ACM SIGSPATIAL international workshop on high performance and distributed geographic information systems 2010 : (HPDGIS 10) : held in conjunction with ACM SIGSPATIAL GIS 2010 : San Jose, California, USA : 2 November 2010. : inaugural ACM SIGSPATIAL HPDGIS 2010 : 18th ACM SIGSPATIAL international conference on advances in geographic information system : Nov 2010, San Jose, CA.