"Events are our units of perception; indeed, they are our very units of existence."
Cutting, 1981


03-2010: Paper accepted at GIScience

Title: Cognitive invariants of geographic event conceptualization: What matters and what refines.

Authors: Alexander Klippel, Rui Li, Frank Hardisty, Chris Weaver

Abstract. Behavioral experiments addressing the conceptualization of geographic events are few and far between. Our research seeks to address this deficiency by developing an experimental framework on the conceptualization of movement patterns. In this paper, we report on a critical experiment that is designed to shed light on the question of cognitively salient invariants in such conceptualization. Invariants have been identified as being critical to human information processing, particularly for the processing of dynamic information. In our experiment, we systematically address cognitive invariants of one class of geographic events: single entity movement patterns. To this end, we designed 72 animated icons that depict the movement patterns of hurricanes around two invariants: size difference and topological equivalence class movement patterns endpoints. While the endpoint hypothesis, put forth by Regier (2007), claims a particular focus of human cognition to ending relations of events, other research suggests that simplicity principles guide categorization and, additionally, that static information is easier to process than dynamic information. Our experiments show a clear picture: Size matters. Nonetheless, we also find categorization behaviors consistent with experiments in both the spatial and temporal domain, namely that topology refines these behaviors and that topological equivalence classes are categorized consistently. These results are critical steppingstones in validating spatial formalism from a cognitive perspective and cognitively grounding work on ontologies.


01-2010: Workshop accepted at GIScience

Workshop on movement pattern analysis has been accteped at the GIScience conference in Zurich.

Sep. 11th, 2009: Paper accepted at workshop: Studying Moving Objects in a three-dimensional world, 3rd Workshop on Behaviour Monitoring and Interpretation, BMI'09.

Title: A Chorematic Approach to Characterizing Movement Patterns

Abstract: We adopt a perspective of characterizing movement patterns on the
basis of conceptual primitives that we call movement choremes: MC. This theory is
an extension of our existing work on wayfinding choremes that specifically
addressed movement patterns important for wayfinding and route directions. Just
like in our previous work the goal is to develop a formal language that allows for
characterizing the movement of individual agents and entities from a cognitively
unifying perspective. By this we mean that while our main work concentrates on
the conceptual level of movement patterns, the framework is intended to
incorporate externalizations such as natural language and graphics (sketches) and
also formal theories of qualitative movement and spatial relation characterizations.
We discuss our approach in relation to existing frameworks such as RCC and the
9-intersection formalism to ground the potential of a formal-spatial language

Sep. 1st, 2009: The project was officially launched.