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    CompSci Weekend SuperThread (February 14, 2020) Computer Science

    February 14, 2020

    CompSci Weekend SuperThread (February 14, 2020) Computer Science

    CompSci Weekend SuperThread (February 14, 2020)

    Posted: 13 Feb 2020 05:04 PM PST

    /r/compsci strives to be the best online community for computer scientists. We moderate posts to keep things on topic.

    This Weekend SuperThread provides a discussion area for posts that might be off-topic normally. Anything Goes: post your questions, ideas, requests for help, musings, or whatever comes to mind as comments in this thread.

    Pointers

    • If you're looking to answer questions, sort by new comments.
    • If you're looking for answers, sort by top comment.
    • Upvote a question you've answered for visibility.
    • Downvoting is discouraged. Save it for discourteous content only.

    Caveats

    • It's not truly "Anything Goes". Please follow Reddiquette and use common sense.
    • Homework help questions are discouraged.
    submitted by /u/AutoModerator
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    My library has a tribute to Alan Turing

    Posted: 13 Feb 2020 08:41 AM PST

    Is completing a Masters Degree after completing my Bachelors worth it?

    Posted: 14 Feb 2020 04:41 AM PST

    Obviously this is quite down to individuals but I just wanted to hear all of your opinions on the matter. I'm currently in my second year of study at The University of East Anglia in the UK. I'm on course to achieve First class honours and I am debating completing a Masters here after I graduate. I can either do a general Advanced Computing Sciences Masters or alternatively a Masters in Cyber Security. I'm just not too sure if the year out of work is worth it to attain a further degree when that extra year in the industry could be very valuable.

    Obviously there's no objectively right or wrong answer but I'd like to hear your opinions.

    submitted by /u/Pick_Me_15
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    Question about regular & context free languages

    Posted: 14 Feb 2020 04:00 AM PST

    I've been requested to give examples of 2 languages that fulfill these requirements:

    1) L1 & L2 are NOT regular

    2) L1 & L2 are context free

    3) L3 = L1 (union) L2 is regular

    4) L4 = L1 (concat) L2 is regular

    ​

    My example was that L1 is the language in which the number of a's is less or equal the number of b's, and L2 is the language in which the number of a's is great or equal the number of b's.

    ​

    I thought requirement #4 was fulfilled because L4 is actually sigma *, but my lecturer said it is not. Can anyone give an example or explain why L4 is not sigma *?

    ​

    Thanks! :)

    submitted by /u/AngelzTouch
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    PSA: phpList Authentication Bypass exploit in v3.5.0 due to type juggling with '==' auth condition (CVE-2020-8547). Here's a guide to securing phpList

    Posted: 14 Feb 2020 03:58 AM PST

    Is GeeksforGeeks a iffy site or is it just me?

    Posted: 13 Feb 2020 08:13 PM PST

    Currently taking a coding class and the readings are web publications but idk I just don't like the way GeeksforGeeks is set up.

    Personally I like w3schools better but again that's just me.

    Is it just me?

    submitted by /u/vapegod_420
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    How would one build a hypocrisy detection engine

    Posted: 13 Feb 2020 12:13 PM PST

    I've been thinking about building a hypocrisy detection engine for use in the political arena.

    I do NOT think it can parse plain text but I think we could build one where we create a set of tuples with metadata about the specific issue.

    For example:

    Alice -> negative -> School grants for low income students Alice -> positive -> School grants for Christian college students

    Each rating would have metadata so that you could cluster them and a human could detect that there was hypocrisy here.

    In this situation, say you were a proponent of "School grants for low income students" and Alice was a political adversary.

    This way you could find various statements related to "School grants for low income students" and see that she was in favor of "School grants for Christian college students" in the past.

    Thoughts here? Seems like this would work but curious if there is a better way.

    submitted by /u/brainhack3r
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    ELI5: How does coupling relate to abstraction?

    Posted: 13 Feb 2020 11:49 AM PST

    I understand that abstraction is related to interfaces in that the idea is we provide interfaces so we don't have to understand/deal with the underlying implementation

    I know coupling is the amount of dependence two components have on each other. In software, I know we aim for low coupling.

    I've heard of low coupling being associated with abstraction. Can someone give an ELI5 explanation of that relationship?

    If we have proper abstractions, does that lower coupling because we can substitute in different dependencies for a particular interface? If we had an Messenger interface for example, we could substitute in different underlying implementations for that interface

    I think another name for this is the Bridge Pattern from the Gang of Four

    submitted by /u/Truetree9999
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    Preparing for Facebook Data Challenge 2020

    Posted: 13 Feb 2020 09:52 AM PST

    Preparing for Facebook Data Challenge 2020

    Hey guys, I have been recently accepted as a finalist for Facebook's Data Challenge for this year and a question I have is what libraries are a necessity to have for Python? So far, I have Matplotlib, Pandas, NumPy, SciPy, Scikit-Learn, and Keras, but I'm having trouble installing Tensorflow and PyTorch. I think the issue is that I have Python 3.7.4 and I have the 32-bit version, but I believe I need the 64-bit version for these libraries to install. For those who have competed in this challenge in the past, have you ever used TensorFlow and PyTorch?

    submitted by /u/jefftheaggie69
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    Google Brain & CMU Semi-Supervised ‘Noisy Student’ Achieves 88.4% Top-1 Accuracy on ImageNet

    Posted: 13 Feb 2020 09:02 AM PST

    Very impressive by their results:

    The research team says their proposed method's 88.4 percent accuracy on ImageNet is 2.0 percent better than the SOTA model that requires 3.5B weakly labelled Instagram images. And that's not all: "On robustness test sets, it improves ImageNet-A top-1 accuracy from 61.0% to 83.7%, reduces ImageNet-C mean corruption error from 45.7 to 28.3, and reduces ImageNet-P mean flip rate from 27.8 to 12.2."

    A quick read: Google Brain & CMU Semi-Supervised 'Noisy Student' Achieves 88.4% Top-1 Accuracy on ImageNet

    The paper: Self-training with Noisy Student improves ImageNet classification

    submitted by /u/Yuqing7
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    What is it specifically that a device driver is doing?

    Posted: 13 Feb 2020 08:40 AM PST

    I tried looking on the internet and all I get is - "a driver is a software that connects hardware to the OS". Does a driver take the serial/parallel data stream and forward it to the OS and vice versa? does it do some conversions? what happens when we, say, read the data stream from the device in c++ or we are writing to the device? From a programmer's perspective, a device seems to be just like a file and maybe the drivers have something to do with this abstraction?

    submitted by /u/tarunchand28021998
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    Is Network Engineering Dead?

    Posted: 13 Feb 2020 05:54 AM PST

    Looking and majors/electives that I can take during my cs Degree, Network Engineering seems really interesting but not sure if it has a future. Advice?

    submitted by /u/Gho5ty
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    Jim Keller: Moore's Law, Microprocessors, Abstractions, and First Principles | AI Podcast

    Posted: 11 Feb 2020 05:38 PM PST
    Read more
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