20 September 2017

Watch the Gap

I've lost count of the number of times that some comment on some board about this or that spiffy mobile device says that said device would be so much more better if it had a more better battery. Or, a comment that opines some new battery tech is just around the corner. My standard comment is some variation of "a better battery will appear when some genius invents an element better than Li". Consider that for a minute.

Comes the third iteration of Apple watch,
But the issues with Apple's new watch don't stop at bad reviews, inconsistent wireless, or even a short battery life. (It can only manage an hour of talk time when using LTE.)

Tim Cook, meet the asymptote of progress.

Lunch

Serendipity (and some quasi-folk singers from the 1960s) happens when you least expect it. For some time I'd been intrigued by a title on Amazon,"Bayesian and Frequentist Regression Methods" by one Jon Wakefield. Never heard of him, but the table of contents promised a new approach: conpare and contrast real statistics and Bayesian foolishness (OK, that's harsh). So I've been wending my way through it in a desultory manner for a week or so. On the whole, IMHO, Wakefield demonstrates that Bayes offers little usefulness. Good on him.

He discusses a term I'd not run into, sandwich estimator (appears to be from 1960s and 1980s, though), as a palliative to heteroscedasticity. Now, for those who've not been through a baby stat or econometrics course as an undergraduate, one of the teehee moments was when the instructor starts discussing homoscedasticity and it's evil twin heteroscedasticity. Simply put, homo- means that variance is steady with increasing value, while hetero- means that variance increases with value. The problem with hetero- is that its presence mangles the maths' assumptions underlying the normal regression equations. The resulting regression results are "unreliable". Make mine with lettuce and tomato.

So, today Norman Matloff posts some slides from a talk and a new book on regression. The slides are linked to in his r-bloggers post. You should go through the slides, tons of fun. And more sandwich estimator. I will destroy you, heteroscedasticity!!!!

There are a slew of sentences that I'd turn into preamble quotes; they'd last nearly a year. My hero.
Contrary to popular opinion, statistics is not a branch of computer science.

And, my favorite
Myth #3: R 2 is only for linear models.
• R 2 (on either sample or population level) is the squared correlation between Y and Ŷ .
• Thus is defined for any regression procedure, even nonparametric ones like k-Nearest Neighbor.
• Example: Currency data.

Minority Report, part the third

Time has come for another installment in the Minority Report series (here and here for the basis). To recap, the whole point of a dictator is to extract value from the many and transfer to the few. One might argue that the 1% have been doing so for some decades, but Donald J. Quisling makes the gambit explicit. The mealy-mouthed Lefties keep bleating that Donald J. Quisling makes no effort to build a larger base. They ignore the facts staring, and hooting, them in the face.

So, now we have the Graham-Cassidy Trumpcare bill. Clearly even more Darwinist than the earlier attempts to take from the poor and give to the rich. The NYT has a write up today. In particular, a very nice graph showing the transfer. Likely done in R, of course. Note that the losers were those states that accepted Medicaid expansion, while the winners didn't. So, who's going to get the windfall moolah? The lower classes? Not likely. The key to block granting, of course, is the Alabama's of the world can use the money any way they wish. Mink coats for the governor and all his friends. Just like Joe Namath, Alabama player.

Guess Who's Buying ?

This from today's briefing.com @7:56
U.S. Treasuries have made it through another range-bound night ahead of the release of the FOMC Statement for September. The market is all but certain that today's update will not feature a call for another rate hike, but it is widely expected that additional guidance will be provided regarding the Fed's plan to begin reducing the size of its balance sheet. After recovering off this year's low, the benchmark 10-yr yield hovers near levels that have been revisited on multiple occasions since the middle of April.

Yield Check:
2-yr: UNCH at 1.39%
5-yr: -1 bp to 1.82%
10-yr: -1 bp to 2.23%
30-yr: -1 bp to 2.80%

Where, oh where, is the moolah coming from to drive up those prices? The 1% and corps? Ya think. Guess what happens if Donald J. Quisling and friends gives such 1) a huge tax break and/or 2) a tax holiday to re-patriate overseas moolah? Yet more moolah chasing Treasuries. The Donald J. Quisling solution: push through legislation to change how Treasuries are sold. No longer at auction, with a fixed coupon, but with a fixed interest rate. That way right wingnuts can explicitly transfer wealth from the many to the few without all the hand-waving that goes on these days.

The sell-off from the Fed is a hand-waving method to drive up the interest rate: increase supply of instruments will drive price down and interest rate up to where it should be for the idle money rich. Amerika, such a great country. Just don't get sick.

18 September 2017

Where Have Oli Garchs Gone?

For those with short memories, this is how the Russian Oligarchs got rich.
Zinke declined to say whether portions of the monuments would be opened up to oil and gas drilling, mining, logging and other industries for which Trump has advocated. It was not clear from the memo how much energy development would be allowed on the sites recommended for changes, although the memo cites increased public access as a key goal.

You wanna bet?

16 September 2017

Coin of the Realm

About two years ago, in these endeavors, was this
2) bitcoin, by design, is a pyramid scheme

And, not for the first time, the mainstream pundits didn't follow my lead. Sigh. But wait, there's more! In today's reporting, we find that a cryptocurrency vendor has second thoughts. Very, very second:
the cryptocurrency market "increasingly feels like a bunch of white libertarian bros sitting around hoping to get rich and coming up with half-baked, buzzword-filled business ideas."

Further:
Other high-profile skeptics have sounded the alarm about a potential crash in the crypto market, including Jamie Dimon, the chief executive of JPMorgan Chase, who last week called Bitcoin a "fraud," and compared the current digital money craze to the 17th-century Dutch tulip bubble. And even true cryptocurrency believers have started to worry that I.C.O. mania won't end well.

The goal, as always, is to get "in on the ground floor"
But more dollars are still pouring into cryptocurrency ventures every day, as giddy investors ignore the warning signs and look to multiply their money.

I wonder, how many stock certificates of pets.com do you gentle readers have lining your bird cages?

Alternative Fax

For those who may have missed it, the Equifax security chief was a music major. Now, it is well known that facility with music often accompanies one with math. But, come on!!!
[Susan Mauldin, who had been the top security officer], a college music major, had come under media scrutiny for her qualifications in security.

Well, no shit, Sherlock. I'll leave the sexist and elitest rants to the reader.

Here's a bit more detail.
Equifax "Chief Security Officer" Susan Mauldin has a bachelor's degree and a master of fine arts degree in music composition from the University of Georgia. Her LinkedIn professional profile lists no education related to technology or security.

And, according to further reporting, here LinkedIn pages have been scrubbed. My guess as to how she got such a position: it ain't what ya know, it's who ya know. I expect we'll find out the truth in due course.