Mechanism for robust dataflow operation on smart spaces

Smart Space applications could use different architectures during their operations. The dataflow network pattern allows to modularize the system and provide seamless support for replaceable components. One of information sources for ubiquitous environments are the sensors, whose readings are processed by a number of computational units. The sensors and processing nodes together form the dataflow network. In this paper we describe the implementation of asynchronous dataflow network on top of RDF store. Possible causes of dataflow disruption are discussed. The mechanism for maintaining network operation when data processing unit looses connection with RDF store is proposed. The corresponding modification of node operation is provided.