Christie I. Ezeife

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Optimal application performance on a Distributed Object Based System (DOBS) requires class fragmentation and the development of allocation schemes to place fragments at distributed sites so data transfer is minimized. Fragmentation enhances application performance by reducing the amount of irrelevant data accessed and the amount of data transferred(More)
Sequential mining is the process of applying data mining techniques to a sequential database for the purposes of discovering the correlation relationships that exist among an ordered list of events. An important application of sequential mining techniques is web usage mining, for mining web log accesses, where the sequences of web page accesses made by(More)
Owing to important applications such as mining web page traversal sequences, many algorithms have been introduced in the area of sequential pattern mining over the last decade, most of which have also been modified to support concise representations like closed, maximal, incremental or hierarchical sequences. This article presents a taxonomy of sequential(More)
PLWAP algorithm uses a preorder linked, position coded version of WAP tree and eliminates the need to recursively re-construct intermediate WAP trees during sequential mining as done by WAP tree technique. PLWAP produces significant reduction in response time achieved by the WAP algorithm and provides a position code mechanism for remembering the stored(More)
Domain knowledge for web applications is currently being made available as domain ontology with the advent of the semantic web, in which semantics govern relationships among objects of interest (e. g., commercial items to be purchased in an e-Commerce web site). Our earlier work proposed to integrate semantic information into all phases of the web usage(More)
New transaction insertions and old transaction deletions may lead to previously generated association rules no longer being interesting, and new interesting association rules may also appear. Existing association rules maintenance algorithms are Apriori-like, which mostly need to scan the entire database several times in order to update the previously(More)
Processing costs in distributed environments is most often dominated by the network communications required for interprocess communication. It is well known from distributed relational database design research that careful placement of data “near” the users or processors where it is used is mandatory or system performance will suffer greatly. Data placement(More)
This paper proposes the integration of semantic information drawn from a web application's domain knowledge into all phases of the web usage mining process (preprocessing, pattern discovery, and recommendation/prediction). The goal is to have an intelligent semantics-aware web usage mining framework. This is accomplished by using semantic information in the(More)