Boosting a Network of Semantic Peers

InaPeerDataManagementSystem(PDMS),semanticpeers connect with each other through semantic mappings between their own schemas. Because of schema heterogeneity, due to peers’ autonomy as for data representation, querying a PDMS implies query reformulations across semantic mappings, possibly incurring in a semantic degradation due to the reiterated approximations given by the traversal of long paths. The linkage closeness of semantically similar peers is thus a crucial issue. In this paper we present a strategy for the incremental maintenance of a flexible network organization for PDMSs that clusters together semanti- cally related peers