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Full-Text Articles in Physical Sciences and Mathematics
Schema Matching And Data Extraction Over Html Tables, Cui Tao
Schema Matching And Data Extraction Over Html Tables, Cui Tao
Theses and Dissertations
Data on the Web in HTML tables is mostly structured, but we usually do not know the structure in advance. Thus, we cannot directly query for data of interest. We propose a solution to this problem for the case of mostly structured data in the form of HTML tables, based on document-independent extraction ontologies. The solution entails elements of table location and table understanding, data integration, and wrapper creation. Table location and understanding allows us to locate the table of interest, recognize attributes and values, pair attributes with values, and form records. Data-integration techniques allow us to match source records …
Ontological Approaches For Semantic Interoperability, Michael A. Zang, Jens G. Pohl
Ontological Approaches For Semantic Interoperability, Michael A. Zang, Jens G. Pohl
Collaborative Agent Design (CAD) Research Center
This paper provides a basic description of the concept of an ontology. It then describes how ontologies are structured and employed in the context of interfaces between software based information systems. This usage is discussed in the context of three successive levels of semantic interoperability between two example systems. The paper goes on to suggest that the interfaces between information systems should perhaps be viewed and implemented as systems themselves. The paper concludes by providing a brief summary of what was discussed.
The Emerging Knowledge Management Paradigm: Some Organizational And Technical Issues, Jens G. Pohl
The Emerging Knowledge Management Paradigm: Some Organizational And Technical Issues, Jens G. Pohl
Collaborative Agent Design (CAD) Research Center
This paper addresses the expectations, organizational implications, and information processing requirements, of the emerging knowledge management paradigm. A brief discussion of the enablement of the individual through the wide-spread availability of computer and communication facilities, is followed by a description of the structural evolution of organizations, and the architecture of a computer-based knowledge management system. The author discusses two trends that are driven by the treatment of information and knowledge as a commodity: increased concern for the management and exploitation of knowledge within organizations; and, the creation of an organizational environment that facilitates the acquisition, sharing and application of knowledge. …