peripetylabs

14 ms·

91.
by peripetylabs 14y ago
The site appears to be down. More information here: http://www.radtastical.com/stories/nu
92.
by peripetylabs 14y ago
The "time warp" aspect is very interesting. There is another algorithm for computing similarity between time series, which could still be very useful: cross-correlation (also called "coherence" in signals processing). Cross-correlation is
93.
by peripetylabs 14y ago
From the video, it looks to me like they used MATLAB. There are a few open-source databases of physiological signals like the ECG used in the video. One is PhysioBank: http://www.physionet.org/physiobank/
94.
by peripetylabs 14y ago
This person, Scott Young, did not "master" linear algebra. If anything, he mastered the curriculum . There's a difference, and in a year he won't remember a word of it. He is, however, a master of self-marketing: "To find out more about t
95.
by peripetylabs 14y ago
Just a couple technical notes: 1. The article states " the operation which is opposite to convolution is equivalent to division in the frequency domain " which is not correct. 2. "Deconvolution" has no mathematical definition (as implied by
96.
by peripetylabs 14y ago
I don't recall ever wondering "why" I would ever "need" mathematics. I just always enjoyed it. To me, trying to convince students why they should enjoy mathematics (just because we do) seems like a good way to make students miserable. Is ma
97.
by peripetylabs 14y ago
Yeah that's what I mean. List comprehensions are faster than StringIO for string manipulation, for example. I always like to read about real-world applications of this stuff, the presentation was very interesting nonetheless.
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by peripetylabs 14y ago
So it seems speed in Python is inversely proportional to readability, in his experience. One performance aspect of Python often overlooked is its functional programming features, which can make your code both faster and easier to read.
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by peripetylabs 14y ago
Great article. The analysis is correct and to the point. This reminds me of an article about entrepreneurship in a small town in Germany, where they are known for high technology materials engineering. One interviewed businessman was shocke
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by peripetylabs 14y ago
I think the author correctly understood probability theory. If a population is modelled by a random variable, each individual probability is unknown. What is known is the continuous probability distribution of the entire population. Intui
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by peripetylabs 14y ago
So it seems we agree. I was asking: why use Github at all? Most of the value added of Github can be done with CSS and simple network analysis.
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by peripetylabs 14y ago
I think you hit the nail on the head. This is very interesting in light of Turkey intercepting "radar" equipment from Russia to Syria. If the jamming is coming from Syria, I'd say it's the government trying to jam the encrypted satellite ra
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by peripetylabs 14y ago
Perhaps I'm misunderstanding: I thought one goal of DVCS was to remove central points of failure? In that sense, isn't a central "hub" regressive? I wonder if there's a way to host Git repositories with static files, say, on Amazon S3... Th
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by peripetylabs 14y ago
As an aside, the "power_it" function in Python can also be written as: map(lambda t: t ** 2, [1,2,3,4]) or even: [(lambda t: t**2)(x) for x in [1,2,3,4]]
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by peripetylabs 14y ago
I recommend switching from Wordpress to a static website, using something like Jekyll or Octopress. Then, hosting with S3 and CloudFront is very cheap.