NCGIA- Maine has strong representation at COSIT

Several faculty and students from NCGIA- Maine presented at COSIT  held this year in Sante Fe, New Mexico.

Max Egenhofer, current Ph.D. student Joshua Lewis, M.S. student Shirly Stephen, and former student Mark Plummer were authors on the paper titled “Swiss Canton Regions: A Model for Complex Objects in Geographic Partitions.” This paper explores the ability to construct queries that go beyond the simple topological queries to more complex representation where separations, holes, and self-adjacency matter.

Upward Bound Math-Science student Jordan Barrett, now attending Syracuse University for Mathematics and Physics and Max Egenhofer collaborated the  pape “From Metric to Topology: Determining Relation in Discrete Spaces.” This paper presented a set of metrics that can uniquely identify simple topological relations between pixelized objects where the boundary is considered to be the outer set of pixels.

Ph.D. student Christopher Dorr, Reinhard Moratz, and Longin Jan Latecki from Temple University collaborated on the paper “Shape Similarity Based on the Qualitative Spatial Reasoning Calculus eOPRA.” The paper investigated the use of qualitative spatial representations (QSR) about relative direction and distance for shape representation.

Professor Torsten Hahmman and Lynn Usery of the U.S. Geological Survey collaborated on a paper is entitled “What is in a Contour Map? A Region-based Logical Formalization of Contour Semantics.” This paper analyses and formalizes contour semantics in a first-order logic ontology that forms the basis for enabling computational common sense reasoning about contour information.

PhD candidate Stacy Doore presented her research on “Spatial Preposition Specification for Improved Scene Descriptions” at the Doctoral Colloquium session. Her research investigates usage and preferences for spatial prepositions in describing different indoor scene settings.