With the increasing popularity of XML, there is a growing number of reports on the XML-based Selective Dissemination of Information (SDI) in the literature, in which many XML filtering systems have been proposed to support the efficient XML-based SDI. While previous research into XML filtering focused on efficient filtering algorithms, in this paper, we consider a novel XML dissemination problem, focusing on the efficient dissemination of filtered data. To this end, we describe a significant problem associated with the dissemination of XML documents and propose effective algorithms which allow for its resolution. Based on these effective algorithms, we developed an XML-based SDI system that can disseminate XML documents efficiently. The experimental results demonstrate that the proposed algorithms outperform earlier XML filtering systems in terms of the usage of network bandwidth.
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