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    CompSci Weekend SuperThread (November 27, 2020) Computer Science

    November 27, 2020

    CompSci Weekend SuperThread (November 27, 2020) Computer Science

    CompSci Weekend SuperThread (November 27, 2020)

    Posted: 26 Nov 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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    Tackling Imposter Syndrome in Software Engineering

    Posted: 26 Nov 2020 10:48 PM PST

    What difference are between the topics and perspectives of these two “distributed” books

    Posted: 26 Nov 2020 06:53 PM PST

    I found two books which seem both about distributed computing based on their titles:

    But their table of contents don't seem to match. The second book talks about things like actor model and pi calculus, which are not mentioned in the first book. The first book talks about things like concensus problem, which are not mentioned in the second book.

    What is the difference between the topics and perspectives of the two books?

    Thanks.

    submitted by /u/timlee126
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    How to convert PDA between Final State acceptance and Empty Stack acceptance?

    Posted: 26 Nov 2020 03:53 PM PST

    I'm unable to find good videos on this, and my textbook is the Hopcroft one, which although good on some topics, is absolutely horrible here, due to it less providing examples and ways to learn, and more proofs.

    submitted by /u/Maxerature
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    Where can I find the size of addressable and virtual memory of a CPU or SoC

    Posted: 26 Nov 2020 04:33 AM PST

    [R] Do We Really Need Green Screens for High-Quality Real-Time Human Matting?

    Posted: 26 Nov 2020 06:43 PM PST

    In the new paper Is a Green Screen Really Necessary for Real-Time Human Matting, researchers from the City University of Hong Kong Department of Computer Science and SenseTime propose a lightweight matting objective decomposition network (MODNet) that can smoothly process real-time human matting from a single input image with diverse and dynamic backgrounds.

    Here is a quick read: Do We Really Need Green Screens for High-Quality Real-Time Human Matting?

    The paper Is a Green Screen Really Necessary for Real-Time Human Matting? is on arXiv. The code, pretrained model and validation benchmark will be made accessible on the project GitHub.

    submitted by /u/Yuqing7
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    Is a CDN a distributed file system?

    Posted: 26 Nov 2020 11:35 AM PST

    Is a CDN a distributed file system? Looks similar to me. If not, why?

    What category of distributed systems does CDN belong to?

    Thanks.

    submitted by /u/timlee126
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    Best strategy to keep a list sorted?

    Posted: 26 Nov 2020 10:03 AM PST

    Suppose I have a web conferencing app in which all participants communicate through a central server. In a conference call, it would be make sense (for various reasons like limited screen real estate) for this server to forward only a selected N video streams (because these are dominant speakers) out of K total streams, where N < K. Obviously, we would want the K streams to be sorted after every fixed time interval during which dominant speakers are determined. I am thinking of using a self balancing BST to do this but which one - AVL/RB/B/someother - to use is something I am unsure of. Also, is a self-balancing BST the only choice here? Any inputs?

    submitted by /u/abhijeetbhagat
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    Alrotithm Problem

    Posted: 26 Nov 2020 02:40 PM PST

    Hi! :-)

    Is the following thought solvable?

    1. You have n secrets. n element of N > 100M.
    2. I know a secret from you. I don't want you to know which one I know out of the 100M+ possibilities.

    How can I prove to you that I know just one of your n secrets? I don't want you to know which secret of you I know but you must be able to validate that I know it.

    Kind regards

    submitted by /u/fr0nksen
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