Abstract
During the last years, many approaches have been proposed in order to address the issue of automated service composition. In this chapter, we discuss the so-called “Roman model”, in which services are abstracted as transition systems and the objective is to obtain a composite service that preserves a desired interaction, expressed as a (virtual) target service. We will also outline its deployment in the challenging applications of smart houses, i.e., buildings pervasively equipped with sensors and actuators making their functionalities available according to the service-oriented paradigm.
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Notes
- 1.
- 2.
Such a framework is inspired by the research on “semantic data integration” [27]. Obviously that research has dealt with data (i.e., static aspects) and not with computations (i.e., dynamic aspects) that are of interest in composition of services. Still many notions and insights developed in that field may have a deep impact in service composition. An example is the distinction that we make later between “service-tailored” and “client-tailored” service integration systems, which roughly mimic the distinction between Global As View (GAV) and Local As View (LAV) in data integration.
- 3.
Note that many scenarios of cooperative information systems, e.g., e-Government or e-Business, consider preliminary agreements on underlying ontologies, yet yielding a high degree of dynamism and flexibility.
- 4.
The reader should observe that also the standard proposal WSDL 2.0 adopts a similar approach: an operation can have multiple output messages (the out message and various outfault messages), and the client observes how the service behaved only after receiving a specific output message.
- 5.
In fact, it is possible to extend the approach and results presented here, to the case in which at each step more than one available behaviors acts as in [35].
- 6.
SM4All—Smart hoMes for All, is an FP7 project running from 1 September 2008 to 31 August 2011. Cf. the WWW site http://www.sm4all-project.eu/ and news on major international televisions: Globo TV—http://video.globo.com/Videos/Player/Noticias/0,,GIM1751401-7823-CASA+INTELIGENTE+E+MOVIDA+A+PENSAMENTO+NA+ITALIA,00.html, Channel 1 Russia—http://www.1tv.ru/news/other/191509, Italian Rai3—http://www.youtube.com/watch?v=a9F72_E4mT0 and http://rai.it/dl/tg3/rubriche/PublishingBlock-79554b45-1e4c-41a8-a474-ad3e22ab750f.html, Ability Channel—http://www.abilitychannel.tv/video/casa-domotica-sm4all/ .
- 7.
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- 9.
- 10.
Base types are identified by the http://www.sm4all-project.eu/datamodel/base namespace.
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Acknowledgments
The authors would like to thank all the persons who contributed over the years to the Roman model: Daniela Berardi, Diego Calvanese, Maurizio Lenzerini, Richard Hull, Alessandro Iuliani, Damiano Pozzi, Fahima Cheikh, Valerio Colaianni, Sebastian Sardiña, Claudio Di Ciccio, Riccardo De Masellis, Paolo Felli, Ettore Iacomussi, Vincenzo Forte, Mario Caruso. We also would like to acknowledge the support of the projects MAIS and Brindisys (Italian), SemanticGov and TONES (EU FP6), SM4All, GreenerBuildings and ACSI (EU FP7).
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De Giacomo, G., Mecella, M., Patrizi, F. (2014). Automated Service Composition Based on Behaviors: The Roman Model. In: Bouguettaya, A., Sheng, Q., Daniel, F. (eds) Web Services Foundations. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7518-7_8
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