I have learnt that it is the randomness of the pixels. But please help with how this randomness is being calculated mathematically. And also how different images will have different entropy.

I am using this line to generate a sha1 id for node.js: crypto.createHash('sha1').digest('hex'); The problem is that it's returning the same id every time. Is it possible to have it generate a ...

Let's say I'm creating a table foo with a column bar that should be a very large random integer. CREATE TABLE foo ( bar bigint DEFAULT round(((9223372036854775807::bigint)::double precision * ran...

I'm seeing some issues with random number generation inside containers running in a kubernetes cluster (repeated values). It might be the lack of entropy inside the container, or it could be someth...

I've heard about people using light sensors, geiger counters, and other physical sensors to generate random numbers, but I'm skeptical. Is there really a way to generate random numbers from taking ...

I have created a class that generates random words (Alphanumerical) using org.apache.commons.lang.RandomStringUtils. public String randomWord(int wordLength) { return RandomStringUtils.random(wo...

In my project I need to compute the entropy of 0-1 vectors many times. Here's my code: def entropy(labels): """ Computes entropy of 0-1 vector. """ n_labels = len(labels) if n_labels <= 1: ...

I'm using /dev/urandom to generate random data for my programs. I learned that /dev/random can be empty because, unlike /dev/urandom, it doesn't use SHA when there are not enough bytes generated. /...

How to calculate the entropy of a file? (Or let's just say a bunch of bytes) I have an idea, but I'm not sure that it's mathematically correct. My idea is the following: Create an array of 256 i...

Can someone give me a clear and simple definition of Maximum entropy classification? It would be very helpful if someone can provide a clear analogy, as I am struggling to understand.

Each continuous distribution in scipy.stats comes with an attribute that calculates its differential entropy: .entropy. Unlike the normal distribution (norm) and others that have a closed-form solu...

I have different file types which includes JPEG and jpg ,#mp3 ,#GIF,#MP4,#FLV, M4V ,exe, zip etc. Take data in blocks , something like 4k block size, find randomness Generate randomness score bet...

I have a dataframe df that contains the information of transactions from a individual Name_Give to another Name_Receive like the following: df Name_Give Name_Receive Amount 0 John Tom 300 1 Eva T...

I am trying to calculate Entropy of each class of the dataset for an image classification task to measure uncertainty on pytorch,using the MC Dropout method and the solution proposed in this link M...

From what I understand, a CSRNG like RNGCryptoServiceProvider still passes the truly random user data like mouse movement, etc through a PRNG to sort of sanitize the output and make it equal distri...

Setup : Ubuntu Server on Virtual Machine with 6 cores and 3GB of RAM. when I am trying to generate a asymmetric key pair via GPG like this gpg --gen-key . I get the following error : Not enough r...

If you want a cryptographically strong random numbers in Java, you use SecureRandom. Unfortunately, SecureRandom can be very slow. If it uses /dev/random on Linux, it can block waiting for sufficie...

I'm reading an image segmentation paper in which the problem is approached using the paradigm "signal separation", the idea that a signal (in this case, an image) is composed of several signals (ob...

I have two tensors, prob_a and prob_b with shape [None, 1000], and I want to compute the KL divergence from prob_a to prob_b. Is there a built-in function for this in TensorFlow? I tried using tf.c...

suppose I have a data set: X y 20 0 22 0 24 1 27 0 30 1 40 1 20 0 ... I try to discretize X into few bins by minimizing the entropy. so I did the following: clf = tree.DecisionTreeClas...

I've tried for several hours to calculate the Entropy and I know I'm missing something. Hopefully someone here can give me an idea! EDIT: I think my formula is wrong! CODE: info <- function(...

I use the following code to return Shannon's Entropy on an array that represents a probability distribution. A = np.random.randint(10, size=10) pA = A / A.sum() Shannon2 = -np.sum(pA*np.log2(pA))...

I have an example of a histogram with: mu1 = 10, sigma1 = 10 s1 = np.random.normal(mu1, sigma1, 100000) and calculated hist1 = np.histogram(s1, bins=50, range=(-10,10), density=True) for...

A poker deck has 52 cards and thus 52! or roughly 2^226 possible permutations. Now I want to shuffle such a deck of cards perfectly, with truly random results and a uniform distribution, so that y...

maybe someone is able to help me here. I am trying to compute the cross entropy loss of a given output of my network print output Variable containing: 1.00000e-02 * -2.2739 2.9964 -7.8353 7.4667 4...