3) Definition and Management of Relationships
Web-page links represent implicit semantic relationships between interlinked Web pages. Search engines employ these relationships to improve the accuracy and relevance of their
replies, especially when keyword-based searching produces very large numbers of “relevant” Web pages. Organizing information about Grid resources information in hierarchical directories implies the existence of parent-child relationships. Limited extensions to these relationships are provided with cross-hierarchy links (references). Relationships can be represented through the relational models proposed to describe Grid monitoring data.