A Spectrum of Web-Log Miners Knowledge Knowledge rich Have logical relations over page contents Database generated pages Can make accurate predictions even without data Knowledge middle Some hierarchical representations of ontology and content Most cases Interesting! Can predict based on similarity Knowledge poor Have only page-level logs No relational knowledge Can predict observed pages only when data is plenty 2021/1/262021/1/26 2 A Spectrum of Web-Log Miners ◼ Knowledge Rich: ◼ Have logical relations over page contents ◼ Database generated pages ◼ Can make accurate predictions even without data! ◼ Knowledge Middle: ◼ Some hierarchical representations of ontology and content ◼ Most cases! ◼ Can predict based on similarity ◼ Knowledge Poor: ◼ Have only page-level logs ◼ No relational knowledge ◼ Can predict observed pages only when data is plenty Interesting! Knowledge