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Last updated: 2018-07-20

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Rmd	4fc94bd	Jason Willwerscheid	2018-07-20	wflow_publish(c(“analysis/index.Rmd”, “analysis/flash_em.Rmd”))
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Rmd	f5379fa	Jason Willwerscheid	2018-07-16	wflow_publish(“analysis/index.Rmd”)
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Rmd	82c7cdd	Jason Willwerscheid	2018-07-15	wflow_publish(c(“analysis/index.Rmd”, “analysis/about.Rmd”))
html	76eacb7	Jason Willwerscheid	2018-07-15	Build site.
Rmd	f6928cc	Jason Willwerscheid	2018-07-15	wflow_publish(c(“analysis/index.Rmd”, “analysis/about.Rmd”))
Rmd	56d7ded	Jason Willwerscheid	2018-07-14	Start workflowr project.

In Progress

Note 1. Notes on computing the FLASH objective function. I derive an explicit expression for the KL divergence between prior and posterior.

Note 2. An alternate algorithm for optimizing the FLASH objective, using the explicit expression derived in the previous note.

Investigation 4. The alternate algorithm yields much different results from FLASH. In particular, the fits of the priors on the loadings are visibly different.

Archived

The bug causing the problem described in Investigations 1-3 was fixed in version 0.1-13 of package ebnm.

Investigation 1. The FLASH objective function can behave very erratically.

Investigation 2. This problem only occurs when using ebnm_pn, not ebnm_ash.

Investigation 3. The objective can continue to get worse as loadings are repeatedly updated. Nonetheless, convergence takes place (from above!).

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