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Set seed parallel random forest in caret for reproducible result

由 狂风中的少年 提交于 2020-01-13 19:56:45
问题 I wish to run random forest in parallel using caret package, and I wish to set the seeds for reproducible result as in Fully reproducible parallel models using caret. However, I don't understand line 9 in the following code taken from caret help: why do we sample 22 (plus the last model in line 12, 23) integer numbers (12 values for parameter k are evaluated)? For information, I wish to run 5-fold CV to evaluate 584 values for RF parameter 'mtry'. Any help is much appreciated. Thank you. ##

srand()与rand()生成随机数

由 天大地大妈咪最大 提交于 2020-01-10 19:39:32
srand()与rand()生成随机数 经过测试，当srand的值确定时，其对应的rand值也是确定的。 #include <iostream> using namespace std; int main() { for (int i = 0; i <= 10; i++) { srand(i); cout << "当seed = " << i << "时，其结果为：" << rand() << endl; } cout << endl << endl << "------第二次验证---------" << endl << endl; for (int i = 0; i <= 10; i++) { srand(i); cout << "当seed = " << i << "时，其结果为：" << rand() << endl; } } 来源： https://www.cnblogs.com/onetrainee/p/12177659.html

ApplicationDbContext Seed starts only if I go to Person Controllers index action in ASP .NET MVC 5.1 application

由 泪湿孤枕 提交于 2020-01-07 07:09:08
问题 I run the Web Application HomeController.Index() action is run. Then I go to Person.Index() (it is at the bottom of this post) via browser then and only then Migrations.Configuration.Seed() is invoked. But I want it to happen at the application start. Configuration: namespace WebApplication2.Migrations { using Microsoft.AspNet.Identity; using Microsoft.AspNet.Identity.EntityFramework; using System; using System.Collections.Generic; using System.Data.Entity; using System.Data.Entity.Migrations

Best seed for parallel process

由 偶尔善良 提交于 2020-01-03 16:45:34
问题 I need to run a MonteCarlo simulations in parallel on different machines. The code is in c++, but the program is set up and launched with a python script that set a lot of things, in particular the random seed. The function setseed thake a 4 bytes unsigned integer Using a simple import time setseed(int(time.time())) is not very good because I submit the jobs to a queue on a cluster, they remain pending for some minutes then they starts, but the start time is impredicible, it can be that two

Rails: Make this rake task aware that it is in the test environment

由 偶尔善良 提交于 2019-12-30 02:50:14
问题 I have the following rake task defined in my lib/tasks folder: namespace :db do namespace :test do task :prepare => :environment do Rake::Task["db:seed"].invoke end end end Now, what this does is seed the test DB when I run rake db:test:prepare . I do this because I have some basic records that must exist in order for the app to function, so they're not optional and can't really be mocked. Separately, I have a model that uses S3 for asset storage in development and production, but I don't

Adding a custom seed file

由 坚强是说给别人听的谎言 提交于 2019-12-29 02:29:04
问题 I want to populate a new feature with dummy data, but don't want to use the db/seeds.rb file as it already has seeds other data irrelevant for this feature. To run the default seeds.rb file, you run the command rake db:seed . If I create a file in the db directory called seeds_feature_x.rb , what would the rake command look like to run (only) that file? 回答1: Start by creating a separate directory to hold your custom seeds – this example uses db/seeds . Then, create a custom task by adding a

rand和srand的用法

由 独自空忆成欢 提交于 2019-12-28 01:21:48
文章目录 rand和srand 代码 atoi 用time来作为传入srand的参数 取余符号 % rand和srand 在man手册里面有讲述到，rand，rand_r和srand 都是与这个pseudo-random number generator有关的 伪随机数字发生器，就是产生随机数的lor SYNOPSIS #include <stdlib.h> int rand(void); int rand_r(unsigned int *seedp); void srand(unsigned int seed); 原型是上面那样描述的。 DESCRIPTION The rand() function returns a pseudo-random integer in the range 0 to RAND_MAX inclusive (i.e., the mathematical range [0, RAND_MAX]). The srand() function sets its argument as the seed for a new sequence of pseudo-random integers to be returned by rand(). These sequences are repeatable by calling srand() with the

How to set seed value of kernel initializer (glorot_uniform) in Keras

由 依然范特西╮ 提交于 2019-12-24 00:54:56
问题 I'd like to set seed value of glorot_uniform kernel initializer in Keras. model.add(Dense(50, input_dim=self.state_size, activation='relu', kernel_initializer='glorot_uniform(seed=0)')) When I use above code, error message is below. ValueError: Unknown initializer: glorot_uniform(seed=0) If I remove "(seed=0)" like as below model.add(Dense(50, input_dim=self.state_size, activation='relu', kernel_initializer='glorot_uniform')) It works well without setting a seed value. How can I set a seed

Java Random seed

由 余生颓废 提交于 2019-12-24 00:42:14
问题 I need to test out a Java program 20 times and need to set the random seed so that the tests can be repeated. If I were to set the initial seed as 0 and then increment by 1 at each run (i.e. 1,2,3 etc), would this method still ensure complete randomness, even though the seeds are not far apart? Thank you 回答1: Any seed will provide the same level of randomness as any other seed for a standard PRNG like the one included with Java. So it's fine to use an incrementing seed for tests. You might

Changing Identity Seed in SQL Server (Permanently!)

由 余生长醉 提交于 2019-12-23 07:31:50
问题 Is there any way of changing the identity seed for an identity column permanently? Using DBCC CHECKIDENT just seems to set the last_value. If the table is truncated all values are reset. dbcc checkident ('__Test_SeedIdent', reseed, 1000) select name, seed_value, increment_value, last_value from sys.identity_columns where [object_id] = OBJECT_ID('__Test_SeedIdent'); returns name seed_value increment_value last_value ------------------------------------------------- idIdent 1 1 1000 I was
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