Large matrices in SAS/IML 14.1

July 31, 2015
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Large matrices in SAS/IML 14.1

Last week, SAS released the 14.1 version of its analytics products, which are shipped as part of the third maintenance release of 9.4. If you run SAS/IML programs from a 64-bit Windows PC, you might be interested to know that you can now create matrices with about 231 ≈ 2 […] The post Large matrices in SAS/IML 14.1 appeared first on The DO Loop.

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Milan EXPO: further thoughts

July 30, 2015
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Milan EXPO: further thoughts

I promised to blog more about the Milan EXPO so this is it. My first reactions were recorded here. (link) This post is primarily intended for those who are planning a visit. Orientation One of the smartest design decisions is...

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Autonomous killing machines won’t look like the Terminator…and that is why they are so scary

July 30, 2015
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Autonomous killing machines won’t look like the Terminator…and that is why they are so scary

Just a few days ago many of the most incredible minds in science and technology urged governments to avoid using artificial intelligence to create autonomous killing machines. One thing that always happens when such a warning is put into place is you see the inevitable Terminator picture:     The reality is that robots that

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“Women Respond to Nobel Laureate’s ‘Trouble With Girls’”

July 30, 2015
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Someone pointed me to this amusing/horrifying story of a clueless oldster. Some people are horrified by what the old guy said, other people are horrified by how he was treated. He was clueless in his views about women in science, or he was cluelessly naive about gotcha journalism. I haven’t been following the details and […] The post “Women Respond to Nobel Laureate’s ‘Trouble With Girls'” appeared first on Statistical…

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But I Don’t Want to Be a Statistician!

July 29, 2015
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But I Don’t Want to Be a Statistician!

"For a long time I have thought I was a statistician.... But as I have watched mathematical statistics evolve, I have had cause to wonder and to doubt.... All in all, I have come to feel that my central interest is in data analysis...."Opening paragrap...

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Telling What’s True About Power, if practicing within the error-statistical tribe

July 29, 2015
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Telling What’s True About Power, if practicing within the error-statistical tribe

Suppose you are reading about a statistically significant result x (at level α) from a one-sided test T+ of the mean of a Normal distribution with n iid samples, and (for simplicity) known σ:   H0: µ ≤  0 against H1: µ >  0.  I have heard some people say [0]: A. If the test’s power to detect alternative µ’ is very low, then […]

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What’s the stupidest thing the NYC Department of Education and Columbia University Teachers College did in the past decade?

July 29, 2015
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Ummm, how bout this: The principal of a popular elementary school in Harlem acknowledged that she forged answers on students’ state English exams in April because the students had not finished the tests . . . As a result of the cheating, the city invalidated several dozen English test results for the school’s third grade. […] The post What’s the stupidest thing the NYC Department of Education and Columbia University…

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Odds ratio plots with a logarithmic scale in SAS

July 29, 2015
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Odds ratio plots with a logarithmic scale in SAS

I recently read an argument by Andrew Wheeler for using a logarithmic axis for plotting odds ratios. I found his argument convincing. Accordingly, this blog post shows how to create an odds ratio plot in SAS where the ratio axis is displayed on a log scale. Thanks to Bob Derr […] The post Odds ratio plots with a logarithmic scale in SAS appeared first on The DO Loop.

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Introducing: The Open Science Committee at our department

July 28, 2015
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Large-scale replication projects of the last years (e.g., ManyLabs I, II, and III, Reproducibility Project: Psychology) showed that the “replication crisis” in psychology is more than just hot air: According to recent estimates, ~60% of cur...

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I loved this %>% crosstable

July 28, 2015
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I loved this %>% crosstable

This is a public tank you for @heatherturner's contribution. Now the SciencesPo's crosstable can work in a chain (%>%) fashion; useful for using along with other packages that have integrated the magrittr operator. > candidatos %>% + filter(desc_cargo == 'DEPUTADO ESTADUAL'| desc_cargo =='DEPUTADO DISTRITAL' | desc_cargo =='DEPUTADO FEDERAL' | desc_cargo =='VEREADOR' | desc_cargo =='SENADOR') %>% … Read More →

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Slowing things down

July 28, 2015
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Slowing things down

Every week there's another top 10 list of some sort. Top 10 brunch spots, top 10 countries to visit, and top 10 reasons to vote for the Donald. In this episode, I provide my own top 10 list - this one, for places to live!

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Pluto: To Catch an Icy King

July 28, 2015
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Pluto: To Catch an Icy King

Sly as a fox, it is. Mysterious and diminutive, it has eluded us for decades. Despite what we've learned about Pluto, constant debate continues to rage over its classification. From the moment it was discovered, astronomers have bickered over this icy ...

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Goals for the New R Consortium

July 28, 2015
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Goals for the New R Consortium

by Bob Muenchen The recently-created R Consortium consists of companies that are deeply involved in R such as RStudio, Microsoft/Revolution Analytics, Tibco, and others. The Consortium’s goals include advancing R’s worldwide promotion and support, encouraging user adoption, and improving documentation … Continue reading →

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Announcing the JHU Data Science Hackathon 2015

July 28, 2015
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We are pleased to announce that the Department of Biostatistics at the Johns Hopkins Bloomberg School of Public Health will be hosting the first ever JHU Data Science Hackathon (DaSH) on September 21-23, 2015 at the Baltimore Marriott Waterfront. This event will be an opportunity for data scientists and data scientists-in-training to get together and

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“We can keep debating this after 11 years, but I’m sure we all have much more pressing things to do (grants? papers? family time? attacking 11-year-old papers by former classmates? guitar practice?)”

July 28, 2015
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Someone pointed me to this discussion by Lior Pachter of a controversial claim in biology. The statistics The statistical content has to do with a biology paper by M. Kellis, B. W. Birren, and E.S. Lander from 2004 that contains the following passage: Strikingly, 95% of cases of accelerated evolution involve only one member of […] The post “We can keep debating this after 11 years, but I’m sure we…

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Excel and R Data

July 28, 2015
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If you struggle to switch data between R and Excel , then here is something that will help. Excel and R Getting data from Excel into R is typically accomplished by one of the many data import R packages. These work well for repetitive data import and e...

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Notes from the 3rd R in Insurance Conference

July 28, 2015
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Notes from the 3rd R in Insurance Conference

Photo: Arthur CharpentierThe R in Insurance conference in Amsterdam was a sold out success! Congratulations to the organising committee at the University of Amsterdam, and many thanks to our sponsors:Milliman, RStudio, CYBAEA, Deloitte, a.s.r., Triple ...

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Statistical Models of Judgment and Choice: Deciding What Matters Guided by Attention and Intention

July 27, 2015
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Statistical Models of Judgment and Choice: Deciding What Matters Guided by Attention and Intention

Preference begins with attention, a form of intention-guided perception. You enter the store thirsty on a hot summer day, and all you can see is the beverage cooler at the far end of the aisle with your focus drawn toward the cold beverages that you im...

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Egyptian fractions [Le Monde puzzle #922]

July 27, 2015
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Egyptian fractions [Le Monde puzzle #922]

For its summer edition, Le Monde mathematical puzzle switched to a lighter version with immediate solution. This #922 considers Egyptian fractions which only have distinct denominators (meaning the numerator is always 1) and can be summed. This means 3/4 is represented as ½+¼. Each denominator only appears once. As I discovered when looking on line, […]

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Efficient accumulation in R

July 27, 2015
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Efficient accumulation in R

R has a number of very good packages for manipulating and aggregating data (plyr, sqldf, ScaleR, data.table, and more), but when it comes to accumulating results the beginning R user is often at sea. The R execution model is a bit exotic so many R users are very uncertain which methods of accumulating results are … Continue reading Efficient accumulation in R

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Ripped from the pages of a George Pelecanos novel

July 27, 2015
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Ripped from the pages of a George Pelecanos novel

Did anyone else notice that this DC multiple-murder case seems just like a Pelecanos story? Check out the latest headline, “D.C. Mansion Murder Suspect Is Innocent Because He Hates Pizza, Lawyer Says”: Robin Flicker, a lawyer who has represented suspect Wint in the past but has not been officially hired as his defense attorney, says […] The post Ripped from the pages of a George Pelecanos novel appeared first on…

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Statbusters are back, taking on robots that hire people

July 27, 2015
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In our newest column, we take on the recent media obsession with companies who make robots that hire people. (link) As with most articles about data science, the journalists failed to dig up any evidence that these robots work, other than glowing quotes from the people who are selling these robots. We point out a number of challenges that such algorithms must overcome in order to generate proper predictions. We…

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Rebonato on Bond-Yield Econometrics

July 27, 2015
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Riccardo Rebonato (R) has a fascinating new paper, which builds on important earlier work of Cieslak and Povala (2010) (CP). The cool thing about CP is the way it advances and blends certain aspects of both the spanning literature ("all infor...

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