Browsing Computer Science (CS) by Author "Zhu, Hongwei"
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Addressing the Challenges of Aggregational and Temporal Ontological Heterogeneity
Zhu, Hongwei; Madnick, Stuart E. (2006-01)In this paper, we first identify semantic heterogeneities that, when not resolved, often cause serious data quality problems. We discuss the especially challenging problems of temporal and aggregational ontological ... -
Context Interchange as a Scalable Solution to Interoperating Amongst Heterogeneous Dynamic Services
Zhu, Hongwei; Madnick, Stuart E. (2005-01)Many online services access a large number of autonomous data sources and at the same time need to meet different user requirements. It is essential for these services to achieve semantic interoperability among these ... -
Global Comparison Aggregation Services
Zhu, Hongwei; Madnick, Stuart E.; Siegel, Michael D. (2003-01)Web aggregation has been available regionally for several years, but this service has not been offered globally. As an example, using multiple regional comparison aggregators, we analyze the global prices for a Sony ... -
The Interplay of Web Aggregation and Regulation
Zhu, Hongwei; Madnick, Stuart E.; Siegel, Michael D. (2003-01)The development of web technology has led to the emergence of web aggregation, a service that collects existing web data and turns them into more useful information. We review the development of both comparison and ... -
Reasoning about Temporal Context using Ontology and Abductive Constraint Logic Programming
Zhu, Hongwei; Madnick, Stuart E.; Siegel, Michael D. (2005-01)The underlying assumptions for interpreting the meaning of data often change over time, which further complicates the problem of semantic heterogeneities among autonomous data sources. As an extension to the COntext ...