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Auflistung nach Autor:in "Yang, Chen-Chau"

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  • Konferenzbeitrag
    An Ontology-Driven Approach for Harmonizing and Integrating Environmental Information
    (Environmental Informatics and Systems Research, 2007) Chu, Yu-Chi; Huang, Su-Mei; Lien, Chin-Cheng; Yang, Chen-Chau
    The paper describes an ontology-driven methodology to be used for the integration of heterogeneous environmental information that may be distributed in government agencies. The methodology adopts a series of systematic processes to construct a localized domain ontology which may be used as the driven force or guidelines for environmental information integration. As an example application, the Taiwan EPA’s Environmental Data Repository Project (EDR) is used to demonstrate the feasibility and applicability of the proposed methodology.
  • Konferenzbeitrag
    Integrating Environmental Information through Data Warehousing with Data Quality Assurance
    (Environmental Communication in the Information Society - Proceedings of the 16th Conference, 2002) Chu, Yu-Chi; Young, Chea-Yuan; Yang, Chen-Chau
    This paper presents a comprehensive data warehouse framework for integrating environmental information. The proposed framework may serve as a platform and provide appropriate mechanisms for retrieving and gathering environmental data from various sources. For ensuring the quality of data in the environmental data warehouse, we introduce a four-phase process to ensure data quality while performing information integration. Overall data quality conditions can be identified and relevant information can be provided for determining whether the data meet “fit to use” criteria and whether they need to be improved. Accordingly, users may filter the data retrieved from the warehouse based upon various quality requirements.