Indexing Patterns within a Distributed System

This paper is concerning issues regarding the semantic indexing of resources in a peer to peer network. An important requirement is a good quality of the discovery, i.e. the selection of results very related to a specific request. Keys used for indexing and the corresponding urls of indexed resources are stored in a distributed hash table scattered among the different peers of a community. A key is a semantic description of resources and refers to concepts and properties belonging to ontologies. We propose a system based on Indexing Patterns in order to generate keys. It is used to guide users for producing assertions about their resources. It induces a navigation inside ontologies presented in graphical user interfaces in a friendly and easy to use way. With different examples, we present the main cases of key generation that define the indexing context of a resource.