The formation of unstructured overlays without considering the underlying physical network properties introduces a substantial amount of redundant traffic into the P2P network. Also the frequent changes to the overlay topology and message overhead involved in maintaining the P2P overlays affects the performance of the system. By optimizing the routes traversed by the peers during the communicat...

Hierarchical structures are often deployed in large scale distributed systems to structure communication. Building and maintaining such structures in dynamic environments is challenging. Self-organisation is the approach taken in this chapter. AETOS, the Adaptive Epidemic Tree Overlay Service, provides tree overlays on demand. AETOS uses three local agents to this purpose (i) to translate appli...

Peer-to-Peer networks are divided into two main classes: unstructured and structured. Overlays from the first class are better suited for exhaustive search, whereas those from the second class offer very efficient key-value lookups. In this paper we present a novel overlay, PathFinder, which combines the advantages of both classes within one single overlay for the first time. Our evaluation sho...

This paper describes the systems developed by PUC Minas and IRISA for the person discovery task at MediaEval 2016. We adopt a graph-based representation and investigate two tag-propagation approaches to associate overlays cooccurring with some speaking faces to other visually or audio-visually similar speaking faces. Given a video, we first build a graph from the detected speaking faces (nodes)...

Siliceous fly ash can be applied as a cement replacement material for mortars used in cement-based floor overlays. At present, there is no knowledge of the appropriate curing conditions that need to on concrete floors. Moreover, previous research related has left gaps which such floors are cured. This study focuses understanding importance typical overlays physical, chemical, mechanical, and mi...

This paper describes an architecture for supporting multiview information overlays within the InVision visualisation framework. The concept of an information overlay is defined as well its key benefits, including the ability to support coordination of presentation across differing views. We describe how we can then abstract a view to being simply the lowest overlay in a generalised stack of inf...