Recent Posts

Kodjo ML

less than 1 minute read

Geometric Deep Learning Models Generalize Deep Neural models to non-Euclidean domains Graph Neural Network class of neural networks for processing d...

pandoc command reference

less than 1 minute read

A useful starting point. To go from markdown to pdf: -C -N -s SOURCEFILE.md -o OUTPUTFILE.pdf The -C is short for --citeproc and the -N is short for --nu...

Map copyright

3 minute read

If you trace a coastline from a accurate copyrighted map , does your tracing constitute a derivative work of the original map? Maps themselves are explictl...

Onion cultivars

less than 1 minute read

We harvested a giant onion, over one meter in length. But I am worried it is a perennial, so I am trying to find out its cultivar. One possiblity, looking ...

Magia Naturalis

33 minute read

Magia Naturalis is a book from 1558, and translated into English translated into English in 1658 under the title Natural Magick. It’s about, well, “natural m...

Civil Asset Forfeiture and Madoff

5 minute read

A factoid I heard from John Oliver is that Police steal more from people (via civil asset forfeiture) than criminals do. Is this true? Kind of. It’s truthyi...

Public Domain years

3 minute read

Looking through public domain vectors on Openclipart I came across this site alleging to host comics in the public domain. But these comics are from the 50s...

plastic waste

less than 1 minute read

Turns out US and Europe are doing very well at handling plastic waste, releasing less than 1% into the ocean. 36% comes from Phillipines alone. (!) Almost e...

Sean Bassler and REne Leon presentations

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Christian MoserFatih says his papers is really good. Why has worker heterogeneity increased? Segregation and sorting. Explain over half of increase in vari...

fatihapril26

1 minute read

Monte carlo integration overused fatih uniform sequence stochastic optimization book Stochastic Global Optimization Developments in hasman sequences Fati...

UMN banned from Linux kernel

11 minute read

Hey there, this entire blog is just for personal use, and you shouldn’t be here. This was written in a mentally compromised state. After checking over its c...

Thanksgiving and the Pequot massacre

4 minute read

Saw somebody online claim thanksgiving had a white supremacist origin. I thought “wait, isn’t Edward Winslow’s account of Thanksgiving a rare example of anti...

regulatory bugs

less than 1 minute read

Examples of well meaning policies interacting in unforeseen ways to cause bad outcomes. Texas power outage 2021. Company offers cheap wholesale power. Go...

Why has nuclear power been a flop

10 minute read

Why has nuclear power been a flop? A blogpost summary of the book by Jack Devanney. Which makes this a summary of a summary… Hrm… Need to at least triple...

Fatih Lecture 5 Optimization

2 minute read

When you estimate parameters, there will be some free ones left over. Howe do we calibrate these floating parameters? Empirical estimates of risk aversion ...

Really Uncertain Business Cycles

3 minute read

Bloom, N., Floetotto, M., Jaimovich, N., Saporta‐Eksten, I., & Terry, S. J. (2018). Really uncertain business cycles. Econometrica, 86(3), 1031-1065. ...

Fluctuations in uncertainty

5 minute read

Bloom, Nicholas (2014). “Fluctuations in uncertainty.” Journal of Economic Perspectives 28, no. 2: 153-76. A summary of the recent rise in research into...

Federal Statistical Research Data Centers

less than 1 minute read

Secure computing labs for conducting statistical analysis on non-public data collected by various public agencies. Managed by Census Bureau Minnesota RDC ...

Wage Inequality and Segregation by Skill

5 minute read

Kremer, M., & Maskin, E. (1996). Wage inequality and segregation by skill (No. w5718). National bureau of economic research. Link growing wage gap...

Spread of epidemic disease on networks

9 minute read

Newman, M. E. (2002). Spread of epidemic disease on networks. Physical review E, 66(1), 016128. Epidemic behavior usually shows a phase transition with...

farming

1 minute read

Enclosure Basic story: England used to have fuedal lands, where the tenants have to pay rents and do labor to grow food for the lord, and also they could...

Walmart expansion

2 minute read

Rene M Diaz De Leon giving presentation about Firms and Space Where build new plant? Holmes 2011, Oberfeld 2020 Firm geography and...

changing secual activity and HIV prevalence

3 minute read

Kremer, M., & Morcom, C. (1998). The effect of changing sexual activity on HIV prevalence. Mathematical biosciences, 151(1), 99-122. From 1, in a simp...

Cool to be smart smart to be cool

4 minute read

Bursztyn, L., Egorov, G., & Jensen, R. (2019). “Cool to be smart or smart to be cool? Understanding peer pressure in education.” The Review of Economic ...

Economically Important Plant Families

7 minute read

Super Tier Grasses (Poaceae) Maize, wheat, rice, and other grains provide the majority of dietary energy for humanity. Bamboo, reeds, and straw are c...

Importing Inkscape land shapes into QGIS

2 minute read

There are lots of guides online for taking a QGIS map, exporting it to a vector format, and then using Inkscape to clean it up and make it pretty. But I wan...

rahman advice

less than 1 minute read

Honest work. Being creative. Alkene and demsetz. One of the last non-mathy papers. One of top papers in aer. Read and contributed something. In times of do...

Fertility, mortality, migration

6 minute read

Fertility, mortality, migration, and population scenarios for 195 countries and territories from 2017 to 2100: a forecasting analysis for the Global Burden o...

Credit and Labor market frictions

1 minute read

Twinkies anecdote Twinky going bankrupt. Tries to negotiate with union. Union says no. Twinky fails. Euro stock markets very small. Maybe because if c...

Uncertainty and Recessions

1 minute read

In class, Fatih mentioned the new field of research into business cycles as characterized by “second moment shocks” (variance, uncertainty) as opposed to fir...

Hurricane Intensity

less than 1 minute read

Just read this artcile with specifci complaints about historic hurricane intensity. Complains about using economic losses to impute climate variables. Fits ...

Automation and Jobs class

less than 1 minute read

“Software is eating the world” Software invades an industry, consumes the incumbants that can’t adapt. Happening to cars right now. That’s Tesla’s edge. So...

Malaria vaccine

less than 1 minute read

Most important news of the year. Potential vaccine for Malaria. Previous vaccine only 30% effective. Why? The parasite has a protein that inhibits immune s...

Griddy and electricity in Texas

1 minute read

Griddy is company in Texas that charges flat fee for access to wholesale electricity. on average cheaper but exposes buyer to volatility of electricity ...

How to give seminar talk

less than 1 minute read

Your Audience does not care about your topic. You have 2 minutes to change their minds. Assume the audience is about to leave. Make sure they walk out with ...

Poisson Games

8 minute read

Original prompt from Peter Pusztai I was wondering if Poisson games would be a good way. For example the following. You could have players, the exact num...

CIE UV disinfection

less than 1 minute read

Interesting little video here. UV-C radiation can be used to disinfect surfaces Chemical and heat sterilization is preferred in most cases because ...

pickens unions talk

1 minute read

He’s trying to build a model to explain why unionization is decreasing in the US and elsewhere. His story is that increasing gaps in skill difference betwee...

Mahdi Data Economy

3 minute read

Motivation Market Concentration is up. Labor share is down. Business dynamism is down. Value of data is large and rising. Values of data...

Ancient Egyptian conception of the soul

1 minute read

To summarize this page, these are the pieces of the soul, according to ancient Egyptians: Khet The physical form, the body. Preserved via mummification...

More notes about colors

3 minute read

Previous post talked about math of color perception. But what are colors called? Universal color names Basic Colour Terms. Berlin and Kay (1969) argue c...

LASSO

4 minute read

Murphy Machine Learning index entry lasso, 431, 470, 562, 936. ESL index entry Lasso, 68–69, 86–90, 609, 635, 636, 661, fused, 666. In pdf, need t...

color spaces

12 minute read

Short version: RGB values do not linearly coorespond to light intensity Our eyes respond more strongly to green light. These two factors combined mean...

rambling about misinformation and encryption.

2 minute read

Here’s the post that provoked this. The apps offer “end to end encryption,” which is a jargony way to describe messages that get scrambled to become inde...

Fatih Rene Leon Skewness

2 minute read

project Learn to apply lasso or something liek that annual wage earnings of individual = some function of observables Egor sent out training sample. RHS ...