Path-based keyword search over XML streams

Recently, a great deal of attention has been focusing on processing keyword search over XML and XML streams. The keyword search is simple and provides a user-friendly way of retrieving required data from an XML data. Though its popularity, there is a concern over its efficiency. For this reason, several methods have been proposed to enable keyword search over XML streams. However, most of them primarily aim at processing pure keyword search where only keywords are allowed as a query. However, in many cases, there is a demand to combine keyword search and path-based query. To address this problem, we propose a method to integrate XPath and keyword search so that we can combine XPathand keyword-based query, thereby making users possible to express their search demands in more specific ways. The experimental results show that the proposed scheme can process queries over XML streams practically.