@conference {94, title = {Visual composition of Web services}, booktitle = {IEEE Symposium on Human Centric Computing Languages and Environments (HCC 2003)}, year = {2003}, month = {October}, pages = {92 - 99}, publisher = {IEEE}, organization = {IEEE}, address = {Auckland, New Zealand}, abstract = {Composing Web services into a coherent application can be a tedious and error prone task when using traditional textual scripting languages. As an alternative, complex interactions patterns and data exchanges between different Web services can be effectively modeled using a visual language. In this paper we discuss the requirements of such an application scenario and we present the design of the BioOpera Flow Language. This visual composition language has been fully implemented in a development environment for Web service composition with usability features emphasizing rapid development and visual scalability.}, keywords = {JOpera, visual languages, visual service composition, Web service composition, Web services}, doi = {10.1109/HCC.2003.1260208}, url = {http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=1260208}, author = {Cesare Pautasso and Gustavo Alonso} }