Posted: 27 Apr 2018 02:47 PM PDT

Unsolved in a general sense. Having something exist but be too slow is fine :) Just curious about the interesting things others think about or work on that myself or others maybe haven't been exposed to. These kind of cool problems are why I enjoy compsci so much, so I'd think there would be a lot of other cool ideas with nothing really there yet!

If you could leave a concept and any writing on it / progress you've found or what your thoughts are it'd be great!

I'll try to list a few fun ones (and if these have more progress than I think they do, it might just be because I don't know!):

Rewrite system compression; find a l-system or equivalent which generates the input data.
- http://www.nic.funet.fi/~magi/opinnot/compr/
- http://www.math.psu.edu/tseng/class/Fractals.html
One shot hierarchical learning; from a single view of input learn and reindex a hierarchical graph of connections to be able to remember and extrapolate from past similar inputs.
- https://blog.openai.com/learning-a-hierarchy/
- https://www.frontiersin.org/articles/10.3389/fncir.2016.00023/full
Generalized memoization for computation graphs (kinda weird way of putting it, but unsure how else to explain succinctly, think hashlife extended)
- https://en.wikipedia.org/wiki/Hashlife
- https://www.cs.cmu.edu/~guyb/papers/ABBT06.pdf

submitted by /u/t_bptm
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Not sure how i'm getting this Hamming Question Wrong.

Posted: 28 Apr 2018 03:49 AM PDT

Recently went though hamming in my previous lecture, I thought I understood it and went home to have a practice and look some questions up online but I don't understand how i'm getting the wrong answer. The question is "Create an 8 bit hamming code word for the value 0xD using even parity. Show your answer in hexadecimal." Answer is suppose to be "0x AA"

https://i.imgur.com/7J3nuDf.jpg

Attached are my workings, any help would be greatly appreciated. Cheers

submitted by /u/Proxima-
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Anyone have AP Computer Science 2017 Multiple Choice Questions

Posted: 27 Apr 2018 07:17 PM PDT

LF ap comp sci 2017 mc questions, currently unreleased but some have it

it'd be a big thanks

submitted by /u/Logitecharms
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