In many application areas for object database systems (ODBs), the access pattern is navigational, and a large fraction of the accesses are perfect match accesses/queries on one or more words in text strings in the objects. One example of such an application area is XML data stored in ODBs. In this paper, we give an overview of SigCache approach, which can significantly reduce the average object...

If both Reference Station (RS) and navigational device in Differential Global Positioning System (DGPS) receive signals from the same satellite, RS Position Components Error (RPCE) can be used to compensate for navigational device error. This research used hybrid method for RPCE prediction which was collected by a low-cost GPS receiver. It is a combination of Genetic Algorithm (GA) computing an...

The workload that is generated by users of explorative navigational information systems typically contains characteristic patterns. If these taskrespectively user-specific patterns are known to the system, they can be used to dynamically predict user interactions at runtime. These predictions enable the usage of predictive caching strategies and speculative execution strategies. Online analytic...

With the advent of XML as a format for data exchange and semistructured databases, query languages for XML and semistructured data have become increasingly popular. Many such query languages, like XPath and XQuery, are navigational in the sense that their variable binding paradigm requires the programmer to specify path navigations through the document (or data item). In contrast, some other la...

The study described in this article investigated how differences in cognitive style and online search experience influence the search performance and navigational pattern of individuals utilizing a university World Wide Web (WWW) site. Forty-eight undergraduate students with diverse academic backgrounds participated in the study. On the basis of cognitive style and prior experience with online ...

Web transaction data between Web visitors and Web functionalities usually convey user task-oriented behavior pattern. Mining such type of clickstream data will lead to capture usage pattern information. Nowadays Web usage mining technique has become one of most widely used methods for Web recommendation, which customizes Web content to user-preferred style. Traditional techniques of Web usage m...