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Coordination Complexity: Small Information Coordinating Large Populations [article]

Rachel Cummings, Katrina Ligett, Jaikumar Radhakrishnan, Aaron Roth, Zhiwei Steven Wu
2016 arXiv   pre-print
The coordination complexity represents the minimal amount of information that a centralized coordinator, who has full knowledge of the problem instance, needs to broadcast in order to coordinate the n  ...  We initiate the study of a quantity that we call coordination complexity.  ...  Efficiency in Games with Dynamic Population Now we briefly discuss a connection between coordination complexity and the efficiency in games with dynamic population, which leverages the connection to joint  ... 
arXiv:1508.03735v2 fatcat:z7a7a6fxarh2tolp4bcklgiyli

Communication and coordination

John H. Miller, Scott Moser
2004 Complexity  
However, once agents reach a particular strategic threshold, sending even a priori meaningless messages serves to increase the likelihood that the population will coordinate on the superior outcome.  ...  coordination point.  ...  The omitted category, Chatter, constitutes a very small part of the population. 7 Occasionally, there are fewer than three such periods, in which case we use whatever periods are available.  ... 
doi:10.1002/cplx.20034 fatcat:xlh4kaoknnevrbhg4v27z5x5ua

The use of synchrotron radiation in X-ray charge density analysis of coordination complexes

Philip Coppens, Bo Iversen, Finn Krebs Larsen
2005 Coordination chemistry reviews  
Y: large bright spheres, Ba: large dark spheres, Cu: small dark sphere and O: small bright spheres, from reference [83] .  ...  The plot is not at all comprehensive but does include studies of compounds ranging from small organic molecules to porous materials to coordination complexes.  ... 
doi:10.1016/j.ccr.2004.02.019 fatcat:bluijel5zbcddp3jkm5fbo5yaq

DYNAMIC PARTNERSHIP FORMATION FOR MULTI-ROVER COORDINATION

MATT KNUDSON, KAGAN TUMER
2013 Advances in Complex Systems  
Coordinating multiagent systems to maximize global information collection is a key challenge in many real world applications such as planetary exploration, and search and rescue.  ...  In particular, in many domains where communication is expensive (e.g. in terms of energy), the coordination must be achieved in a passive manner, without agents explicitly informing other agents of their  ...  at very high complexity because greedy behavior simply will not produce partnerships effectively in large groups.  ... 
doi:10.1142/s0219525912500877 fatcat:nayy2cmnybb7vnrr4g4ov2n7t4

Photochemistry of iron complexes

Juan Chen, Wesley R. Browne
2018 Coordination chemistry reviews  
been overshadowed by ruthenium polypyridyl complexes since the 1970s.  ...  Although iron is among the most abundant of the bio-essential transition metals and its coordination chemistry is of central importance to bio-inorganic and bioinspired chemistry, its photochemistry has  ...  It is worth noting the earlier work of Toftlund, McGarvey and co-workers on the photochemistry of iron(II) polypyridyl complexes in which population of the 3 MC excited states lead to ligand dissociation  ... 
doi:10.1016/j.ccr.2018.06.008 fatcat:h262pvvfm5hafeuujds24pyzbe

Nurturing breakthroughs: lessons from complexity theory

D. Sornette
2008 Journal of Economic Interaction and Coordination  
In other words, bubbles, which are characteristic definitions of human activity, allow huge risks to get huge returns over large scales.  ...  We refer to and summarize a large bibliography covering our research efforts in the last decade, which present the relevant underlying mathematical tools and a few results involving positive feedbacks,  ...  They seem to result from self-organising systems which develop similar patterns over many scales, from the very small to the very large.  ... 
doi:10.1007/s11403-008-0040-8 fatcat:znthv6b3mjcpdkfp5uuz5tha3a

Structural chemistry of metal coordination complexes at high pressure

Jeremiah P. Tidey, Henry L.S. Wong, Martin Schröder, Alexander J. Blake
2014 Coordination chemistry reviews  
This review highlights and describes recent advances in high pressure studies of coordination complexes, many of which have been conducted at synchrotrons or other central facilities.  ...  Geometric, Coordinative, Conformational, Optical and other Changes with Pressure 2.1  ...  angles are similarly small.  ... 
doi:10.1016/j.ccr.2014.04.004 fatcat:ghwlks5dyzgbznf3l2izpsijiq

Coordination Analysis of Environmental and Social Problems in Transportation System

Zhiwen Chen, Wei Wang
2020 Complexity  
For workplace-based travel, it has a peak travel time showing large and small 2 trend peaks, which shows a small peak at noon, as travelers have to go home at noon. e demand for lunch breaks is the commuting  ...  Among them, the difference between CO and NOX is large which are both in 24.25-37.37, and the difference between PM 2.5 and PM 10 is small.  ... 
doi:10.1155/2020/6665318 fatcat:26typofnnjazrhgqoco7ivhnhu

Principal Component Analysis of Complex Multijoint Coordinative Movements

A. Forner-Cordero, O. Levin, Y. Li, S. P. Swinnen
2005 Biological cybernetics  
Traditionally, studies of coordination between two joints have predominantly made use of relative phase analyses.  ...  This has resulted in the identification of principal constraints that govern the Central Nervous System's organization and the control of coordination patterns.  ...  The first eigenvalue will explain a large amount of the population variance (more than 90%). • The components of the eigenvector associated with the first PC reflect the phase relation between the joint  ... 
doi:10.1007/s00422-005-0009-9 fatcat:gkdinuupcvfnjdr3tmr4k63usa

Principal component analysis of complex multijoint coordinative movements

A. Forner-Cordero, O. Levin, Y. Li, S.P. Swinnen
2005 Biological cybernetics  
Traditionally, studies of coordination between two joints have predominantly made use of relative phase analyses.  ...  This has resulted in the identification of principal constraints that govern the Central Nervous System's organization and the control of coordination patterns.  ...  The first eigenvalue will explain a large amount of the population variance (more than 90%). • The components of the eigenvector associated with the first PC reflect the phase relation between the joint  ... 
doi:10.1007/s00422-005-0582-y pmid:16021517 fatcat:k2edxg6slrfq7b4yefn3uvuipm

Tool-mediated coordination of virtual teams in complex systems

Michael Gilbert, Mark Zachry
2015 Proceedings of the 11th International Symposium on Open Collaboration - OpenSym '15  
Support for coordination in online spaces, specifically in peer production systems, has frequently been an after-thought.  ...  Our study, first, takes a theoretical approach to understanding how tool-mediated coordination functions within peer production systems.  ...  (individual, small group, or large collective) to operate on them effectively; and third, the mechanisms by which changes to the above objects are modified should be capable of being integrated back into  ... 
doi:10.1145/2788993.2789843 dblp:conf/wikis/GilbertZ15 fatcat:kgpjnyfnbjdf3cumljb7mlwxny

Taming the complexity of coordinated place and route

Jin Hu, Myung-Chul Kim, Igor L. Markov
2013 Proceedings of the 50th Annual Design Automation Conference on - DAC '13  
Hence, we develop Coordinated Placeand-Route (CoPR) with (i) a Lightweight Incremental Routing Estimation (LIRE) frequently invoked during placement, (ii) placement techniques that address three types  ...  Let S have coordinate (0, 0). (b) The partial costs of the first row and the center-left node have been populated.  ...  Placement-routing interface for coordinated place-and-route: • LIRE::Initialize() reads in the benchmark information, sets up the routing environment, and computes the static routingedge capacities (e.g  ... 
doi:10.1145/2463209.2488920 dblp:conf/dac/HuKM13 fatcat:xmricvygtjet7ics7bvpwjoxla

Navigating the complexities of coordinated conservation along the river Nile

J. R. Allan, N. Levin, K. R. Jones, S. Abdullah, J. Hongoh, V. Hermoso, S. Kark
2019 Science Advances  
We identify "hot spots" consistently selected as conservation priority areas across all collaboration scenarios, and provide a framework for improving return on conservation investment for large and complex  ...  While most Nile basin countries benefit from coordinating conservation planning, costs and benefits are unequally distributed.  ...  We demonstrate an approach that can be applied to other large and complex rivers that cross international boundaries, such as the Amazon, Colorado, Mekong, Danube, and others.  ... 
doi:10.1126/sciadv.aau7668 pmid:30949575 pmcid:PMC6447383 fatcat:ye3xzk65pbbwzjnozmbfccais4

Spectroscopic properties and design of highly luminescent lanthanide coordination complexes

G.F de Sá, O.L Malta, C de Mello Donegá, A.M Simas, R.L Longo, P.A Santa-Cruz, E.F da Silva
2000 Coordination chemistry reviews  
of the f-orbital interaction . . . the large coordination number seems to be a consequence of the relatively large size of the lanthanide ion' [47] .  ...  In order to obtain the most information from this probing, it would be important to have an approximate structure of Eu(III) coordinated to the doped polymer.  ... 
doi:10.1016/s0010-8545(99)00054-5 fatcat:6m7tj24tuzgzzb4lr6uo7xxwgm

Design of magnetic coordination complexes for quantum computing

Guillem Aromí, David Aguilà, Patrick Gamez, Fernando Luis, Olivier Roubeau
2012 Chemical Society Reviews  
A very exciting prospect in coordination chemistry is to manipulate spins within magnetic complexes for the realization of quantum logic operations.  ...  in targeting molecules containing a pair of well-defined and weakly coupled paramagnetic metal aggregates, each acting as a carrier of one potential qubit, (ii) the second is the design of dinuclear complexes  ...  The curve of the europium complex shows that the ground state of each metal is diamagnetic (J = 0), with some paramagnetic Stark levels populated at higher temperatures.  ... 
doi:10.1039/c1cs15115k pmid:21818467 fatcat:bylfetppwra2benqmc3uc3zyzm
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