Project Leader
Justin W Rachels
MSc, School of Informatics, Univ. of Edinburgh
|
Project Supervisor
Sethu Vijayakumar, PhD
IPAB, School of Informatics, Univ. of Edinburgh |
Project Title
Dimensionality Reduction Techniques: Algorithm Analysis and
Investigation
Project Goal
Dimensionality Reduction and Manifold Learning are critical concerns
for many of the subfields of Artificial Intelligence, from applied
visual pattern recognition to knowledge-base data compression. As
such, there has been much attention to improving the classical
algorithms used for minimising the dimensionality of a data set.
Many of these algorithms work impresively well on complicated-seeming
examples presented in seminal papers and some seem to be designed for
special situations which demand algorithmic modifications-- we would
like to be able to test these algorithms on a neutral data set
including realistic distributions and determine their applied
comparative usefulness as well as attempting, if possible, to combine
the greatest strengths of the algorithmic developments thus far in the
field, knowledge of when exactly certain techniques are most useful,
and algorithmic techniques from related statistical analysis subfields
in order to create a strong hybrid algorithm or toolbox. Also
under consideration are any applications such a hybrid technique might
motivate in some subfields of Artificial Intelligence (of specific
concern are agent-based knowledge systems).
To specify the goal-concerns of this project,:
- Research
and implement (in Matlab) classical algorithms (PCA, MDS, Isomap, LLE)
- Investigate
and implement, where useful, recent modifications of classical
algorithms
- Compare
implemented methods with other related statistical analysis fields and
techniques
- Create
neutral test suite
- Compare
and analyse behaviours of implemented algorithms
- Conjecture
and test hybrid algorithms and techiniques
Project Timeline
Time Frame |
Task (completed or
scheduled) |
10 May 04 - 16 May 04 |
background research for pca, mds; linear algebra review
for relevant methods
|
17 May 04 - 23 May 04 |
matlab implementation of pca, mds
|
24 May 04 - 30 May 04 |
background research for isomap
|
31 May 04 - 06 June 04 |
matlab implementation of isomap
|
07 June 04 - 13 June 04 |
background research for lle
|
14 June 04 - 20 June 04 |
matlab implementation
of lle
|
21 June 04 - 27 June 04 |
neutral data set
creation and testing
|
28 June 04 - 11 July 04 |
research and
implementation of extensions to isomap and lle
|
12 July 04 - 25 July 04 |
research and
implementation of auxiliary methods
|
26 July 04 - 01 Aug. 04 |
method testing and
analysis
|
02 Aug. 04 - 15 Aug. 04 |
hybridisation
implementation and testing
|
16 Aug. 04 - 29 Aug. 04 |
implementation of
implications for applicative senses of findings
|
Project Results & Conclusions
Thesis
|