distribution

问题 I would like to acquire values from a uniform distribution that is sloped instead of a standard uniform distribution which is drawing out values from a straight flat line of slope = 0. To be more specific, I'd like to get values from the function of the slope distribution, FIGURE 2 BELOW. I do know that for the first one, I could use numpy.random.uniform(initial,final). How can I do this for a sloped distribution? I know that multiplying a 'slope' or scaling factor to the values from the

问题 Suppose I have the following data: a <- data.frame(var1=letters,var2=runif(26)) Suppose I want to scale every value in var2 such that the sum of the var2 column is equal to 1 (basically turn the var2 column into a probability distribution) I have tried the following: a$var2 <- lapply(a$var2,function(x) (x-min(a$var2))/(max(a$var2)-min(a$var2))) this not only gives an overall sum greater than 1 but also turns the var2 column into a list on which I can't do operations like sum Is there any

问题 Suppose I have a dataset with 1,000,000 observations. Variables are age, race, gender. This dataset represents the whole US. How can I draw a sample of 1,000 people from this dataset, given a certain age distribution? E.g. I want this datset with 1000 people distributed like this: 0.3 * Age 0 - 30 0.3 * Age 31 - 50 0.2 * Age 51 - 69 0.2 * Age 70 - 100 Is there a quick way to do it? I already created a sample of 1000 people with the desired age distribution, but how do I combine that now with

问题 I have this error when I try to archive my app (adHoc or distribution) "NO SUCH MODULE" I followed all the instructions in the official page https://github.com/Alamofire/Alamofire#manually (manually installation) But when I RUN my app it works fine, and when I try to ARCHIVE it to get ipa for distribution or adHoc version, I get the error in the image above. What happen? p.s. I use xCode 7.0.1 with swift 2.0 Thanks 回答1: This is a strange issue being seen with Xcode 7.0.1, Swift 2.0. Even I am

问题 I have this error when I try to archive my app (adHoc or distribution) "NO SUCH MODULE" I followed all the instructions in the official page https://github.com/Alamofire/Alamofire#manually (manually installation) But when I RUN my app it works fine, and when I try to ARCHIVE it to get ipa for distribution or adHoc version, I get the error in the image above. What happen? p.s. I use xCode 7.0.1 with swift 2.0 Thanks 回答1: This is a strange issue being seen with Xcode 7.0.1, Swift 2.0. Even I am

问题 I want to craft an algorithm that will give me numbers that are random in the sense that I have no idea what they'll be, but at the same time, numbers that are closer to 0 have to be more likely to occur as output while those closer to 1 must be less likely. I'd like to play around with both linear and exponential distributions, so please give at least hints for implementing both. I've thought and thought about how to approach this issue, but I still don't even have a clue, so any pointers

问题 I have an application that is built with xcode 6.1. I created a plist to go with it. It downloads just fine on iOS 8.0.2 and before, however, it always fails to install on any iOS 8.1 devices. Here are my steps I am following. Archive the ipa file using the created certificate and provisioning profile Host the plist and ipa file in your server Include a download html file with a href tag with src "itms-services://?action=download-manifest&url=https://mypassagewaytest.gwic.com/gw/premcalc

问题 I've an Active Directory with domain myDomain.local , under it there exists a Distribution Group that contains many groups. How can I read (programmatically) all these subgroups to retrieve a list of their names ? And how to optimize the query to filter the result so that it just retrieves all the groups that ends with the word Region ? BTW, I'm using C#.Net, ASP.Net and sharepoint, and i'm not experienced with AD. 回答1: If you're on .NET 3.5 (or can upgrade to it), you can use this code using

问题 The Problem I need an algorithm that does this: Find all the unique ways to partition a given sum across 'buckets' not caring about order I hope I was clear reasonably coherent in expressing myself. Example For the sum 5 and 3 buckets, what the algorithm should return is: [5, 0, 0] [4, 1, 0] [3, 2, 0] [3, 1, 1] [2, 2, 1] Disclaimer I'm sorry if this question might be a dupe, but I don't know exactly what these sort of problems are called. Still, I searched on Google and SO using all wordings

问题 I am currently having some problems regarding provisioning profiles on the dev centre. In the past, I have been able to successfully create and deploy apps on internal app stores and on multiple devices. I have never run into trouble when trying to sign my apps. However, since the last update on the dev-portal, I have not been able to create new provisioning profiles - which is becoming a big problem. I have successfully created an app id, com.xx.USApp and created a certificate for it: com.xx