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RESEARCH
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Liz Bradley
Research Interests:
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Artificial Intelligence: computer tools that
autonomously analyze and/or design things. |
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Nonlinear Dynamics: techniques for characterizing
and exploiting the unique properties of chaos. |
Artificial intelligence projects:
- MotionMind & Chaographer: using
machine learning and the dynamics of chaos to generate human motion
sequences.
- ACE: an argumentation system that helps geologists deduce
the age of a landform, given samples of rocks from that landform.
- PRET, a computer program that deduces
the internal dynamics of a nonlinear black-box system solely from
observations of its outputs, automating the process known to control
theorists as system identification.
- Feature recognition in scientific data
sets: computer tools for recognizing when a numerical simulation
is going bad, when an atmospheric data set contains a hurricane, when
two photos of the sky show the emergence of a supernova, etc.
Nonlinear dynamics projects:
- The nonlinear dynamics of computer performance
- Flow control: intentionally inducing,
suppressing, and "guiding" chaotic flows in a fluid using
micromachined flaps in the boundary layer of a jet.
- Human movement: using chaos to
generate variations on human movement sequences. (This project
straddles the areas of artificial intelligence and nonlinear dynamics,
so it is listed under both areas.)
- Control of internet attacks using
nonlinear dynamics, stochastic models, and control theory.
- Recurrence plots: a visualization tool
that brings out correlations in time-series data.
- Computational topology: techniques
for describing the connectedness properties of an object, using only
discrete data about that object.
- Phase-locked loop: using chaos to improve
the capture range of a common and useful electronic circuit.
Here's a webcast of a talk
that hits some of the high points of this stuff.
Many of the links on this page point to documents that describe
current research opportunities, ranging from one-semester
undergraduate research projects, through M.S. and Ph.D. theses, to
postdoctoral appointments. Please contact me if you're interested!
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