PatManQL: A Language to Manipulate Patterns and Data in Hierarchical Catalogs

Hierarchical structures and catalogs is a way to organize and enrich semantically the available information in the Web. From simple tree-like structures with syntactic constraints and type information, like DTDs and XML schemas, to hierarchies on a category/subcategory basis, like thematic hierarchies and RDF(s) models, such structures group data under certain properties. Paths in these structures are the knowledge artifacts to represent such groups. Considering paths in hierarchies as patterns which provide a conceptual clustering of data in groups sharing common properties, we present PatManQL, a language to manipulate patterns and data in hierarchical catalogs.