Context-Awareness in Mobile Web Services

Bringing context-aware access to the web through spoken interaction

“…In existing context-aware systems, XML is already used widely for modeling and implementing context information. For example, the Anyserver platform [16] utilizes various types of context information encoded in XML, such as device information, networks, and application type. In the Omnipresent context-aware location-based system [3], context information is modeled based on OWL, while Prezerakos et al [41] use UML to model context and web services.…”

“…As it will be described in Sect. 3, we use a commercial platform that captures external context, then this information, together with the user profile, is used [3,16], Generic [4,7,20,37,53,55] One of the main points of our proposal is to provide a more natural interaction with users by means of spoken dialog systems. We propose an architecture valid for slot-filling dialog tasks.…”

“…Mobility support is guaranteed by the use of speech as the communication modality, which allows to easily access the application by means of mobile devices. Web services are used to obtain the information that is task-dependent in order to provide an answer to the user System type: Framework/Toolkits [4,7,20,37,53], Application [3] Mobility support [4,16,37,53,55] Level of Web service implementation: Full [3,4,7,20,53,55], Partially [16,37] Context information…”

“…External context is provided by means of the Appear IQ platform and internal context is considered by means of user profiles External: location, device, network, calendar, device, network [4,7,16,27,37,53] Internal: user peculiarities, preferences, needs [4,7,16,53] Context representation Key-value, tagged encoding, object-oriented We have developed an hybrid approach between key-value representation and dialog act semantics, in which the information which is vital for the oral interface is integrated into the dialog act and the rest of the contextual information is represented using XML Context modeling UML [50,53,55], XML [4,16,20,27], OWL/Ontology [7,37,53], tool specific [37] We use XML files to transmit context information using the OASIS web services context specification for sharing and passing context information between services and clients…”

“…Sensing Techniques: Instrumentation [7,27,55], Polling [16,37,53,55] Sensor interface: Web service [53,55], Specific [7,16,37] Data retrieval and publishing: Query, Subscription [37], Push-Only [37] Context storage Storage Model: Centralized [37,53], Distributed [4,53,55] We propose the use of relational databases for context storage Storage Databases: Relational Databases [4,37], XML [55], RDF/OWL [53], Others [37] Access Interface: Web service [4,53,55], Others Request Specification: SQL [4,37], XPath/XQuery [55], SPARQL [53], Specific…”