Computer Science

Hi Everyone I have read that RAID 1 arrays work in such a way that when a file is copied to a RAID 1 array, it is copied to all of the hard drives in the array simultaneously. In other words, it is not copied to just one of the hard drives and then copied from this hard drive to the others. I have also read that if a bad sector occurs on one hard drive in the array, the resulting data corruption can spread to the other drives. What I don't understand is how both of the above statements can be true at the same time because how can the corruption spread if data is not being copied between the hard drives in the array? Thank you very much. Kind regar…

If an algorithm runs say SAT runs in polynomial time on a deterministic multi-track Turing machine through the use of parallelization with 2^n tapes is the algorithm in P?

Hello, I'm struggling with constructing a momoized recursive function in C# What I want is to find the sum of squares for n numbers. What I want to memoize is an already found result of a number squared. So in n numbers, if I have 3 instances of 2, I want to store (2*2)=4 and not call the function recursively again to calculate (2*2), just return 4 and added it the sum. My function is below. In playing around wiht the function, what keeps happening is that mem.Add(arr[index], calc); gives me an exception saying key already exists in mem collection or it does not cycle through all values in the array. Is this possible, and if so how? int …

Do we have any research about it? right now AI could not do analogy and induction. I think it is related with Irrationality.

so I heard a good way to learn this is through learning how to hack. where would you recommend I start any books or sites or languages.

Hello everyone! hopefully this is the right section of forum for my question. I have used VSL in one of my projects and I definitely have a license on the USB key but now it says that e-Licenser key isn't connected (it is). What could be the reason? Best regards Mikiko

which website we can make c programme?

Hi everybody, i have a question about machine learning. I'm not sure about how joint entropy and mutual information work. Since: https://imgur.com/mZU383m For the first equation, we have that: https://imgur.com/C1zIHFT H(x,y) seems to be: 'everything that are not in common between x and y'. But for the second: https://imgur.com/a/3iWIyps In this case H(x,y) can not be 'everything that are not in common between x and y', otherwise the result would not be the mutual information I(x,y). So, how should I read H(x,y)?

I am looking for windows assessment and deployment toolkit video tutorials. I have been able to find some videos on installing it but none that show how to use it.

do neural networks make sensory more and more abstract and then gives a defined output from that abstraction?

I am writing an android application and the debbuger is throwing and error. E/BitmapFactory: drm.service.enabled true Does anybody know how to get rid of the message properly? I was looking online but I couldn't find many references about that specific error I did see there is a drm library https://developer.android.com/reference/android/drm/package-summary so maybe enabling that would work. All the bitmaps used in my app were drawn by me.

Problem The main problem with the Internet is the lack of accurate information storage (AIS). And the creation of AIS is impossible without ranking users. Today in the Internet the main rate is made on the amount of information, and because of the high competition, the amount of information on the Internet is increasing exponentially. As a result, the increase in the amount of information leads to an increasing decrease in the quality of information. The accuracy and reliability of information is getting worse every year. And according to the author, the crisis of information is not yet, but has already come. Wikiped…

Will VR reduce or eliminate the need to commute to work or school? What will happen if VR was to eliminate the need to commute to work. Less cars? Less office buildings? Less government funding for schools?

Hey, guys! So, I've been thinking about making my own programming language that can be both interpreted and compiled and can run on web. For now, I've just made a web-app that converts arithmetic expressions to i486-compatible assembly and interprets them. http://flatassembler.000webhostapp.com/compiler.html So, what do you think is the next step? I only have a vague idea of what the syntax should look like right now, I am planning to make it possible to use both S-expressions and infix notation for arithmetic expressions and only LISP-like syntax everywhere else.

Will it happen within our lifetime ( in 30-70 years)?By using Elon Musk's Neuralink (Neural Lace 2039???) ,NerveGear, exo-skeletons, OpenWorld VR maybe?And if we were to achieve this would anyone still want to live in the real world apart from people who are maintaining the system and certain religious groups?(or at least take breaks from full dive VR)And will we be able to replicate most senses by 2060?

My previous thread was closed because i dared to stray from one subject and mention the other. So this thread is specifically created for the purpose of discussing the comparison and contrast between climate models and the models you might use to calculate lotto numbers. Numbers of variables. The lottery model contains 36 identical pingpong balls. A climate model requires hundreds of parameters. https://wattsupwiththat.com/2011/06/30/earths-climate-system-is-ridiculously-complex-with-draft-link-tutorial/ https://wattsupwiththat.com/2012/01/21/the-ridiculousness-continues-climate-complexity-compiled/#comment-872002 Starting positions The initial posi…

A hash table with chaining is required to hold 10000 records. Each record is indexed by the 2-character initials of the user's name, transformed into integers using the mapping: A=01, B=02,...,Z=26. Ideally, on average, no more than 8 comparisons should be made every time a search is requested. For example, John Doe: John Doe = JD J = 10 D = 04 JD = 1004 The hash function (multiplication hash): h(k) = m(kA - kA) k = 2-character initials as an integer (e.g, 1004) A = 0.6180339887 m = 1000 In this case, how do you compute the average length of the linked lists, in the hash table, that is pointed…

Hello everyone. We have began the first step of exploring around, in order to find a topic for our thesis. Although I have to say I am pretty indecisive, my preferred field would be Information Retrieval, Network Science, Knowledge Extraction. I'm struggling with picking where to apply these exactly and I was wondering if anyone has any advice? I have a deadline soon to prepare the literature review and it's being stressful already. Thank you in advance

It occurs to me that the principles behind the selection of the lottery numbers are quite simple. We have a near spherical box containing about thirty ping pong balls which are rolled around and then one at a time is selected. The physics is very simple. 1. If two balls of equal mass collide then they move off at ninety degrees to each other. 2. When a ball strikes a solid surface the angle of reflection is the same as the angle of incidence. 3. Gravity operates. Surely with those three very simple, irrefutable laws of physics it should be easy to predict next week lottery numbers.

I would like to implement man-in-the-middle to modify sent mongodb tcp requests and add a http header so I can use a dns-redirect on my server. Does anybody know of software that will allow me to do so?

I was curious what would be the best place for a civilisation with easy space travel too put a supercomputer. I was thinking about time dilation and decided if massive resources were put into a computer you would want too abuse time dilation so the computer spends more time programming.

First of all, it is no surprise that computer scientists would consider DNA as an excellent information store. Treated correctly, DNA can be frozen and kept for potentially hundreds of years if I believe the magazine article which I scanned very quickly today. Also, there are 2 billion base pairs in the entire chromosomal content of one cell nucleus which are responsible for the encoding of roughly 21,000 genes to make a human being IIRC. However, here is the bit where I need help. The article claimed that 9 base oligonucleotides could be used to code for short instructions and that 13 of these 9 base oligonucleotides could encode 13 trillion "words" of code (in the…

Hey there, Lets brainstorm about AR. I keep a vision that efficient and detailed work on AR will be a new future industry in itself. I definitely feel that AR is the "next big thing" that is being undernoticed or you can say being implemented in a non-innovative manner. Companies like Apple, Google, Samsung etc, are trying hard to integrate AR tech in their existing devices/technologies. But they are doing it in a way that just undermines the scope and potential this amazing technology keeps. In contrast, start ups like Leap motion, Holo lamp,Magicleap are working on AR intensively from years. The goal is to Replace all devices with AR and…

Anything that requires user input. Is transistors at the heart of it, acting as on and off switches which equate to values (most commonly 1's and 0's)? https://www.youtube.com/watch?v=Xpk67YzOn5w

Hi all, It seems that every month there is a new security startup that advocates some new Machine Learning algorithm to detect "malicious" requests. 99% of them are full of shit. However, that last 1% can be a real threat to your regular "mass-mimikatz", "pass-the-hash", "pass-the-ticket", and so on. Not to mention that Windows 10 introduces some real and effective counter-measures to classic hacking techniques. I decided to write a book on the subject: Ad deleted