You are cordially invited to attend this School of Informatics Colloquium.
Date: Tuesday, March 3, 2009
Time: 3:00 p.m.
Place: Persimmon Room, IMU
Ho-Lin Chen, California Institute of Technology, will present, "Robust Collective Behaviors Using Error-Prone Units."
Abstract:
There are many spectacular examples of collective behaviors in nature, ranging from the coordination of cells in a body to colonies of ants and bees to the whole ecological system. In many engineering applications such as molecular programming, swarm robotics and networking, we are also interested in controlling complicated collective behaviors using simple rules. One major challenge is to create a robust system since every unit is only loosely controlled. Performing error correction in such systems requires techniques different from the traditional methods since there is no centralized computation. In systems with collective behaviors, errors must be detected and corrected locally. In this talk, I will describe error correction methods in a collective behavior system called self-assembly. Self-assembly is the process where simple unit assemble into large, complex structures by themselves using simple local primitives. I will also describe a general framework on testing the validity of such error correction designs and some open problems for future research.
Thursday, February 26, 2009
Wednesday, February 25, 2009
Colloquium: Laurie Santos
Please join us for the first talk in this semester's Cognitive Science Colloquium Series:
March 9, 2009
4:00 p.m.
Psychology Building 101
Laurie Santos, Yale University, will present, "The Evolution of Irrationality: Insights from Non-Human Primates."
March 9, 2009
4:00 p.m.
Psychology Building 101
Laurie Santos, Yale University, will present, "The Evolution of Irrationality: Insights from Non-Human Primates."
Student Academic Center Workshops
The Student Academic Center will offer the following free workshops. Workshops are open to all students, and you do not need to sign up in advance to attend. However you are advised to arrive early to get seating. Questions may be directed to Sharon Chertkoff, Outreach Coordinator, Student Academic Center, 855-7313.
Monday, 3/2/09, Improving Reading Speed, 7:00-8:00 p.m., Briscoe Academic Support Center
Tuesday, 3/3/09, How To Ace Your Next Exam, 7:00-8:00 p.m., Teter TEF 258
Wednesday, 3/4/09, How To Ace Your Next Exam, 7:00-8:00 p.m., Ballantine Hall 231
Monday, 3/9/09, Emergency Test Preparation: A Systematic Approach to Cramming, 7:00-8:00 p.m., Forest Academic Support Center
Tuesday, 3/10/09, How To Master Essay Exams, 7:00-8:00 p.m., Teter TEF 258
Wednesday, 3/11/09, How To Master Essay Exams, 7:00-8:00 p.m., Ballantine Hall 231
Tuesday, 3/24/09, Making Groups Work for You, 7:00-8:00 p.m., Teter TEF 258
Wednesday, 3/25/09, Making Groups Work for You, 7:00-8:00 p.m., Ballantine Hall 231
Monday, 3/2/09, Improving Reading Speed, 7:00-8:00 p.m., Briscoe Academic Support Center
Tuesday, 3/3/09, How To Ace Your Next Exam, 7:00-8:00 p.m., Teter TEF 258
Wednesday, 3/4/09, How To Ace Your Next Exam, 7:00-8:00 p.m., Ballantine Hall 231
Monday, 3/9/09, Emergency Test Preparation: A Systematic Approach to Cramming, 7:00-8:00 p.m., Forest Academic Support Center
Tuesday, 3/10/09, How To Master Essay Exams, 7:00-8:00 p.m., Teter TEF 258
Wednesday, 3/11/09, How To Master Essay Exams, 7:00-8:00 p.m., Ballantine Hall 231
Tuesday, 3/24/09, Making Groups Work for You, 7:00-8:00 p.m., Teter TEF 258
Wednesday, 3/25/09, Making Groups Work for You, 7:00-8:00 p.m., Ballantine Hall 231
Colloquium: Johan Bollen
You are cordially invited to attend this colloquium:
Date: Friday, February 27, 2009
Time: 3:00 p.m.
Place: Informatics East (I2), Room 130
Johan Bollen, Los Alamos National Laboratory, will present, "Network models of science."
Abstract:
The dynamics of science as a social system have largely been studied from its final products, namely publications and the citations that they carry. While this approach has led to considerable progress in modeling scientific communication, it is also subject to particular disadvantages such as the effects of publication delays and sampling errors. In this presentation I outline a research program at the Los Alamos National Laboratory to study scientific activity from large-scale usage data logs that contain the online trails that scientists leave behind when they search and download articles from online services. From this data we construct models of scientific traffic that represent the collective flow of activity within the scientific community. The resulting usage graphs underpin efforts to map and detect scientific trends as well as advanced methods of evaluating the network status of various resources. I will provide an overview of these efforts and highlight recent results followed by a discussion of future research in this emerging domain.
Date: Friday, February 27, 2009
Time: 3:00 p.m.
Place: Informatics East (I2), Room 130
Johan Bollen, Los Alamos National Laboratory, will present, "Network models of science."
Abstract:
The dynamics of science as a social system have largely been studied from its final products, namely publications and the citations that they carry. While this approach has led to considerable progress in modeling scientific communication, it is also subject to particular disadvantages such as the effects of publication delays and sampling errors. In this presentation I outline a research program at the Los Alamos National Laboratory to study scientific activity from large-scale usage data logs that contain the online trails that scientists leave behind when they search and download articles from online services. From this data we construct models of scientific traffic that represent the collective flow of activity within the scientific community. The resulting usage graphs underpin efforts to map and detect scientific trends as well as advanced methods of evaluating the network status of various resources. I will provide an overview of these efforts and highlight recent results followed by a discussion of future research in this emerging domain.
Lecture: David Scott
You are cordially invited to attend the Flury Lecture.
Tuesday, March 3
4:00 - 5:00 p.m.
Swain East 140
Reception following the talk will be held at the Statistics House, 309
N. Park Avenue at 5:30 p.m.
David Scott, Noah Harding Professor of Statistics, Rice University, will present, "A Statistician Looks At Uncertainty."
Abstract:
Modern science relies on ever more complex models to understand data. Presenting the confidence of model predictions is a grand challenge. Faced with potentially hundreds or thousands of parameters, scientists often perform sensitivity analyses in order to assess the robustness of model predictions. Such one-at-a-time calculations are useful but limited. Visualization techniques can provide a fuller picture, but the availability of immersive technologies is still expensive and not commonplace. We examine some simple data and discuss the presentation of uncertainty. Avenues for research are described.
Tuesday, March 3
4:00 - 5:00 p.m.
Swain East 140
Reception following the talk will be held at the Statistics House, 309
N. Park Avenue at 5:30 p.m.
David Scott, Noah Harding Professor of Statistics, Rice University, will present, "A Statistician Looks At Uncertainty."
Abstract:
Modern science relies on ever more complex models to understand data. Presenting the confidence of model predictions is a grand challenge. Faced with potentially hundreds or thousands of parameters, scientists often perform sensitivity analyses in order to assess the robustness of model predictions. Such one-at-a-time calculations are useful but limited. Visualization techniques can provide a fuller picture, but the availability of immersive technologies is still expensive and not commonplace. We examine some simple data and discuss the presentation of uncertainty. Avenues for research are described.
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