Possible Projects
I am happy to have small teams working on proects together, reading
and talking about papers, trying different approaches, ect.
In terms of project choices,
you should work on something related to your research or planned
research area. I can help you focus in on some good papers to read
and maybe some questions to think about or experiment with. Please
talk to me.
If nothing immediately springs to mind, here are
some comparatively well-thought-out
projects I think might lead to papers. These are areas my students,
my colleagues and I are
currently working in.
-
ChengCheng Hu:
There has been interest lately in computer graphics in producing
high-quality tetrahedral meshes by placing the vertices nicely and
then taking the Delaunay triangulation.
One method centers on a particular
mesh-smoothing technique. While it works well in practice, there
are no theoretical results connecting the method to any "nice"
properties of the triangulation. In 2D, we could instead
explictly place vertices
so as to maximize the minimum angle, which should make lovely triangle meshes.
We wrote a
paper
many years ago describing how to do this
using LP-type algorithms.
- Fatemeh Abbasinejad, Shubho Sengupta:
There is a
construction, due to Erickson,
of a set of points on a smooth surface in
R3 with a Delaunay triangulation of size O(n^3/2).
Make a conjecture about how this example extends to higher dimensions,
and prove it, or test it experimentally.
-
Paul Mach, Shengyin Gu:
We will study an interesting structure called the
mixed complex, used for modeling molecules.
Point location in Delaunay triangulations is well studied,
in Voronoi diagrams less so.
What can we prove about point location in the mixed complex?
What would be the best approach in practice?
One good approach might be jump and walk.
-
Ranjan Pal, Wei Yu:
Nearest-neighbors in high-dimensional space.
One now-classic algorithm is Locality-sensitive hashing.
From this page, I would recommend the book chapter and the GIM'99 paper.
- Anna Tikhonova, Michael Ogawa: Large graph layout.
Some papers that look substantial and interesting:
A multi-dimensional approach to force-directed layouts of large graphs
FADE: Graph Drawing, Clustering, and Visual Abstraction
A fast multi-scale method for drawing large graphs
- Michael Byrd: Kinetic algorithms. Reading?
- David Haws: Minimum-weight triangulation approximation.
- Dan Alcantara: Path planning in animation?
- Kenny Huang:??
- Eddie Kim:??
Here is a well-known hard problem, worth studying:
- Find examples of four-dimensional polytopes, or three-dimensional
spatial decompositions, with many faces and edges but few vertices and
cells. See Jeff Erickson's page
on intricate polytopes. This is a hard problem, so a reasonable project would be to
study and write a survey paper on the results know so far.