Today the purchase of external data is necessary for most direct marketing applications. No company can refer to the internal data alone, especially when targeting new customers. This paper discusses an integrated approach detailing how to select external data sources properly. For that, we try to standardize the selection process, to make it repeatable and to give practical hints in order to o...

The quality of master data has become an issue of increasing prominence in companies. One reason for that is the growing number of regulatory and legal provisions companies need to comply with. Another reason is the growing importance of information systems supporting decision-making, requiring master data that is up-to-date, accurate and complete. While improving and maintaining master data qu...

B.G. Kim and Hengky Susanto Hwang S. Lee Computer Science Dept. Electrical Eng. Dept. Univ. of Mass. Lowell KAIST {kim, hsusanto}@cs.uml.edu [email protected] Abstract A vertical handoff technique switches a mobile station among wireless networks with different technologies. Since a different network may not support the same QoS, the vertical handoff technique has to consider user QoS...

These notes are an introduction to .QL, an object-oriented query language for any type of structured data. We illustrate the use of .QL in assessing software quality, namely to find bugs, to compute metrics and to enforce coding conventions. The class mechanism of .QL is discussed in depth, and we demonstrate how it can be used to build libraries of reusable queries.

Within analytical customer relationship management (CRM), customer acquisition models suffer the most from a lack of data quality because the information of potential customers is mostly limited to socio-demographic and lifestyle variables obtained from external data vendors. Particularly in this situation, taking advantage of the spatial correlation between customers can improve the predictive...

This paper presents a methodology for assessing and improving the quality of information provided by corporate wikis. Regarding the assessment, we present two KPIs for measuring relative demand and relative usefulness of wiki articles, including corresponding processes and data model. In regard to improving quality, we use the KPIs to classify the articles. For this classification, we introduce...

In this paper we examine the transformation mapping mechanisms required in synchronizing virtual machine (VM) log audit data for the system administrator environment. We explain the formal constraints that are required by the transformation mapping process between the source and target log schemas for these VMs. We discuss the practical considerations of using these formalisms in establishing t...

Poor data quality can have a significant impact on system and organizational performance. With significant increase in data gathering and storage, the number of sources of data that must be merged in data warehouse and Enterprise Resource Planning (ERP) implementations has increased significantly. This makes data cleansing as part of the implementation conversion, increasingly difficult. In thi...

While the layered OSI model for networks provides a very clean conceptual framework for network design, certain applications are not completely indifferent to what happens at the lower layers. This is particularly true for multimedia and other real–time applications, which usually have stringent constraints on network performance in order to deliver an acceptable Quality of Experience (QoE) to ...

Temporal conformance of web service compositions guarantees the timely execution of service calls, decreases follow-up costs and increases QoS by avoiding deadline violations. Since it is impossible to make certain statements about the execution intervals of upcoming web service executions mainly due to varying activity durations and hardto-predict branching behavior we propose a probabilistic ...