Papers by Bernardo Huberman
Trend Dynamics and Attention in Chinese Social Media
American Behavioral Scientist, Apr 13, 2015
We analyzed the temporal aspect of trends and trend-setters in Sina Weibo, contrasting it with ea... more We analyzed the temporal aspect of trends and trend-setters in Sina Weibo, contrasting it with earlier observations of Twitter. We found a vast difference in the content shared in China as compared with a global social network such as Twitter. In China, the trends are created almost entirely due to the retweets of media content such as jokes, images, and videos, unlike Twitter where trends have more to do with current global events and news stories. On closer inspection, we observed that most trends in Sina Weibo are due to the continuous retweets of a small percentage of fraudulent accounts, set up to artificially inflate certain posts. This reveals evidence of an “Internet Water Army,” a unique promotional method deployed by public relations companies in China to influence the popular dissemination of information in online social networks.
Physical Review Letters, Aug 22, 1977
Physical Review Letters, Apr 21, 1975
Auction-Based Efficient Communications in LEO Satellite Systems
Social Science Research Network, 2022
The Collective Brain
International Journal of Neural Systems, 1989
Since their invention, computers have been designed, used and improved using the human mind as me... more Since their invention, computers have been designed, used and improved using the human mind as metaphor. The appearance of a distributed form of computation in large networks in shifting the emphasis towards social structures as a source of inspiration for the design of new systems. I suggest that a reverse strategy could prove to be useful as well. If our results are any indication of future developments, the workings of distributed computational systems could provide a flexible and controlled environment for the study of complex interactions that are seldom accessible in the natural world.
The dynamics of collective action
Computational Economics, Mar 1, 1995
ABSTRACT
Probabilistic Cellular Automata
Springer eBooks, 1985
In spite of the recent progress made in understanding the non-linear dynamics of systems with few... more In spite of the recent progress made in understanding the non-linear dynamics of systems with few degrees of freedom, little is known about the time evolution of more complex structures. Systems with many degrees of freedom, which are pervasive in both the natural and artificial worlds, give rise to properties such as self-organization and computation which, in many cases, seem quite immune to external perturbations. Typical examples are found in biological organisms and modern computing structures, where the intractability of their dynamical behavior is partly linked to our limited knowledge about the global properties of solutions of non-linear partial differential equations.
Lecture Notes in Economics and Mathematical Systems, 1997
We present a market solution to the problem of maintaining a spatially extended physical system n... more We present a market solution to the problem of maintaining a spatially extended physical system near an unstable configuration. Computational agents representing individual controllers bid to buy or sell power that is used to push the system to a desired unstable configuration. Simulation results show that the auction leads to a stable control of an otherwise unstable system by focussing the power in those parts of the system where is most needed. We also studied the effectiveness of different market organizations in achieving control, and we noticed that the nearest neighbor structure uses the least amount of power to control the unstable system while also capable of reducing the average displacement of the chain.
Artificial intelligence and large scale computation: A physics perspective
Physics Reports, Dec 1, 1987
ABSTRACT
Achieving global stability through local controls
ABSTRACT
A dynamical model for the stick-slip behaviour of faults
Journal of Physics C: Solid State Physics, Sep 20, 1984
ABSTRACT
Collaboration, motivation, and the size of organizations
Journal of Organizational Computing and Electronic Commerce, 1996
Google, Inc. (search), Subscribe (Full Service), Register (Limited Service, Free), Login. Search:... more Google, Inc. (search), Subscribe (Full Service), Register (Limited Service, Free), Login. Search: The ACM Digital Library The Guide. ...
Dynamical singularities in ultradiffusion
Physical review, Dec 1, 1987
... Rev. Lett. 55, 2176 (1985). 10A. Maritan and AL Stella, Phys. Rev. Lett. 56, 1754 (1986); J. ... more ... Rev. Lett. 55, 2176 (1985). 10A. Maritan and AL Stella, Phys. Rev. Lett. 56, 1754 (1986); J. Phys. A 19, L269 (1986). ... Mod. Phys. 53, 175 (1981). 13B. A. Huberman and T. Hogg, Physica 22D, 376 (1986). 14H. A. Ceccato and JA Riera, J. Phys. A 19, L721 (1986). 5400 36.
Are the prefactor anomalies in superionic conductors due to 1-D effects?
Solid State Communications, Feb 1, 1979
ABSTRACT
Springer eBooks, 2012
Evaluating large sets of items, such as business ideas, is a difficult task. While no one person ... more Evaluating large sets of items, such as business ideas, is a difficult task. While no one person has time to evaluate all the items, many people can contribute by each evaluating a few. Moreover, given the mobility of people, it is useful to allow them to evaluate items from their mobile devices. We present the design and implementation of a mobile service, Rankr, which provides a lightweight and efficient way to crowdsource the relative ranking of ideas, photos, or priorities through a series of pairwise comparisons. We discover that users prefer viewing two items simultaneously versus viewing one image at a time with better fidelity. Additionally, we developed an algorithm that determines the next most useful pair of candidates a user can evaluate to maximize the information gained while minimizing the number of votes required. Voters do not need to compare and manually rank all of the candidates.
Transients and asymptotics in granular phase space
Zeitschrift für Physik, Sep 1, 1986
ABSTRACT
Physical review, Dec 1, 1987
The quantum states of an electron in a hierarchical potential are investigated in the tight- bind... more The quantum states of an electron in a hierarchical potential are investigated in the tight- binding approximation. The hierarchy is taken to be in the transition matrix elements, in natural analogy to the classical problem of diffusion in ultrametric structures. The energy spectrum is found to be a Cantor set, and analytical results are presented for its scaling properties. The en- velope of the wave function is found to decay algebraically for certain energies and to be constant for others. The results are in excellent agreement with high-precision numerical work.
Physical review, Dec 1, 1985
Physical review, Oct 1, 1985
%e present a theory of attractors on finite sets which is applicable to finite-state systems such... more %e present a theory of attractors on finite sets which is applicable to finite-state systems such as computing structures and other systems which display a hierarchy of organizations with a discrete time evolution. Because computing with attractive fixed points can lead to reliable behavior [B. A. Huberman and T. Hogg, Phys. Rev. Lett. 52, 1048 (1984)], the theory deals with dissipative process- es, i.e. , those which contract volumes in phase space. The stability of such systems is quantified and analytic expressions are obtained for the appropriate indices in some limiting cases. It is also shown that trees with ultrametric topologies provide the natural language for the'se systems. The theory is extended to include several practical constraints, and connections are made with experimental quan- tities which can be measured in particular architectures.
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Papers by Bernardo Huberman