Skip to main content
Figure 2 | BMC Bioinformatics

Figure 2

From: Sample phenotype clusters in high-density oligonucleotide microarray data sets are revealed using Isomap, a nonlinear algorithm

Figure 2

Isomap analysis of the spinal cord injury data set. Three-dimensional Isomap models were generated from 170 rat high density oligonucleotide arrays with 8,799 genes on each array as described in Systems and Methods. Samples were classified based on the A: time, B:location, and C:severity of the spinal cord injury. Sphere diameters express the 95 percentile distance from the nearest neighbor within the group. Neighborhood size: k = 3. D: Residual variance after the application of Isomap, MDS, and PCA models. See text for more detail. Animated images are presented in Additional Files 1, 2, 3.

Back to article page

BMC Bioinformatics

ISSN: 1471-2105

Contact us