psyklic

28 ms·

361.
by psyklic 10y ago
To summarize* and elaborate: Originally in Ruby, multiple assignment inside a conditional caused a parse error. Why? Because multiple assignment originally always returned an array: irb(main): a, b = nil => [nil] In Ruby, non-em
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by psyklic 10y ago
"Book of Proof" is about basic objects in higher mathematics and writing proofs (as a human). There are only about 30 pages covering the basics of mathematical logic. So, I imagine Common Logic would not be very related to this bo
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by psyklic 10y ago
Some of my most unique projects: - One of the original programming department heads of 0 A.D., one of the leading open-source RTS engines. I led the switch to a 3D engine. - 2D library for the VESA Video BIOS Extensions (paged "hi-res&
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by psyklic 10y ago
The difference is that divisibility by 2 can be tested almost instantly. (Only the least significant digits of each factor matter.) However, testing each factor for divisibility is often as tedious as the original multiplication! I think we
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by psyklic 10y ago
It is only obvious if you take the theorem as a given (as mathematicians typically do). However, I bet if you are given a slightly different system, it would be difficult to say whether this is true: For some natural number N, do there exis
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by psyklic 10y ago
Gowers argues that even without considering generalizations of the reals, it is not "obvious". He argues that if the Theorem were "obvious", we should quickly be able to say that 23 x 1759 != 53 x 769, without multiplyin
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by psyklic 10y ago
Here are a few more applied papers/articles: + Hulu: http://tech.hulu.com/blog/2011/09/19/recommendation-system/ + Amazon: http://www.cs.umd.edu/~samir/498/Amazon-Reco
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by psyklic 10y ago
The errors I need Google for are almost universally caused by third-party libraries. Back in the day, your software relied on significantly fewer third-party libraries, and/or you wrote the libraries yourself in-house. Languages had mu
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by psyklic 10y ago
Put keywords in quotes and Google will not exclude them.
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by psyklic 11y ago
Yes, it does wear off. (From personal experience and reading others' experiences in the development kit forums.) That said, it requires several weeks of repeatedly exposing yourself to awful motion sickness that may take hours to disap
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by psyklic 11y ago
Check the hiring sections of the national laboratory websites (e.g. Lawrence Livermore in the Bay Area). They post quite a few Technical Scholar/Undergrad Researcher positions in bioinformatics and computation that not many students kn
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by psyklic 11y ago
From his YouTube comments, he wrote his own engine in Python and open sourced it -- https://github.com/3b1b/manim
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by psyklic 11y ago
The Open Syllabus Project: http://opensyllabusproject.org/ HN Discussion: https://news.ycombinator.com/item?id=10956097
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by psyklic 11y ago
If a problem is too difficult to solve, then we solve simpler related problems first. In doing so, we typically gain insight into the more challenging problem. For example, before Calculus was discovered, areas and volumes were all computed
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by psyklic 11y ago
You could argue that standard libraries should be enormous and try to be everything to everyone. In fact, this is one of Mathematica's selling points -- they have many complex algorithms implemented. However, this also means there is a
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by psyklic 11y ago
Here are two examples. The frontend asks a user for an image (or city+radius), and the backend edge detects the photo (or returns a map with a shaded radius around the city): CloudDeploy[FormFunction[{"photo" -> "Image
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by psyklic 11y ago
As an experienced developer, I surprisingly enjoyed progressing through Wolfram's book for beginners. (I used Mathematica, not their online UI.) In particular: + Making instant web apps and APIs just by specifying two functions -- &quo
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by psyklic 11y ago
In the case of perceptrons, point taken -- I agree. However, my original statement still holds. The loss and error functions presented on the slides are still valid. Whether or not they are easily optimizable, they are still examples of los
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by psyklic 11y ago
In the case of these slides, the loss function is max(0, -xy) and the error function is the sum of these. So, the error function is the number of incorrectly classified examples (if x and y are different, it adds 1 to the error), which is e
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by psyklic 11y ago
- You can think of error, loss, and cost functions as the same. In fact, two textbooks in front of me say that the loss function is a measure of error. If "loss" is a confusing word, think of it as the "information loss"
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by psyklic 11y ago
Thanks! I'm also a big fan of your data journalism Python exercises: https://github.com/compjour/search-script-scrape/
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by psyklic 11y ago
>> Is there REALLY a difference between a "method," a "procedure," and a "function" proper? Yes. These words closely follow the evolution of programming paradigms. Early in computing, code was organized l
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by psyklic 11y ago
Data is typically not very conclusive by itself. So, people often make a number of behind-the-scenes decisions that make the conclusions seem stronger than they actually are (whether on purpose or not). For a great example of this, try the
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by psyklic 11y ago
Not necessarily. For individuals who want to live close to work and rent condos/apartments it could work out well (e.g. young professionals just out of college). For example, West Hollywood is ranked as the most walkable city in Califo
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by psyklic 11y ago
It works. Follow: (1) 1 black then 1 white. (6) 6 blacks then 1 white. (0) 1 white. (3) 3 blacks then 1 white. And you end up at the bottom node, indicating it is divisible by 7.
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by psyklic 11y ago
Brilliant is amazing for practicing math. It's similar to programming problem sites but for math: https://brilliant.org
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by psyklic 11y ago
SEEKING WORK - Los Angeles, CA / Remote I am a Caltech alum and independent consultant. I work with funded startups and larger companies in: (1) Data Science/Machine Learning. (2) Complete MVPs/prototypes from the ground up.
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by psyklic 11y ago
It sounds as though the company has no product, no traction, and no investment. So, to work for stock alone you should insist on being an equal co-founder -- especially if you are crucial to building the software and taking on identical ris
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by psyklic 11y ago
There have been a few projects on KickStarter that do this. For example: + https://www.kickstarter.com/projects/sparkdevices/spark-elec... + https://www.kickstarter.com/projects/konekt/ko
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by psyklic 12y ago
Many of the responses seem to misconstrue "value-based pricing" with "fixed-bid pricing". If the project's fixed bid is approximately your actual estimate (hours estimated x price/hr), then definitely do not pr

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