Workflows

Search filter terms
Filter by type
Filter by user
Filter by licence
Filter by group
Results per page:
Sort by:
Showing 4 results. Use the filters on the left and the search box below to refine the results.
Type: WSVLAM
Uploader

Workflow Affimetrix microarray: part two (perm) (1)

Thumb
We use a permutation test to infer the significance of the differently expressed genes found by the ANOVA analysis. Permutation tests are computationally intensive, needing at least 1000 permutations per gene to obtain acceptable results. For large experiments, the in-built feature of running R/MAANOVA in a single cluster may not be enough. We are using WS- VLAM workflow management system [2] to create a Grid-enabled R/MAANOVA workflow (Grid-MAANOVA) that will simultaneously run in multiple c...

Created: 2008-12-05

Credits: User Zhiming Zhao

Uploader

Workflow Affimetrix microarray: part three (concat) (1)

Thumb
Collecting the results from the perumtation.

Created: 2008-12-05

Credits: User Zhiming Zhao

Uploader

Workflow Affimetrix microarray: part one (obs) (1)

Thumb
The R/MAANOVA package [1] is being adapted to carry out our computations. To enable R/MAANOVA to handle probe-sets with different probe numbers, which is necessary when using probe-set definitions other than the original one provided by Affimetrix, we will pre-process the input data by dividing it into groups, each group formed by genes reported by the same number of probes.

Created: 2008-12-05

Credits: User Zhiming Zhao

Uploader

Workflow Affymetrix Permutation-based Probe Level E... (1)

Thumb
Affymetrix Permutation-based Probe Level Estimation (APPLE). Goal: Because of its cost, microarray experiments are frequently designed using a relatively small number of biological or technical replicates. This can result in low statistical power when the number of differentially expressed genes is inferred. This worklfow investigates whether the statistical power of Affymetrix experiments can be increased, without the need to increase the number of hybridizat...

Created: 2010-04-13 | Last updated: 2010-04-14

Results per page:
Sort by: