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  1. My goal is to build an automatic classifier for a router's Syslog messages; the machine should be able to tell me what it sees that is new and interesting.

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  2. It is not very fast and not very clever, but I am already surprised at how well the approach works with longer strings.

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  3. I suppose this is my first step towards machine learning. This program automatically classifies strings into clusters by their relative editing distance.

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  4. proslijedio/la je Tweet
    2. velj

    The ideal performance property we should ask of a high-level programming language and library is that it minimizes runtime and compile-time combinatorial complexity. We can accept constant overheads, but not higher-order overheads. This has many implications.

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    2. velj

    Here’s an exercise in separating fundamentals from conventions: if we held a technical summit with all of the galaxy’s advanced alien civilizations, what would we find we had in common, and what would we find inscrutable?

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  6. 2. velj
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  7. 2. velj
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  8. 1. velj
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  9. proslijedio/la je Tweet
    31. sij

    Just eliminated C++ exceptions in a complicated multithreaded library. It’s 15% faster despite all performance sensitive functions previously being declared noexcept, with no obvious explanation.

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    29. sij

    My wife and I never talk baby talk to our kid. We enforce academic seminar norms and jargon. My child isn’t even 2 yet and can interrupt presenters on the first slide. Adults at family gatherings are shocked when my child asks a question that turns out to be more of a comment.

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  11. proslijedio/la je Tweet
    25. sij

    The Travelling salesman problem is one of the most well know NP-hard problem. Concorde’s solver can be used to solve exactly or approximately even large instances.

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  12. 23. sij

    Generic bisection solver for several primitive functions.

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  13. proslijedio/la je Tweet
    22. sij
    Odgovor korisniku/ci

    you would think! but in fact most of your ancestors are female relatively few men, historically, reproduced; but when they reproduced they reproduced a LOT these men will show up many times in your family tree eg:

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  14. 22. sij

    Minor improvement: if goal - pm <= mid * mid <= goal + pm || lo == mid || mid == hi Allows recursion to escape situations where the estimate cannot get any better due to loss of precision.

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  15. 22. sij

    You inspired me to try something, and it worked! You can easily approximate square roots with bisection.

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  16. proslijedio/la je Tweet
    20. sij
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  17. 19. sij

    I just found the original Harris-Benedict equations from 1918. Researchers ran N=136/N=103 studies to estimate basal metabolism. The highlighted constants are still used. How do you even do such huge linear regressions *by hand* to 4 decimal places?!

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  18. 19. sij

    This program uses a depth first search to topologically sort the input steps, so steps can be provided in any order.

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  19. 19. sij

    Ever spend a day automating something you could have finished in 30 minutes? I liked the format of the checklists found in Alcatel manuals. I decided to recreate this format in plain text and LaTeX.

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  20. proslijedio/la je Tweet
    15. sij

    It's been 6 months since I joined the gym and no progress. I'm going there in person tomorrow to see what's really going on.

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