Name
Abstract | ||
|---|---|---|
Unsupervised class discovery in gene expression data relies on the statistical signals in the data to exclusively drive the results. It is often the case, however, that one is interested in constraining the search space to respect certain biological prior knowledge while still allowing a flexible search within these boundaries.We develop an approach to semi-supervised class discovery. One component of our approach uses clinical sample information to constrain the search space and guide the class discovery process to yield biologically relevant partitions. A second component consists of using known biological annotation of genes to drive the search, seeking partitions that manifest strong differential expression in specific sets of genes. We develop efficient algorithmics for these tasks, implementing both approaches and combinations thereof. We show that our method is robust enough to detect known clinical parameters in accordance with expected clinical values. We also use our method to elucidate cardiovascular disease (CVD) putative risk factors.MonoClaD (Monotone Class Discovery). See http:// bioinfo.cs.technion.ac.il/people/zohar/MonoClad/.Supplementary data is available at http://bioinfo.cs.technion.ac.il/people/zohar/MonoClad/software. html |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1093/bioinformatics/btn279 | ECCB |
Keywords | Field | DocType |
class discovery process,clinical parameter,supplementary data,semi-supervised class discovery,clinical value,unsupervised class discovery,gene expression data,clinical sample information,search space,flexible search | Data mining,Differential expression,Annotation,Algorithmics,Computer science,Artificial intelligence,Bioinformatics,Business process discovery,Monotone polygon,Machine learning,Gene expression profiling | Conference |
Volume | Issue | ISSN |
24 | 16 | 1367-4811 |
Citations | PageRank | References |
6 | 0.50 | 8 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Israel Steinfeld | 1 | 201 | 8.66 |
| Roy Navon | 2 | 121 | 5.48 |
| Diego Ardigò | 3 | 42 | 1.81 |
| Ivana Zavaroni | 4 | 42 | 1.81 |
| Zohar Yakhini | 5 | 940 | 128.95 |