Exact Bayesian inference for change point models with application to genomics
Duration: 54 mins 19 secs
Share this media item:
Embed this media item:
Embed this media item:
About this item
| Description: |
Robin, S (INRA - Institut National de la Recherche Agronomique)
Monday 03 February 2014, 14:00-15:00 |
|---|
| Created: | 2014-02-12 15:53 |
|---|---|
| Collection: | Inference for Change-Point and Related Processes |
| Publisher: | Isaac Newton Institute |
| Copyright: | Robin, S |
| Language: | eng (English) |
| Distribution: |
World
(downloadable)
|
| Explicit content: | No |
| Aspect Ratio: | 16:9 |
| Screencast: | No |
| Bumper: | UCS Default |
| Trailer: | UCS Default |
| Abstract: | We are interested in the evaluation of uncertainty in the location of change points. Because of the discrete nature of change points, standard statistical theory does not apply easily and only few asymptotic results are available to evaluate quantity of interest such as confidence intervals for change point locations. In a Bayesian framework, such quantities are often obtained via computationally demanding Monte-Carlo techniques. We will present a general Bayesian methodology to compute such quantities in an exact manner, with quadratic complexity. A parallel can be made between this approach and dynamic programming algorithms. This methodology allows to compute a series of posterior distributions, such as this of the total number of breakpoints or this of any change point location. Based on these results we will consider a Bayesian method to compare the location of change points in independent sequences. Eventually, this method will be used to compare the location of transcript boundaries in yeast under different growth condition. |
|---|---|
Available Formats
| Format | Quality | Bitrate | Size | |||
|---|---|---|---|---|---|---|
| MPEG-4 Video | 640x360 | 1.91 Mbits/sec | 778.29 MB | View | Download | |
| WebM | 640x360 | 558.32 kbits/sec | 222.18 MB | View | Download | |
| iPod Video | 480x270 | 489.7 kbits/sec | 194.82 MB | View | Download | |
| MP3 | 44100 Hz | 249.78 kbits/sec | 99.46 MB | Listen | Download | |
| Auto * | (Allows browser to choose a format it supports) | |||||