stiff

12 ms·

61.
by stiff 12y ago
If you use performance on the test set for model selection, this is not true. It follows from simple probabilistic reasoning, the more models you try the higher the chance one will score well on both the training set and the test set by &qu
62.
by stiff 12y ago
Two whole schools of mathematics died in "unfortunate and unfitting circumstances", namely the Lwów school and the Warsaw school: http://en.wikipedia.org/wiki/Massacre_of_Lviv_professors http://en.
63.
by stiff 12y ago
The master tip: have a detailed written policy on git usage, on what goes into which branch, on git commit message format, and make really, really sure everyone understands it before they start anything. No tips will help if the history is
64.
by stiff 12y ago
ArsDigita Discrete Mathematics course (this one gives a really gentle start): http://www.aduni.org/courses/discrete/index.php?view=cw MIT Mathematics for Computer Science (harder but still not that hard): http:&#
65.
by stiff 12y ago
Even if this was true it's ridiculous when taken as evidence for radiation lowering cancer risk: Survivorship bias (or survivor bias) is a statistical artifact in applications outside finance, where studies on the remaining population
66.
by stiff 12y ago
The REST thesis, whatever merit it may otherwise have, is also a prime example of the academic style of writing going horribly wrong, though. You could communicate the important novel points of this text in 5-10 pages of clear prose, instea
67.
by stiff 12y ago
The whole article is based on a false premise - behaviour of unicellular organisms is now understood very well by biologists and it is clear they are nothing more than automatons, basically. A simple explanation of amoebas behaviour can be
68.
by stiff 12y ago
A lot of JavaScript is UI code though, so unit tests might not be possible, and a suite of comprehensive functional tests with something like Selenium gets dog slow very fast, in my experience.
69.
by stiff 12y ago
JavaScript is a bit special in this respect, I think. Because of the weird type coercion rules, and how it treats null, undefined and because of the presence of NaN many common coding mistakes end up producing mysterious errors pointing som
70.
by stiff 12y ago
Thank you, I was wondering about the purpose of the tr function, which calculates the product of all elements in the vector, now it's clear that it goes from the array of lengths in each dimension to the total "flat" number o
71.
by stiff 12y ago
I am at a vacation and bored, so I decided to try to actually understand this. I do not know much APL/K/J, but for a start, here is a version with more traditional line breaking: https://gist.github.com/anonymous&#
72.
by stiff 12y ago
> > That I experience my existence is an undeniable fact. One can only infer facts about the universe, such as physics, indirectly, but the one thing I’m utterly certain of is that I am experiencing existence. > It's really a
73.
by stiff 12y ago
This is a manifest about how Arnol'd views mathematics, and it's meaning becomes more clear if you read some of his books and see how he does actual math. It doesn't mean his is the only view possible, but it is the view of a
74.
by stiff 12y ago
I mean you need a certain amount of base mathematics so that you can learn everything else quickly. But once you have the foundation, it’s fairly quick. Shame the interviewer did not proceed to ask him what he considers this foundation t
75.
by stiff 12y ago
You can do those kinds of quick reports in text files conveniently in emacs org-mode nowadays: http://orgmode.org/org.html#The-spreadsheet
76.
by stiff 12y ago
So what's the bottom line? They are going to take it to the next level? Seriously: this is unreadable BS. Quoting Nietzsche and Rilke at the end seemed almost farcical.
77.
by stiff 12y ago
I do not want to contradict the research by this, but our heads certainly aren't all too well adapted to punching. The brain is to a large extent floating quite freely in the cerebrospinal fluid in the skull, and when the head is punch
78.
by stiff 12y ago
Ernst Mach has certainly had real significant influence on the physicists of his generation and the physics they did: http://en.wikipedia.org/wiki/Ernst_Mach
79.
by stiff 12y ago
I don't think the scientific method was "produced" by philosophy of science. I think it was merely described by it after a certain way of doing things has already "crystallized" among practitioners.
80.
by stiff 12y ago
I once had a box "bot-netted" by some automatic scanner after I set up postgres on it, being in a hurry after another box crashed unexpectedly. It is stunningly idiotic to me that SSH seems to be enabled by default for all users (
81.
by stiff 12y ago
Whether you are interested in coefficients or in the main variable, a complex power series is a complex power series, and you use the theory of complex functions. You don't just take derivatives of generating functions, you use the ful
82.
by stiff 12y ago
I would love to see how far you can develop combinatorics or information theory without using any calculus. Even in combinatorics "continuous math" has been used for centuries already for difficult problems: http://en.w
83.
by stiff 12y ago
Professors or not, this is a quite mediocre discussion. For one, "discrete" and "continuous" mathematics are not disjoint things, and the "discrete" math that you can do without touching "continuous mathem
84.
by stiff 12y ago
Sorry, might be I pasted the wrong link in the end: https://archive.org/details/calulusforthepra000526mbp
85.
by stiff 12y ago
You can download the book legally and without the scribd BS from here: https://archive.org/details/calculusforpract00thom
86.
by stiff 12y ago
The rudiments of modern theory can be understood with little more difficulty, and it is clear from those that any significant restriction of the number of degrees of freedom of a model reduces the chances of overfitting occurring, but also
87.
by stiff 12y ago
Any commentary on why would anyone consider this paper of interest today? The peculiarities of the least squares fit are no secret, the assumptions of the "generalizability of fit theorem" presented are highly unrealistic (compare
88.
by stiff 12y ago
The problem with software is that it is too easy to get it working. If you would do completely stupid shit while designing an analog electronic circuit you would get completely stuck in your "inventions" very soon and would not be
89.
by stiff 12y ago
This is often given as the reason in the textbooks, but it actually is a sloppy argument, for there is no reason to presuppose sums of independent variables (they do not have to be drawn from the same distribution in some variants of the CL
90.
by stiff 12y ago
While he might understand what he is talking about, based on a corpus of experience, people who learn about this "principle" as they learn to program do not typically understand it and tend to draw only the wrong conclusions from

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