Welcome to Cyber-T
Cyber-T is a statistics program with a web interface that can be conveniently used on high-dimensional array data for the identification of statistically significant differentially expressed genes. It employs statistical analyses based on simple t-tests that use the observed variance of replicate gene measurements across replicate experiments, or regularized t-tests that use a Bayesian estimate of the variance among gene measurements within an experiment. Cyber-T also contains a computational method (PPDE) for estimating experiment-wide false positive and negative levels based on the modeling of p-value distributions. [ Background of Cyber-T ]
Please send us email if you have any questions, or want to report any bugs or problems with the server.
(2011-12-31) NEW VERSION of CyberT - We have recently made some large changes to CyberT. While most of the changes are simply adding functionality, some of the parameters have changed. If you have used CyberT before, the input parameters may have changed. Major additions include:
- A one-way ANOVA analysis using the Bayesian regularized variance estimates.
- Generalization of the framework to handle the extreme case of a single replicate in an experimental condition.
- Normalization methods, ability to use PPDE in all analyses, and other multiple hypothesis testing conditions.
- Example datasets and workflows for analysis of other high-throughput data (i.e., protein array or quantitative mass spectrometry data).
| Paired Data | Use this program to analyze 2-dye data such as that generated by glass slide arrays probed with cy3/cy5-labelled cDNA. |
| Control+Experimental | Use this program to analyze experiments with separate control and experimental data sets. |
| One-Way ANOVA | Use this program to analyze experiments with more than two experimental conditions. |
| PPDE | Use this stand-alone program to model p-value distributions to obtain PPDE values for target measurements. |
| Download | R code for Bayes T-test, Paired T-test and One-Way ANOVA |
| Help | FAQ's, troubleshooting and information on using and downloading Cyber-T. To report a bug in the programs or the web interface, please contact the Cyber-T Helpdesk. |
| Microarray Datasets | This webpage provides links to datasets that contain DNA microarray gene expression data. If you are looking for the example datasets from the pages, see the examples help section. |