Create a correlation matrix from the upper triangular elements

October 19, 2015
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Create a correlation matrix from the upper triangular elements

A recent question posted on a discussion forum discussed storing the strictly upper-triangular portion of a correlation matrix. Suppose that you have a correlation matrix like the following: proc iml; corr = {1.0 0.6 0.5 0.4, 0.6 1.0 0.3 0.2, 0.5 0.3 1.0 0.1, 0.4 0.2 0.1 1.0}; Every correlation […] The post Create a correlation matrix from the upper triangular elements appeared first on The DO Loop.

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Competing views on Argentina’s Frontrunner

October 19, 2015
By
Competing views on Argentina’s Frontrunner

The last poll published today by Polldata put Scioli below 40%, with about 5% reporting being undecided. It might be too early to state anything solid, but the few polls prospecting the runoff election in Argentina seem to be telling two distinct ...

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Competing views on Argentina’s Frontrunner

October 19, 2015
By
Competing views on Argentina’s Frontrunner

The last poll published today by Polldata put Scioli below 40%, with about 5% reporting being undecided. It might be too early to state anything solid, but the few polls prospecting the runoff election in Argentina seem to be telling two distinct ...

Read more »

Competing views on Argentina’s Frontrunner

October 19, 2015
By
Competing views on Argentina’s Frontrunner

The last poll published today by Polldata put Scioli below 40%, with about 5% reporting being undecided. It might be too early to state anything solid, but the few polls prospecting the runoff election in Argentina seem to be telling two distinct ...

Read more »

Competing views on Argentina’s Frontrunner

October 19, 2015
By
Competing views on Argentina’s Frontrunner

The last poll published today by Polldata put Scioli below 40%, with about 5% reporting being undecided. It might be too early to state anything solid, but the few polls prospecting the runoff election in Argentina seem to be telling two distinct ...

Read more »

Competing views on Argentina’s Frontrunner

October 19, 2015
By
Competing views on Argentina’s Frontrunner

The last poll published today by Polldata put Scioli below 40%, with about 5% reporting being undecided. It might be too early to state anything solid, but the few polls prospecting the runoff election in Argentina seem to be telling two distinct ...

Read more »

Explaining to Gilovich about the hot hand

October 18, 2015
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Explaining to Gilovich about the hot hand

X points me to this news article by George Johnson regarding the hot hand in basketball. Nothing new since the previous hot hand report (also Johnson follows the usual newspaper convention of not citing the earlier article in the Wall Street Journal, instead simply linking back to the Miller and Sanjurjo article as if it […] The post Explaining to Gilovich about the hot hand appeared first on Statistical Modeling,…

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Look at the Elections

October 18, 2015
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Look at the Elections

18 October 2015 On October 18, 2015, Swiss voters elect a new Parliament for the next four years. Source: https://www.bk.admin.ch/ More about Swiss elections here For the National Council (200 members), 3,802 candidates and more than 22 political parties take part. And the winners are … The polling stations closed at 12 AM. The results arrive canton by … Continue reading Look at the Elections

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Look at the Elections

October 18, 2015
By
Look at the Elections

18 October 2015 On October 18, 2015, Swiss voters elect a new Parliament for the next four years. Source: https://www.bk.admin.ch/ More about Swiss elections here For the National Council (200 members), 3,802 candidates and more than 22 political parties take part. And the winners are … The polling stations closed at 12 AM. The results arrive canton by … Continue reading Look at the Elections

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Statistical “reforms” without philosophy are blind (v update)

October 18, 2015
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Statistical “reforms” without philosophy are blind (v update)

Is it possible, today, to have a fair-minded engagement with debates over statistical foundations? I’m not sure, but I know it is becoming of pressing importance to try. Increasingly, people are getting serious about methodological reforms—some are quite welcome, others are quite radical. Too rarely do the reformers bring out the philosophical presuppositions of the criticisms and proposed […]

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Lee Sechrest

October 18, 2015
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Quantitative psychologist Lee Sechrest has passed away at the age of 86. Lee was a friend of the blog and we corresponded by email a bit during the past two years but I never had the privilege of meeting him. A wonderful obituary is here. As the saying goes, read the whole thing. Actually, I […] The post Lee Sechrest appeared first on Statistical Modeling, Causal Inference, and Social Science.

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Trying to optimize

October 18, 2015
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I wanted to try some more machine learning. On Kaggle there is a competition How Much Did It Rain? II. This is quite a bigger data set than Titanic. To quote from Kaggle:Rainfall is highly variable across space and time, making it notoriously tricky t...

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Athey and Imbens on Machine Learning and Econometrics

October 17, 2015
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Check out Susan Athey and Guido Imbens' NBER Summer Institute 2015 "Lectures on Machine Learning". (Be sure to scroll down, as there are four separate videos.) I missed the lectures this summer, and I just remembered that they're on video. Great s...

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In answer to James Coyne’s question, no, I can’t make sense of this diagram.

October 17, 2015
By
In answer to James Coyne’s question, no, I can’t make sense of this diagram.

We last encountered James Coyne in the context of skepticism about claims that talk therapy can halve the rate of cancer recurrence, and skepticism about claims that giving plants to old people can extend life (of the people, that is, not the plants). Now Coyne points us to a paper, “How positive emotions build physical […] The post In answer to James Coyne’s question, no, I can’t make sense of…

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A Talk About Campaign Finance in Brazil

October 17, 2015
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A Talk About Campaign Finance in Brazil

Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise receiving the invitation from Prof. Marcelo P...

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A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise receiving the invitation from Prof. Marcelo P...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise re...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise re...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn't know in advance about the existence of this seminar. Indeed, it was a big surprise ...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise re...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise re...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise re...

Read more »

A Talk About Campaign Finance in Brazil

October 17, 2015
By
A Talk About Campaign Finance in Brazil

Comments on campaign finance in brazil. Last week, I delivered a talk at University of Brasilia about my past research on the topic of campaign finance. I didn’t know in advance about the existence of this seminar. Indeed, it was a big surprise re...

Read more »


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