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    Monday, August 24, 2020

    Hackathon: Join us for a virtual SBUHacks! Computer Science

    Hackathon: Join us for a virtual SBUHacks! Computer Science


    Hackathon: Join us for a virtual SBUHacks!

    Posted: 24 Aug 2020 03:49 AM PDT

    Hey, everyone!!

    SBUHacks is a rapidly growing hackathon that's going virtual for the 2020 season. We're open to anyone joining, from tech enthusiasts just getting their start in programming all the way to experienced programmers looking to try something new. Registration just went out, and we're a month out from the big day. Check out our website at sbuhacks.org to sign up if you're interested, and we hope to see you there!

    https://preview.redd.it/ux6uhof7kxi51.png?width=960&format=png&auto=webp&s=7d69f79ee5e6fef648412f845480cc3c376a2073

    submitted by /u/SBUHacks
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    Database for 3SAT/Boolean MQ instances

    Posted: 23 Aug 2020 10:04 PM PDT

    Hi was wondering if anybody has a recommended goto collection for 3SAT instances (a good mix of SAT and UNSAT would be nice) or system of Boolean multivariate quadratic instances?

    submitted by /u/monikernemo
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    SAS vs R : Which One is better for statistics Operations

    Posted: 24 Aug 2020 01:00 AM PDT

    Regarding research opportunities in Computer Science.

    Posted: 23 Aug 2020 11:56 PM PDT

    Hello guys,

    I'm undergrad student in India, in a government college. I've never done any research, I'm in third year out of four year program. I came across various posts in this subreddits, which told to ask professors for research opportunity. So I contacted my professor and he wants me to give topics which I have in mind.

    My interests are in Computer Networks, Data Science, Robotics, Operating Systems, Computer Security, also interested in ethical hacking and algorithms.

    I've never done any research, and had several questions.

    Q1. Can I research on already researched topic?

    Q2. Any suggestions from your side.

    Q3. How to get started?

    Q4. Where can I see others research paper.

    Thanks and Regards.

    submitted by /u/cpt_alfaromeo
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    An easy way to understand "autowiring" in Spring

    Posted: 23 Aug 2020 08:04 PM PDT

    Plataforma 5 BootCamp

    Posted: 23 Aug 2020 05:01 PM PDT

    Someone know something about the Platform 5 Bootcamp and would like to share his/her experience?

    submitted by /u/ruso_baiter
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    Some questions about understanding machine learning paper

    Posted: 23 Aug 2020 03:12 PM PDT

    Hello All,

    I've been instructed to read this paper: AdaS: Adaptive Scheduling of stochastic gradients and I had some questions:

    Defn 1:

    - This is my first experience with tensor decomposition, and was confused about what 'low-rank singular values' means?

    - why is the tensor only in 4 dimensions? if its the weights of the conv layer then it should have as many dimensions as there are kernels/filters right?

    - what do they mean by 'knowledge gain across a particular channel'? Is this referring to the depth of an image? It's the particular channel (dth dim) of the tensor representing the weights of the conv so kinda confusing - especially since the tensor should only have 4 dimensions?

    Defn 2:

    - what does " low-rank singular values of a single-channel convolutional weight" mean (same q in 1)

    Semi-related qs:

    - what is a 'superblock'? How does it defer from a block?

    Thank you for your help!

    E: a few more questions

    submitted by /u/always-stressed
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    Is the minimum program size fundamentally dependent upon the encoding?

    Posted: 23 Aug 2020 03:12 PM PDT

    I'm reading Dennett's Real Patterns where he uses Chaitin's definition of randomness:

    "A series of numbers is random if the smallest algorithm capable of specifying it to a computer has about the same number of bits of information as the series itself."

    I'm wondering if this is well-defined as is or if there is ambiguity regarding the entropy of a program depending upon how we choose to encode it. My understanding is that there are infinitely many possible encoding schemes and they will give different sizes for different programs.

    submitted by /u/AlexandreZani
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    Final Year - Finance related project

    Posted: 23 Aug 2020 08:33 AM PDT

    Hi,

    I will be starting my final year next year and after doing an internship this summer in an investment bank, I would love to work on a finance related project.

    After graduating I would love to go on and study a masters in Machine Learning and look at working as a quant within the industry, so I was wondering if there are any projects you could suggest me to approach?

    I've googled but I haven't been able to find much, was hoping you could help me with suggestions or pointing me in the right direction. Thank you!

    submitted by /u/xyz_dlob
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    3SAT solution approach via 2SAT simplification

    Posted: 23 Aug 2020 05:21 PM PDT

    Why functional programming is awesome

    Posted: 23 Aug 2020 08:44 AM PDT

    AA Tree Data Structure (AA == Arne Andersson) ��

    Posted: 23 Aug 2020 07:52 AM PDT

    Describing data streams

    Posted: 23 Aug 2020 07:40 AM PDT

    I've had some thoughts about file extensions and MIME types, and how inadequate they are at telling the OS, applications or humans anything truly useful about type of data in a file or stream, and how to improve the situation.

    A good example might be Application/pdf - which tells you very little. It doesn't say that it's ultimately a page layout, or a human readable document, or that it's binary.

    A file or stream can also be viewed as different types depending on how high or low level you are considering it. For example, an SVG image is also an XML document, which is also a text stream. This could be useful information for a system, which even if it doesn't know what to do with SVG, it may still be able process it as an XML stream.

    There's also extra information that usually has to be determined heuristically each time a file is opened, such as the character encoding of a text file, the endian-ness of the byte order for multi-byte values, and whether the text is left-to-right or vice versa.

    All of this useful information could be assembled to describe a data stream in a meaningful way, which has lead me to propose some examples of how this could look.

    A plain text file, could be described thus:

    text(charset:iso-8859-15;line:CRLF;dir:LTR) 

    A CSV file, which has always been plagued with difficulties as there's no way of marking the many optional configurations, could be described something like this:

    text(charset:iso-8859-1;line:CRLF)/data/csv(delimiter:",";text-enclosure:"\\"";date-format:"YYYY-MM-DD") 

    An SVG image as in interesting case as at least two separate descriptions could apply:

    text(charset:utf-8;line:LF;dir:LTR)/data/markup/tag-based/xml, text(charset:utf-8;line:LF;dir:LTR)/visual/vector/svg 

    You could opt for a more encapsulated notation instead, which would be well demonstrated by a compressed SVG (.SVGZ is a commonly used file extension for these):

    binary/compressed(type:gzip){ visual/vector/svg{ markup/tag-based/xml{ text(charset:utf-8;line:LF) } } } 

    Such descriptions could be examined by programs which could then decide if they're capable of consuming or handling the data even if not at every level.

    Would anyone be interested in exploring this idea further, with a look to perhaps defining a useful language for describing data streams?

    submitted by /u/themightyug
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    What happens when I ping localhost? Which process is acting as the server and replying with packets?

    Posted: 23 Aug 2020 04:41 AM PDT

    When I do ping localhost on my machine, I get back as many as the packets that I transmitted. However, when I change the command to

    ping localhost 80 

    I dont get any packets back in response - I take it that this means there is no server process which is listening at port 80? Then what process is listening (and at which port) when I just enter ping localhost without any port argument?

    submitted by /u/ThiccShadyy
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