]> 2010-03-19T17:33:12-04:00 Semantic web services in a virtual observatory We present a set of four web services resulting from our work on a semantic data framework in the setting of virtual observatories. These services allow a client service to search for data using three primary selections: parameter, date-time range and instrument, and also to return appropriate service links to the actual data (the fourth service). These services use a shared understanding of the inputs, outputs and preconditions as defined by a formal ontology, encoded in the World Wide Web Consortium's Ontology Web Language Recommendation and running in an internet accessible environment with Web Service Description Language (WSDL) bindings. The services can utilize reasoning services just as a user of the web portal is able to. The service client can optionally utilize the ontology when it consumes the service for additional knowledge or may be used purely syntactically (as most existing web services are now). We present these services within a specific domain context for the Virtual Solar-Terrestrial Observatory. inproceedings Proceedings of the Geoinformatics 2007 Conference fox2007semantic Semantic Web Services in a Virtual Observatory 2007 Year Title Natural science Tag Paper url May Month Key Booktitle Bibtype Patrick West Deborah L. McGuinness Luca Cinquini Peter Fox Author San Diego, Ca. Address Abstract Publication Proceeding Paper Conference Paper