M-Filter: Semantic XML Data Filtering System for Multiple Queries

In most web applications, publish-subscribe systems based on XML data filtering have been evolved. Many researchers have developed the various filtering mechanisms for XML data such as XFilter, YFilter, AFilter, Bitmap Filtering and TwigX-Guide. In this paper, we propose a new XML data filtering mechanism, called M-Filter which is based on ontology to get the semantic information. Proposed method intends to provide approximate information and queries which are matched with the incoming XML documents. In this system, all XPath queries are transformed into a single tree with node relation lists to filter the irrelevant paths. On the other hand, XML document is parsed by SAX parser and then prefix tree is built. After that, matching step will be carried out. Finally, we present our experimental results comparing with previous methods.