Difference between revisions of "EECI08: Information Flow and Consensus"

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{{eeci-sp08 header|next=[[NCS: Distributed Estimation and Control|Distributed Control]]|prev=[[NCS: Packet-Based Estimation and Control|Packet-Based Control]]}}
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{{eeci-sp08 header|next=[[EECI08: Distributed Estimation and Control|Distributed Control]]|prev=[[EECI08: Packet-Based Estimation and Control|Packet-Based Control]]}}
  
 
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This lecture gives an introduction to some concepts and tools in graph theory.  After giving the basic definitions of graphs and properties of graphs, we introduce the Laplacian of a matrix and discuss its properties and uses.  Special emphasis is placed on the eigenvalues of the Laplacian, including the bounding of those eigenvalues using the Gershgorin disk theorem.  The consensus problem is introduced as an example of the use of the basic concepts.
 
This lecture gives an introduction to some concepts and tools in graph theory.  After giving the basic definitions of graphs and properties of graphs, we introduce the Laplacian of a matrix and discuss its properties and uses.  Special emphasis is placed on the eigenvalues of the Laplacian, including the bounding of those eigenvalues using the Gershgorin disk theorem.  The consensus problem is introduced as an example of the use of the basic concepts.
  
====  Lecture Materials ====
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==  Lecture Materials ==
 
* Lecture slides: {{eeci-sp08 pdf|L8_graphtheory.pdf|An Introduction to Graph Theory}}
 
* Lecture slides: {{eeci-sp08 pdf|L8_graphtheory.pdf|An Introduction to Graph Theory}}
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** Some students had troubles print these due to font issues.  Here is a {{eeci-sp08 pdf|L8_graphtheory-scan.pdf|scan}} of the notes in case you can't get them to print.
  
==== Additional Information ====
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== Reading ==
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*<p>[http://www.amazon.com/exec/obidos/ASIN/0387952209/drgordonroyle/002-0302673-7388830 Algebraic Graph Theory] G. Royle and C. Godsil, Springer, Graduate Texts in Mathematices, 2001. </p>
  
==== Further Reading ====
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*<p>[http://www.cds.caltech.edu/~murray/papers/2003f_om04-tac.html Consensus problems in networks of agents with switching topology and time-delays], R. Olfati-Saber and R. M. Murray, IEEE Transactions on Automatic Control, vol. 49, 1520-1533, Sept. 2004. A good reference for continuous time consensus algorithms. </p>
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*<p>[http://www.seas.upenn.edu/~jadbabai/papers/JadLiMorseTAC_June03.pdf Coordination of groups of mobile autonomous agents using nearest neighbor rules], A. Jadbabaie, J. Lin, and A. S. Morse, IEEE Transactions on Automatic Control, Vol. 48, No. 6, June 2003, pp. 988-1001. A good reference for discrete time consensus algorithms and theoretical explanation for consensus of multi-agent systems using nearest neighbor rules.</p>

Latest revision as of 20:26, 1 March 2009

Prev: Packet-Based Control Course home Next: Distributed Control

This lecture gives an introduction to some concepts and tools in graph theory. After giving the basic definitions of graphs and properties of graphs, we introduce the Laplacian of a matrix and discuss its properties and uses. Special emphasis is placed on the eigenvalues of the Laplacian, including the bounding of those eigenvalues using the Gershgorin disk theorem. The consensus problem is introduced as an example of the use of the basic concepts.

Lecture Materials

Reading