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Matlab: How can I split my data matrix into two random subsets of column vectors while keeping the label information?

与世无争的帅哥 提交于 2020-01-19 05:37:30
问题 I have a data matrix X (60x208) and a matrix of labels Y (1x208). I want to split my data matrix X into two random subsets of column vectors: training (which will be 70% of the data) and testing (which will be 30% of the data), but I need to still be able to identify which label from Y corresponds to each column vector. I couldn't find any function to do this, any ideas? EDIT: Thought I should add, there are only two labels in Y: 1 and 2 (not sure if this makes a difference) 回答1: That's

Matlab: How can I split my data matrix into two random subsets of column vectors while keeping the label information?

荒凉一梦 提交于 2020-01-19 05:37:20
问题 I have a data matrix X (60x208) and a matrix of labels Y (1x208). I want to split my data matrix X into two random subsets of column vectors: training (which will be 70% of the data) and testing (which will be 30% of the data), but I need to still be able to identify which label from Y corresponds to each column vector. I couldn't find any function to do this, any ideas? EDIT: Thought I should add, there are only two labels in Y: 1 and 2 (not sure if this makes a difference) 回答1: That's

R : Assigning students to equal groups with random sampling. Understanding rep() argument length.out to sample()

我的未来我决定 提交于 2020-01-16 09:01:09
问题 I have 33 students I want to sort into groups of 6 (or as close as possible) on 5 different occasions. So I assign a number between 1 and 6 to the students on different occassions. I've managed the following: studentlist <- data.frame(seq(1:33)) studentlist$Occassion1 <- sample(factor(rep(1:6, length.out=nrow(studentlist)), labels=paste0(1:6))) studentlist$Occassion2 <- sample(factor(rep(1:6, length.out=nrow(studentlist)), labels=paste0(1:6))) studentlist$Occassion3 <- sample(factor(rep(1:6,

window is not defined when consuming webpack multi-part-library sample files

感情迁移 提交于 2020-01-16 03:55:11
问题 I'm trying to figure out how this webpack library works. The sample code I use is from here https://github.com/webpack/webpack/tree/master/examples/multi-part-library When I ran "webpack" it produce "dist/MyLibrary.alpha.js" and "dist/MyLibrary.beta.js" in the same folder. Then I create a test.js to consume the library and ran it. Other than running webpack and creating the test.js, nothing from the sample files were changed. Consuming alpha.js works fine, but MyLibrary.alpha did not. /

Random values (0 and 1) with condition on each row and each column [closed]

偶尔善良 提交于 2020-01-15 08:24:25
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . Hi I am trying to create a dataframe of 600 rows and 18 columns in R BUT: -each row has to have only three 1's randomly in the 18 columns (for example column A,E,F with 1 and the rest with 0's) -the sum of each column has to be equal to 100 I am really stuck with this problem :(

Random values (0 and 1) with condition on each row and each column [closed]

二次信任 提交于 2020-01-15 08:24:14
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago . Hi I am trying to create a dataframe of 600 rows and 18 columns in R BUT: -each row has to have only three 1's randomly in the 18 columns (for example column A,E,F with 1 and the rest with 0's) -the sum of each column has to be equal to 100 I am really stuck with this problem :(

How to pick random element from array without repeating in Ruby?

…衆ロ難τιáo~ 提交于 2020-01-15 03:24:13
问题 I am new to coding and am trying to learn Ruby. I am working in a Rake. What should I use to ensure that the random selection never repeats the same response back to back? array = ["1", "2", "3", "4", "5"] task :array do array = ["1", "2", "3", "4", "5"] ap(array.sample) end 回答1: With array.shuffle.each{|x|} you can reorder the array, then traverse the new order, pulling items in a random order without repeating them. 来源: https://stackoverflow.com/questions/51162191/how-to-pick-random-element

Can not find the link to full Android samples in android developer

一世执手 提交于 2020-01-14 03:53:15
问题 I can not find the android samples which must be in GitHub by the information i read in android developer. I finnished with Fragments section for example and now i want to see all the full samples. Please someone give me a link. 回答1: You can also import samples directly using Android Studio. 回答2: You can choose a sample in here and just press download http://developer.android.com/samples/index.html EDIT: And here is a link to the google samples github https://github.com/googlesamples 回答3: You

Moving rows between subarrays

≡放荡痞女 提交于 2020-01-11 14:19:06
问题 I have a number of subarrays, say 2 (for simplicity), each with the same number of rows and columns. Each spot in the subarrays is occupied by a number in [1, 10]. What I would like to do is move rows randomly between subarrays according to some rate of movement m = [0, 1]. m = 0 corresponds to no movement, while m = 1 means that any rows across all subarrays can be moved. I take inspiration from: How to swap a number of the values between 2 rows in R but my problem is a bit different than

Google Maps Android API v2 - Sample Code crashes

夙愿已清 提交于 2020-01-09 03:01:05
问题 I'm trying to get the sample code of Android 'Google Maps Android API v2' working. I get the project built without errors. However, when I try to run the app on my Galaxy Nexus (connected with usb to my laptop), the app crashes immediately. I filled in my own Maps API Key at the AndroidManifest.xml I built against Android 4.1.2 This is the logging: Unable to resolve superclass of Lcom/example/mapdemo/BasicMapActivity; (66) Link of class 'Lcom/example/mapdemo/BasicMapActivity;' failed Could

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