Stuart M. Allen

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When should a machine attempt to communicate with a user? This is a historical problem that has been studied since the rise of personal computing. More recently, the emergence of pervasive technologies such as the smartphone have extended the problem to be ever-present in our daily lives, opening up new opportunities for context awareness through data(More)
Wireless mesh networks (WMN) represent semi-infrastructured ad hoc networks, where nodes act as both access points and routers. Wireless links between nodes are used to relay communication to a gateway node or point-of-presence (POP) for a wired or fibre network. Our interest is in mesh network deployment for a service provider (typically an ISP) who has a(More)
Microblogging communities have grown rapidly over the past few years, with Twitter being one of the most popular. Such microblogging services enable users to ‘vote for’ and highlight the interesting or useful posts of other users by forwarding or ‘retweeting’ to their social neighbours. Studying retweeting enables researchers to(More)
http://dx.doi.org/10.1016/j.chb.2014.12.038 0747-5632/ 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). ⇑ Corresponding author. E-mail addresses: m.j.chorley@cs.cardiff.ac.uk (M.J. Chorley), r.m.whitaker@cs. cardiff.ac.uk (R.M. Whitaker),(More)
Through web sites such as Twitter, micro-blogging has shown a remarkable growth, demonstrating the human desire to share and consume information and knowledge. At the same time, the capabilities of mobile devices such as smart phones has considerably increased, opening up new ways to communicate and share content. In particular it is becoming feasible that(More)
Cooperation is a fundamental human trait but our understanding of how it functions remains incomplete. Indirect reciprocity is a particular case in point, where one-shot donations are made to unrelated beneficiaries without any guarantee of payback. Existing insights are largely from two independent perspectives: i) individual-level cognitive behaviour in(More)
Increasingly popular location-based services can monitor our geographical positions in real time and so can provide a fundamental source for capturing users feelings and personal attitudes towards a particular place at a particular time. We propose a novel procedure for the representation of places through weighted tag-lists based on user reviews on these(More)
In this paper, we consider the optimisation of transmission schedules for infrastructure Wireless Mesh Networks in which data is forwarded through mesh routers from a single Internet Gateway node. The mesh routers receive and aggregate data from local mobile devices and each mesh router has an assigned data allowance to ensure fairness, set depending on its(More)