Archivio per 28 Mag 2015

28
Mag
15

Percolation on Networks with Conditional Dependence Group

See on Scoop.itSocial Foraging

Recently, the dependence group has been proposed to study the robustness of networks with interdependent nodes. A dependence group means that a failed node in the group can lead to the failures of the whole group. Considering the situation of real networks that one failed node may not always break the functionality of a dependence group, we study a cascading failure model that a dependence group fails only when more than a fraction β of nodes of the group fail. We find that the network becomes more robust with the increasing of the parameter β. However, the type of percolation transition is always first order unless the model reduces to the classical network percolation model, which is independent of the degree distribution of the network. Furthermore, we find that a larger dependence group size does not always make the networks more fragile. We also present exact solutions to the size of the giant component and the critical point, which are in agreement with the simulations well.

See on journals.plos.org

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28
Mag
15

Intuition May Reveal Where Expertise Resides in the Brain

See on Scoop.itWith My Right Brain

Our ability to provide rapid, accurate answers engages a small area in the brain’s basal ganglia, a hub for learning and automatic behaviors
See on scientificamerican.com

28
Mag
15

Artificial Life in Quantum Technologies

See on Scoop.itPapers

We develop a quantum information protocol that models the biological behaviors of individuals living in a natural selection scenario. The artificially engineered evolution of the quantum living units shows the fundamental features of life in a common environment, such as self-replication, mutation, interaction of individuals, and death. We propose how to mimic these bio-inspired features in a quantum-mechanical formalism, which allows for an experimental implementation achievable with current quantum platforms. This result paves the way for the realization of artificial life and embodied evolution with quantum technologies.

Artificial Life in Quantum Technologies
U. Alvarez-Rodriguez, M. Sanz, L. Lamata, E. Solano

http://arxiv.org/abs/1505.03775

See on arxiv.org

28
Mag
15

The Grumpy Economist: Homo economicus or homo paleas?

See on Scoop.itWith My Right Brain

Psychological study of bureaucracies, trying to understand their manifest irrationality, would be interesting inquiry http://t.co/BWDciJnqYj

See on johnhcochrane.blogspot.fr

28
Mag
15

From Micro to Macro: Uncovering and Predicting Information Cascading Process with Behavioral Dynamics

See on Scoop.itPapers

Cascades are ubiquitous in various network environments. How to predict these cascades is highly nontrivial in several vital applications, such as viral marketing, epidemic prevention and traffic management. Most previous works mainly focus on predicting the final cascade sizes. As cascades are typical dynamic processes, it is always interesting and important to predict the cascade size at any time, or predict the time when a cascade will reach a certain size (e.g. an threshold for outbreak). In this paper, we unify all these tasks into a fundamental problem: cascading process prediction. That is, given the early stage of a cascade, how to predict its cumulative cascade size of any later time? For such a challenging problem, how to understand the micro mechanism that drives and generates the macro phenomenons (i.e. cascading proceese) is essential. Here we introduce behavioral dynamics as the micro mechanism to describe the dynamic process of a node’s neighbors get infected by a cascade after this node get infected (i.e. one-hop subcascades). Through data-driven analysis, we find out the common principles and patterns lying in behavioral dynamics and propose a novel Networked Weibull Regression model for behavioral dynamics modeling. After that we propose a novel method for predicting cascading processes by effectively aggregating behavioral dynamics, and propose a scalable solution to approximate the cascading process with a theoretical guarantee. We extensively evaluate the proposed method on a large scale social network dataset. The results demonstrate that the proposed method can significantly outperform other state-of-the-art baselines in multiple tasks including cascade size prediction, outbreak time prediction and cascading process prediction.

From Micro to Macro: Uncovering and Predicting Information Cascading Process with Behavioral Dynamics
Linyun Yu, Peng Cui, Fei Wang, Chaoming Song, Shiqiang Yang

http://arxiv.org/abs/1505.07193

See on arxiv.org

28
Mag
15

Cognitive Computing Isn’t Just a Buzzword, It’s the Next Big Thing in Technology

See on Scoop.itBounded Rationality and Beyond

Every so often tech reaches a place where it seems as though just making things faster won’t really make any difference. This is especially true of more unglamorous components such as processors. Manufacturers can go on making them faster and cheaper, but it becomes harder and harder to sell customers new PCs or phones on the basis of speed alone.

Already, we see that the high-end market has moved away from advertising clock speeds. It’s the big screens, software, cameras and high-speed data pipes that are selling upgrades now. Brand image and the intangible “experience” of owning a particular device are promoted far more than its raw capabilities – the fact that every top-tier phone now has to have a metal body is the perfect example of this.

Most often when this happens, a new “killer app” is required to create fresh demand. Sometimes the hardware, software and infrastructure required to turn vision into reality aren’t all ready when they’re needed. It’s another matter that some ideas aren’t accepted for socio-cultural reasons (such as Google Glass), some just don’t catch on (wireless charging should have been a huge deal years ago) and some are solutions to problems that don’t exist (does anyone remember digital photo frames?).

See on gadgets.ndtv.com

28
Mag
15

The Type of Smile That Helps Start New Relationships – PsyBlog

See on Scoop.itBounded Rationality and Beyond

People feel emotionally close to others displaying this type of smile. 

A ‘Duchenne smile’ is a powerful way of striking up a new relationship, a new study finds. People are highly tuned to the Duchenne smile, which involves upturned lips and crinkly eyes.

And they can easily spot a fake smile, which tends to involve only the mouth and not the eyes.

 
See on spring.org.uk




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