Archive Page 3

13
Mag
19

Attack Tolerance of Link Prediction Algorithms: How to Hide Your Relations in a Social Network

via Attack Tolerance of Link Prediction Algorithms: How to Hide Your Relations in a Social Network

Attack Tolerance of Link Prediction Algorithms: How to Hide Your Relations in a Social Network
Link prediction is one of the fundamental research problems in network analysis. Intuitively, it involves identifying the edges that are most likely to be added to a given network, or the edges that appear to be missing from the network when in fact they are present. Various algorithms have been proposed to solve this problem over the past decades. For all their benefits, such algorithms raise serious privacy concerns, as they could be used to expose a connection between two individuals who wish to keep their relationship private. With this in mind, we investigate the ability of such individuals to evade link prediction algorithms.

https://arxiv.org/abs/1809.00152

13
Mag
19

Connectivity and complex systems: learning from a multi-disciplinary perspective

via Connectivity and complex systems: learning from a multi-disciplinary perspective

Connectivity and complex systems: learning from a multi-disciplinary perspective

In recent years, parallel developments in disparate disciplines have focused on what has come to be termed connectivity; a concept used in understanding and describing complex systems. Conceptualisations and operationalisations of connectivity have evolved largely within their disciplinary boundaries, yet similarities in this concept and its application among disciplines are evident. However, any implementation of the concept of connectivity carries with it both ontological and epistemological constraints, which leads us to ask if there is one type or set of approach(es) to connectivity that might be applied to all disciplines. In this review we explore four ontological and epistemological challenges in using connectivity to understand complex systems from the standpoint of widely different disciplines. These are: (i) defining the fundamental unit for the study of connectivity; (ii) separating structural connectivity from functional connectivity; (iii) understanding emergent behaviour; and (iv) measuring connectivity. We draw upon discipline-specific insights from Computational Neuroscience, Ecology, Geomorphology, Neuroscience, Social Network Science and Systems Biology to explore the use of connectivity among these disciplines. We evaluate how a connectivity-based approach has generated new understanding of structural-functional relationships that characterise complex systems and propose a ‘common toolbox’ underpinned by network-based approaches that can advance connectivity studies by overcoming existing constraints.

https://link.springer.com/article/10.1007/s41109-018-0067-2

13
Mag
19

Artificial Intelligence Crime: An Interdisciplinary Analysis of Foreseeable Threats and Solutions

Abstract

Artificial intelligence (AI) research and regulation seek to balance the benefits of innovation against any potential harms and disruption. However, one unintended consequence of the recent surge in AI research is the potential re-orientation of AI technologies to facilitate criminal acts, term in this article AI-Crime (AIC). AIC is theoretically feasible thanks to published experiments in automating fraud targeted at social media users, as well as demonstrations of AI-driven manipulation of simulated markets. However, because AIC is still a relatively young and inherently interdisciplinary area—spanning socio-legal studies to formal science—there is little certainty of what an AIC future might look like. This article offers the first systematic, interdisciplinary literature analysis of the foreseeable threats of AIC, providing ethicists, policy-makers, and law enforcement organisations with a synthesis of the current problems, and a possible solution space.

05
Apr
19

Ideologies, policies, and social complexity

A hard question that this line of thought poses and that I have not addressed here is whether policies can be formulated at all within the context of a fundamentally heterogeneous and contingent world. It might be argued that policy formation requires fairly simple cause-and-effect relationships in order to justify the idea of an intervention; and complexity makes it unlikely that such relationships exist. I believe policies can be formulated within this ontological framework; but I agree that the case must be made. A few earlier posts are relevant to this topic

Understanding Society

 

The approach to social and historical research that I favor is one that pays attention to the heterogeneity and contingency of social processes. It advises that social and historical researchers should disaggregate the large patterns they start with and try to identify the multiple underlying mechanisms, causes, motivations, movements, and contingencies that came together to create higher-level outcomes. Social research needs to focus on the micro- or meso-level processes that combined to create the macro world that interests us. The theory of assemblages fits this intellectual standpoint very well, since it emphasizes contingency and heterogeneity all the way down. The diagram above was chosen to give a visual impression of the complexity and interconnectedness of factors and causes that are associated with this approach to the social world.

According to the premises of this approach, we are not well served by imagining that there are simple, largescale forces that…

View original post 779 altre parole

10
Mar
19

Power and Leadership: A Complex Systems Science Approach Part I—Representation and Dynamics

Complexity Digest

Historical social narratives are dominated by the actions of powerful individuals as well as competitions for power including warfare, revolutions, and political change. Advancing our understanding of the origins, types and competitive strength of different kinds of power may yield a scaffolding for understanding historical processes and mechanisms for winning or avoiding conflicts. Michael Mann introduced a framework distinguishing four types of power: political, military, economic, and ideological. We show this framework can be justified based upon motivations of individuals to transfer decision making authority to leaders: Desire to be a member of a collective, avoiding harm due to threat, gaining benefit due to payment, acquiring a value system. Constructing models of societies based upon these types of power enables us to distinguish between social systems and describe their dynamics. Dynamical processes include (a) competition between power systems, (b) competition between powerful individuals within a power system of a society…

View original post 195 altre parole

10
Mar
19

Why science needs philosophy

Complexity Digest

Despite the tight historical links between science and philosophy, present-day scientists often perceive philosophy as completely different from, and even antagonistic to, science. We argue here that, to the contrary, philosophy can have an important and productive impact on science.

 

Opinion: Why science needs philosophy
Lucie Laplane, Paolo Mantovani, Ralph Adolphs, Hasok Chang, Alberto Mantovani, Margaret McFall-Ngai, Carlo Rovelli, Elliott Sober, and Thomas Pradeu
PNAS March 5, 2019 116 (10) 3948-3952; https://doi.org/10.1073/pnas.1900357116

Source: www.pnas.org

View original post

10
Mar
19

Rare and everywhere: Perspectives on scale-free networks

Complexity Digest

Are scale-free networks rare or universal? Important or not? We present the recent research about degree distributions of networks. This is a controversial topic, but, we argue, with some adjustments of the terminology, it does not have to be.

 

Rare and everywhere: Perspectives on scale-free networks
Petter Holme 
Nature Communicationsvolume 10, Article number: 1016 (2019)

Source: www.nature.com

View original post




Time is real? I think not

novembre: 2019
L M M G V S D
« Ago    
 123
45678910
11121314151617
18192021222324
252627282930  

Commenti recenti

Lorenzo Bosio su Un testo che trascende le sue…

Inserisci il tuo indirizzo e-mail per iscriverti a questo blog e ricevere notifiche di nuovi messaggi per e-mail.

Segui assieme ad altri 1.160 follower

Latest Tweets


%d blogger hanno fatto clic su Mi Piace per questo: