01462naa a2200229 a 450000100080000000500110000800800410001910000230006024500990008326000090018252007550019165000160094665000170096265000160097965300260099565300260102165300200104765300230106765300240109070000200111477300980113415727952020-01-15       2009    bl uuuu     u00u1 u    #d1 aMACÁRIO, C. G. N.  aA framework for semantic annotation of geospatial data for agriculture.h[electronic resource]  c2009  aAbstract: The Web is a huge repository of geospatial information. Ef?cient 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.  aAgriculture  aSpatial data  aAgricultura  aAgricultural planning  aAnotação semântica  aGeospatial data  aInteroperabilidade  aSemantic annotation1 aMEDEIROS, C. B.  tInternational Journal Metadata, Semantics and Ontologiesgv. 4, n. 1/2, p. 118-132, May 2009.