01466naa a2200229 a 450000100080000000500110000800800410001902400330006010000250009324501110011826000090022952007460023865000170098465300260100165300230102765300200105065300250107065300240109565300300111970000200114977300670116912576212020-01-15       2009    bl uuuu     u00u1 u    #d7 a10.1145/1517463.15174662DOI1 aMACARIO, C. G. do N.  aSpecification of a framework for semantic annotation of geospatial data on the Web.h[electronic resource]  c2009  aThe Web is a huge repository of geospatial information. Efficient retrieval of this information is a key factor in planning and decision-making in many domains, including agriculture. However, standards for data annotation and exchange enable only syntactic interoperability, while semantic heterogeneity presents challenges. This work describes a framework that tackles interoperability problems via semantic annotations, which are based on multiple ontologies. The framework is being developed within a project to support agricultural planning in Brazil. The paper discusses design and implementation issues using a real case study, provides an overview of annotation mechanisms and identi?es requirements for annotating agricultural data.  aSpatial data  aAnotação semântica  aDados geoespaciais  aGeospatial data  aGeospatial standards  aSemantic annotation  aSemantic interoperability1 aMEDEIROS, C. B.  tSIGSPATIAL Special, New Yorkgv. 1, n. 1, p. 27-32, Mar. 2009.