Jeffrey H. Johnson

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FuturICT foundations are social science, complex systems science, and ICT. The main concerns and challenges in the science of complex systems in the context of FuturICT are laid out in this paper with special emphasis on the Complex Systems route to Social Sciences. This include complex systems having: many heterogeneous interacting parts; multiple scales;(More)
We completed a comprehensive factor analysis of the full MMPI item pool by using recent advances in computational facilities. Nearly 20,000 MMPI protocols were collected for the analysis, however, we discarded invalid records and protocols with more than 50 missing items. Analyses were computed on a developmental sample of 5,506 subjects and a(More)
RoboCup Junior (Jr) is a division of the international RoboCup initiative. It involves children participating in various competitive and cooperative robot challenges. Experience at three international venues shows that these challenges generate great excitement and interest from both children and adults. We question whether there is any educational value in(More)
Recognition memory is one of the few areas of cognition in schizophrenia in which deficit has not been found. Such a finding has important theoretical implications for the understanding of schizophrenia. However, past studies in this area have been experimentally deficient. This paper presents a study of recognition in long-term episodic memory in(More)
! Abstract—A model of an Ant System where ants are controlled by a spiking neural circuit and a second order pheromone mechanism in a foraging task is presented. A neural circuit is trained for individual ants and subsequently the ants are exposed to a virtual environment where a swarm of ants performed a resource foraging task. The model comprises an(More)
A mathematical formalism is sketched for representing relational structure between agents. <i>n</i>-ary relations, <i>n</i> &gt; 2, require hypernetworks, which generalize binary relation networks. <i>n</i>-ary relations on sets create structure at higher levels of representation to the elements in multilevel systems. The <i>state</i> of a system is(More)
  • Teixeira De Sampayo, Mafalda Sousa-Rodrigues, David Jimenez-Romero, Cristian, Johnson, Jeffrey +4 others
  • 2016
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. The role of peer assessment in education has become of particular interest in recent years, mainly because of its(More)
Hypernetworks are based on topological simplicial complexes and generalize the concept of two-body relation to many-body relation. Furthermore, Hypernetworks provide a significant generalization of network theory, enabling the integration of relational structure, logic and analytic dynamics. A pulmonary embolism is a blockage of the main artery of the lung(More)
The scientific interest attracted by Spiking Neural Networks (SNN) has lead to the development of tools for the simulation and study of neuronal dynamics ranging from phenomenological models to the more sophisticated and biologically accurate Hodgkin-and-Huxley-based and multi-compartmental models. However, despite the multiple features offered by neural(More)
This study explores the design and control of the behaviour of agents and robots using simple circuits of spiking neurons and Spike Timing Dependent Plasticity (STDP) as a mechanism of associative and unsupervised learning. Based on a " reward and punishment " classical conditioning, it is demonstrated that these robots learnt to identify and avoid(More)