PSIS: Parallel semantic indexing system-preliminary experiments

In this paper, we address the problem of defining a semantic indexing techniques based on RDF triples. In particular, we define algorithms for: i) defining clustering techniques of semantically similar RDF triplets; ii) defining algorithms for inserting, deleting and searching on a K-d based semantic tree built on the base of such clusterings; iii) defining a parallel implementation of the search algorithms. Preliminary experiments runned on a GRID-based parallel machines are designed and preliminary implemented and discusses, showing the performances of the proposed system