random

问题 So from answers to the question, Randomly Generating Combinations From Variable Weights, I've managed to sample without replacement given unequal probabilities. I've implemented this in my particular context and it works great. Now I have access to additional information about my distribution. Specifically, I've been using a neural network to generate these probabilities so far, and I've now trained my neural network to output a probability for each pair of unique objects, in addition to

问题 So from answers to the question, Randomly Generating Combinations From Variable Weights, I've managed to sample without replacement given unequal probabilities. I've implemented this in my particular context and it works great. Now I have access to additional information about my distribution. Specifically, I've been using a neural network to generate these probabilities so far, and I've now trained my neural network to output a probability for each pair of unique objects, in addition to

问题 This question already has answers here : How to select a random item from an array in shell (3 answers) Closed 2 years ago . I have a list of strings that I want to select one of them at random each time I launch the script. For example SDF_BCH_CB="file1.sdf" SDF_BCH_CW="file2.sdf" SDF_BCH_RCB="file3.sdf" SDF_BCH_RCW="file4.sdf" SDF_TT="file5.sdf" Then I want to be randomly select from the above list to assign the following two variables. SDFFILE_MIN=$SDF_BCH_CW SDFFILE_MAX=$SDF_TT How can I

问题 This question already has answers here : How to select a random item from an array in shell (3 answers) Closed 2 years ago . I have a list of strings that I want to select one of them at random each time I launch the script. For example SDF_BCH_CB="file1.sdf" SDF_BCH_CW="file2.sdf" SDF_BCH_RCB="file3.sdf" SDF_BCH_RCW="file4.sdf" SDF_TT="file5.sdf" Then I want to be randomly select from the above list to assign the following two variables. SDFFILE_MIN=$SDF_BCH_CW SDFFILE_MAX=$SDF_TT How can I

问题 Please, help me understand this. After running the snippet: random_device randomEngine; mt19937 generatorEngine(randomEngine()); uniform_real_distribution<double> unifRandomValue( numeric_limits<double>::min(), numeric_limits<double>::max()); double test[1000]; for (int i{ 0 }; i < 1000; ++i) { test[i] = unifRandomValue(generatorEngine); } Why is every generated value in the range [1.0E306, 1.8E308] ? I was expecting a random value uniformly distributed from near 0 to the max of double type.

问题 How do I generate a random number from a specific set of digits? For example, I want to generate numbers from the range 1-100,000 such that every number has only odd digits (for example: 111 , 1351 , 19711 etc..) Using the random module I tried: import random rand = random.randint([1, 3, 5, 7, 9]) Is there any efficient way of doing it? Thank you. 回答1: Here is a solution using list-comprehension: >>> random.sample([i for i in range(1,100_001) if all([int(x)%2==1 for x in str(i)])], 4) [3115,

问题 I saw similar topics but nothing exact. When I used Firefox and the IDE I was able to use StoreEval | Math.round (Math.random() * 99999999999) to create a random number of a specific length. I have now moved to Chrome to use the IDE and "StoreEval" is no longer an option. I have tried all the new "store" options available but end up with the below warning in the logs and the number is not created: "Warning implicit locators are deprecated, please change the locator to id=Math.round (Math

问题 This question already has answers here : Syntax error on print with Python 3 [duplicate] (3 answers) Closed 4 years ago . I'm doing a simple game on Python that uses a random.random() feature, however I'm getting a Invalid Syntax on random.random() in the end of the script. I am not very talented and probably the solution is very simple, but I just don't get why is it sending me the error, I would very much appreciate your help. #Text based game import time import os import sys import random

问题 I'm making a program that will use a that will use this code: JLabel MyImage = new JLabel(new ImageIcon("image1.png")); But, I want to make a random picture appear, say image2,image3,image4. How do I make this by: Not using a List Not using Collections.shuffle using any method or an array. 回答1: Try this Random rand = new Random(); int randomNum = rand.nextInt((max - min) + 1) + min; JLabel MyImage = new JLabel(new ImageIcon("image"+randomNum+".png")); Where max and min are the the numbers of

问题 This question already has answers here : Generating random results by weight in PHP? (12 answers) Closed 6 years ago . This is my code, for example: <?php $arr = array( array("url" => "http://google.com", "priority" => 2), array("url" => "http://facebook.com", "priority" => 2), array("url" => "http://youtube.com", "priority" => 2), array("url" => "http://stackoverflow.com", "priority" => 1), array("url" => "http://kickass.to", "priority" => 1), array("url" => "http://twitter.com", "priority"