The robustness of content-based search in hierarchical peer to peer networks
Maria Elena Renda, Jamie Callan · 2004
Hierarchical peer to peer networks with multiple directory services are an important architecture for large-scale file sharing due to their effectiveness and efficiency. Recent research argues that they are also an effective method of providing large-scale content-based federated search of text-based digital libraries. In both cases the directory services are critical resources that are subject to attack or failure, but the latter architecture may be particularly vulnerable because content is less likely to be replicated throughout the network.