:20240913T160000Z
DTEND:20240913T170000Z
LOCATION:Room 426\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue 
 Sherbrooke Ouest
SUMMARY:Simon Scheider (Utrecht University) - Protogeography: validity of s
 patio-temporal models as a means to answer questions
URL:/geography/channels/event/simon-scheider-utrecht-u
 niversity-protogeography-validity-spatio-temporal-models-means-answer-3582
 64
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