Home » Posts tagged "Measurement"

This time we’ll do differently, promise

The B-21’s core design initiative has been to use mature and semi-mature components and subsystems not only to lower risk and to decrease development time and costs, but also to better ensure support for the aircraft over time. Although many look to history to predict...
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Yes, we should keep our data for a long time

  Modern ethos is that all data is valuable, should be stored forever, and that machine learning will one day magically find the value of it. You’ve probably seen that EMC picture about how there will be 44 zettabytes of data by 2020? Remember how...
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Dealing with the Uncertainty in Scientific Results

MOST EVIDENCE IN the empirical sciences is statistical in nature, and scientists rely on a variety of statistical tests to distinguish valid scientific discoveries from spurious ones. Unfortunately, there is a growing recognition that many important research findings based on statistical evidence are not reproducible,...
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Doing The Impossible By Using Simple Math

This is not to say Musk will realize his most ambitious goals: landing on Mars, electrifying much of the world’s transportation fleet, and accelerating the transition from a fossil-fuel to a carbon-free economy. But each is closer than most thought possible in such a short...
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Keeping it Simple for a Reason

However, data will also exhibit idiosyncrasies that result from the randomness in the process of data sampling and do not say anything about the process that generated them—these idiosyncrasies will disappear if we resample new data from the process. Teasing out the true properties of...
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Lies, Damn Lies, and Project Statistics

Harvey’s term for torturing the data until it confesses is “p-hacking,” a reference to the p-value, a measure of statistical significance. P-hacking is also known as overfitting, data-mining—or data-snooping, the coinage of Andrew Lo, director of MIT’s Laboratory of Financial Engineering. Says Lo: “The more...
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The Magic of Just Putting a Spotlight on a Problem

The team’s mission is to design policy interventions based on a scientific understanding of human behavior. Recently, for instance, hoping to fight antimicrobial resistance, they tried to persuade some prescription-happy doctors to go easy on the antibiotics. GALLAGHER: We had a very simple intervention, which...
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Murder He Calculated

Threats of federal intervention aside, it will be difficult to fix the problem of high murder rates without first addressing clearance rates. So it’s fortuitous, perhaps, that we are living in an age in which the analysis of data is supposed to help us decipher,...
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Use Your Dark Data

In the same way that dark matter is an unseen but very large part of the cosmos (some estimates peg dark matter at 27 percent of the mass of the universe), dark data represents the unseen but very large part of the data that most...
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You Are Only As Good As Your Project Data

As you’ve probably heard, while Hillary Clinton won the majority of the popular vote, Donald Trump was awarded more than 270 votes in the Electoral College. Many, particularly on social media, were incredulous, partly at the candidates but also at the pollsters — in particular,...
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The Trend Is Your Friend

Check out the stunning numbers recently cited in a New York Times article: 1 percent of Baby Boomers claimed to be vegetarian, which then progressed to 4 percent of Gen X’ers saying no to meat, and onward to an even bigger bump with roughly 12...
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Your Big Data Is At Your Fingertips

So Bull Moose was able to anticipate demand for then-unknown bands such as Pearl Jam and Limp Bizkit before competitors. “We ordered stuff far better than others,” Wickard says, “but we also returned far less merchandise.” Over the past two decades, Wickard and a handful...
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How To Make Pseudo-controversial Changes

On the subject of making pseudo-controversial changes to classic Marvel characters, [Marvel’s Senior Vice President David] Gabriel added that internet outrage is never a good indicator of what actual comic book readers and fans want. “The first thing we do is watch the sales. If...
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