Archivio per 22 gennaio 2015

22
Gen
15

Memory and burstiness in dynamic networks

See on Scoop.itSocial Neuroscience Advances

We introduce a class of complex network models which evolve through the addition of edges between nodes selected randomly according to their intrinsic fitness, and the deletion of edges according to their age. We add to this a memory effect where the attractiveness of a node is increased by the number of edges it is currently attached to, and observe that this creates burst-like activity in the attachment events of each individual node which is characterised by a power-law distribution of inter-event times. The fitness of each node depends on the probability distribution from which it is drawn; we find exact solutions for the expectation of the degree distribution for a variety of possible fitness distributions, and for both cases where the memory effect either is, or is not present. This work can potentially lead to methods to uncover hidden fitness distributions from fast changing, temporal network data such as online social communications and fMRI scans.

See on arxiv.org

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22
Gen
15

A Premonition of the Digital Humanities, Fifty Years Ago?

See on Scoop.itBrain Tricks: Belief, Bias, and Blindspots

In 1964, the great science fiction writer Stanisław Lem published his philosophical magnum opus Summa Technologiae. But it wasn’t translated into English (from Polish) until two years ago. Lem’s book is an exhilarating take on the future of humanity.

See on wired.com

22
Gen
15

Men and Women Process Emotions in Different Ways: This Affects What They Remember — PsyBlog

See on Scoop.itBounded Rationality and Beyond

Study of 3,000+ finds men and women process emotions differently and this affects what they remember. 

Women rate emotional images as more stimulating and are more likely to remember them than men, a new study finds.

While strong emotions tend to boost memory for both men and women, this neuroimaging study may help explain why women often outperform men on memory tests.

The results come from a very large study of 3,398 people who took part in four different trials.

Both men and women were asked to look at a series of pictures, some of which were emotionally arousing and others which were neutral.

See on spring.org.uk




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