Context-based web service discovery model

Web services offer a vast number of interoperable programs. The problem of web services is how to develop mechanisms to locate automatically the correct Web service in order to meet the user's requirements, that is appointed by the discovery of web services. Indeed, it is beyond the human's capability to manually analyse web services functionalities. This paper proposes an architectural model to assist the user by taking into account its constantly changing context. This model selects services based on the query semantics, which consist of preferences and context. These preferences may be digital, for example the price of a ticket when booking a flight or QoS desired.