LDA resources

February 28, 2026

Ganegedara, T. (2025, February 2). Intuitive Guide to Latent Dirichlet Allocation. Towards Data Science.
https://towardsdatascience.com/light-on-math-machine-learning-intuitive-guide-to-latent-dirichlet-allocation-437c81220158/

some blogs
https://johaupt.github.io/blog/Topic_modeling_with_Gibbs_sampling_in_R.html https://agustinus.kristia.de/blog/lda-gibbs/


RFA – MPI/PI NIH limit

February 28, 2026

the answer… from OSP…

The NIH limitation is by council round, rather than submission date. Council rounds can be found on the NIH standard due dates page: https://grants.nih.gov/grants-process/submit/submission-policies/standard-due-dates

Here is the policy info on the limitation:

https://grants.nih.gov/grants/guide/notice-files/NOT-OD-25-132.html

Some additional guidance (including a table to show which deadlines fit into which year) can be found on the OSP website: https://research-support.yale.edu/sponsored-projects/office-of-sponsored-projects/proposals

Calendar Year 2026

Advisory Council Dates Application Due Date Notes
January 5/25/25-9/7/25 Not included in the count
May 9/25/25-1/7/26 Included in CY 26 count
August or October 1/25/26-5/7/26 Included in CY 26 count

Calendar Year 2027

Advisory Council Dates Application Due Dates Notes
January 5/25/26-9/7/26 Included in CY 27 count
May 9/25/26-1/7/27 Included in CY 27 count
August or October 1/25/27-5/7/27 Included in CY 27 count

Receipt dates:
9/25/2025-5/7/26 6 max

Receipt dates:
5/25-2026 -5/7/27 6 max


list of wars us has fought in with number of casualties normalized by total us population at the time in comparison to deaths from covid and 1918 flu – Google Search

February 28, 2026

https://www.google.com/search?q=list+of+wars+us+has+fought+in+with+number+of+casualties+normalized+by+total+us+population+at+the+time+in+comparison+to+deaths+from+covid+and+1918+flu&sca_esv=ff5dab35acd38c25&biw=1318&bih=712&sxsrf=ANbL-n6pHKsOjlgCloXTjQkgQuqLi6LXXg%3A1772298844457&ei=XCKjabjRG6PQ5NoPpsKJgA0&ved=0ahUKEwi477zY1_ySAxUjKFkFHSZhAtAQ4dUDCBE&uact=5&oq=list+of+wars+us+has+fought+in+with+number+of+casualties+normalized+by+total+us+population+at+the+time+in+comparison+to+deaths+from+covid+and+1918+flu&gs_lp=Egxnd3Mtd2l6LXNlcnAilQFsaXN0IG9mIHdhcnMgdXMgaGFzIGZvdWdodCBpbiB3aXRoIG51bWJlciBvZiBjYXN1YWx0aWVzIG5vcm1hbGl6ZWQgYnkgdG90YWwgdXMgcG9wdWxhdGlvbiBhdCB0aGUgdGltZSBpbiBjb21wYXJpc29uIHRvIGRlYXRocyBmcm9tIGNvdmlkIGFuZCAxOTE4IGZsdUgAUABYAHAAeAGQAQCYAQCgAQCqAQC4AQPIAQD4AQGYAgCgAgCYAwCSBwCgBwCyBwC4BwDCBwDIBwCACAA&sclient=gws-wiz-serp QT:{{” The COVID-19 pandemic and the 1918 influenza pandemic resulted in higher U.S. death tolls than most foreign wars in American history. While COVID-19 surpassed the 1918 flu in raw numbers, the 1918 flu had a higher impact relative to the population at the time.
The following list ranks U.S. wars and pandemics by estimated total deaths, with normalized figures for context based on estimates of U.S. population at the time.
www.statnews.com +1
Comparison of US Deaths: Pandemics vs. Wars
Data based on estimates in
National Archives (.gov) +5
Event Total U.S. Deaths (Approx.)Approx. Pop. at TimeNormalized Impact (Per 100k)
1918 Flu Pandemic675,000~103 Million~655
COVID-19 Pandemic1,100,000+~330 Million~333
Civil War (1861-65)620,000–750,000~31-35 Million~1,700–2,100 World War II (1941-45)405,399~132-140 Million~290–307
World War I (1917-18)116,516~103 Million~113–126
Vietnam War58,220~200 Million~29–32
“}}


see you today at 1 pm for ARPA-H

February 27, 2026

We don’t have anything like this in Connecticut, but [useful].

https://maineindoorair.org/


NYTimes: What Your DNA Reveals About the Sex Life of Neanderthals

February 26, 2026

https://www.nytimes.com/2026/02/26/science/human-evolution-neanderthal-sex.html?smid=nytcore-ios-share


How Jane Austen revealed the economic basis of society

February 26, 2026

https://www.economist.com/christmas-specials/2025/12/12/how-jane-austen-revealed-the-economic-basis-of-society QT:{{” These numbers would all have meant something to Austen’s original readers, argues Mr Copeland, serving as a useful “shorthand” for rank and station. £100 a year was required to afford a single maidservant—“a stout girl of all works”. At £400, a household could employ a cook, housemaid and perhaps a boy servant.
Roughly £700-£1,000 a year was required to keep a carriage. With the help of Highbury’s hypochondriacs, this prize falls within the sights of Dr Perry in “Emma”. The higher income target of £2,000 is eventually met by Marianne in “Sense and Sensibility” when she marries Colonel Brandon. That amount will cover a “proper establishment of servants, a carriage, perhaps two”, and horses for hunting. To satisfy the greater demands of a Mary Crawford, eager for a second home in London, would take at least £4,000 a year. “}}


NYTimes: Super-Agers’ Brains Have a Special Ability, New Study Suggests

February 26, 2026

https://www.nytimes.com/2026/02/25/well/mind/super-agers-brain-neurons.html?smid=nytcore-ios-share


What Does the ‘New’ Definition of Obesity Mean to You? | News | Yale Medicine

February 25, 2026

https://www.yalemedicine.org/news/what-does-the-new-definition-of-obesity-mean-to-you?utm_source=YaleToday&utm_medium=email&utm_campaign=YT_YaleToday-Faculty_2-25-2026


Concepts, estimation and interpretation of SNP-based heritability – Nature Genetics

February 22, 2026

See Box 1, viz:

QT:{{”

Box 1 Statistical model used in the GREML approach to estimate hS2NP The statistical model used by GREML can be described in its simplest form as y = Wu + e
where y is an n x 1 vector of standardized phenotypes with n equal to the sample size, W = {wij} is an n x m standardized SNP genotype matrix where m is the number of SNPs, u = {ui} is an m x 1 vector of the additive effects of all variants when fitted jointly in the model, u ~ N(0,Iσ2) with I being an identity matrix, u and e is a vector of residuals, e ~ N(0,Iσ2). An equivalent model is….

y=g+e
g ~ N(0,A…)
A=W W’

In practice, A is called the SNP-derived genetic (or genomic) relationship matrix (GRM) and is estimated from the SNP data. The estimate …from GREML can be described as the estimated variance explained by all the SNPs (mσu) or equivalently as the estimated genetic variance by contrasting the phenotypic similarity
between unrelated individuals to their SNP-derived genetic similarity “}}

https://www.nature.com/articles/ng.3941

Yang, J., Zeng, J., Goddard, M. E., Wray, N. R., & Visscher, P. M. (2017). Concepts, estimation and interpretation of SNP-based heritability. Nature Genetics, 49(9), 1304–1310.
https://doi.org/10.1038/ng.3941


The Condo Market Hasn’t Been This Bad in Over a Decade – WSJ

February 22, 2026

https://www.wsj.com/economy/housing/the-condo-market-hasnt-been-this-bad-in-over-a-decade-9f3e7256?st=pN7PSL&reflink=article_gmail_share 10% down this year nationwide