A Query Algorithm for Heterogeneous Information Network

Query Translation for Heterogeneous Information Management

Jointly power and bandwidth allocation for a heterogeneous satellite network

Due to lack of resources such as transmission power and bandwidth in satellite systems, resource allocation problem is a very important challenge. Nowadays, new heterogeneous network includes one or more satellites besides terrestrial infrastructure, so that it is considered that each satellite has multi-beam to increase capacity. This type of structure is suitable for a new generation of commu...

Approximate Query Translation Across Heterogeneous Information Sources

In this paper we present a mechanism for approximately translating Boolean query constraints across heterogeneous information sources. Achieving the best translation is challenging because sources support different constraints for formulating queries, and often these constraints cannot be precisely translated. For instance, a query [s ore > 8] might be “perfectly” translated as [rating > 0.8] a...

Query Processing in Heterogeneous Information Sources

The thesis presents a system that provides integrated access to heterogeneous information sources that may contain unstructured or semistructured data that are not described by a regular schema (e.g., the World-Wide-Web). The sources may have di erent and limited query capabilities and complete knowledge of their contents and structure may not exist. First an abstraction is proposed for the rep...

Boolean Query Mapping Across Heterogeneous Information Sources

Boolean Query Mapping Across Heterogeneous Information Sources Kevin Chen-Chuan Chang, Hector Garcia-Molina, Andreas Paepcke* Abstract---Searching over heterogeneous information sources is difficult because of the non-uniform query languages. Our approach is to allow a user to compose Boolean queries in one rich front-end language. For each user query and target source, we transform the user qu...