- Where Developers Learn, Share, & Build Careers


Is there a Python statistical package that supports the calculation of weighted co-operation (i.e., is the weight of each observation)? Uncomfortable does not support numpy.cov weight

Working under a narrow / narrow framework (i.e., able to use numpy arrays to speed the calculation).

Thanks a lot!

The data models are loaded on the sensor count in the statistics .

But we can still calculate it directly: 

  # - * - Coding: UTF-8 - * - "" Descriptive statistics writer with case weight : Joseph Perktlod "" Do weightedststreet.watstats import Statsmodels.stats.weight DescrStatsW np.random.seed (987467) x = np.random.multivariate_normal ([0, 1.], [[1., 0.5], [0.5 1]], size = 20) weight = np.random.randint (1, 4, size = 20) xlong = np.repeat (x, weight, axis = 0) DS = DescrStatsW (x, weight = weight) Print To use 'cov statsmodels' print ds.cov copy expression itself = ds # china ds_cov = np.dot (self.weights * self.demeaned.T., Self.demeaned) / self.sum_weights print '\ nddof = 0' print ds_cov print np.cov (xlong.T, bias = 1) # directly Disiaisiovi 0 = NP. DOT (self. Vits * Self Dimneted. T. Self Dimaneted) / \ (Self. Yuemits - 1) print '\ nddof = 1' print Disaisiovi 0 Print NP Cov (xlong.T, bias = 0)  < / pre> 
 thi s prints:  
  cov statsmodels [[0.43671986 0.06551506] [0.06551506 0.66281218]] ddof = 0 [[0.43671986 0.06551506] [0.06551506 0.66281218]] [[0.43671986 0.06551506] [0.06551506 0.66281218]] ddof = 1 [[0.44821249 0.06723914] [0.06723914 0.68025461]] [[0.44821249 0.06723914] [0.06723914 0.68025461]]   
  editorial Note   
 The initial answer has indicated a bug in the statistics model, which Uran has been fixed.

Comments

Post a Comment

Popular posts from this blog

java - NullPointerException for a 2d Array -

नक्शा = नया बफर्ड इमेज [चौड़ाई] [ऊंचाई]; के लिए (int i = 0; i & lt; height; i ++) {for (int j = 0; j & lt; चौड़ाई; j ++) {if (charMap [j] [i] == पर्वत। इंडेंटफार्म) {if (j + 1 & lt ; चौड़ाई और amp; amp; j-1 & gt; = 0) {if (charMap [j-1] [i]! = पर्वत। इंडेंटिफ़ायर & amp; amp; & amp; amp; charMap [j + 1] [i]! = पर्वत। इंडेंटफार्म) {नक्शा [जे] [आई] = टाइल ग्रिड [1] [10]; }} और {नक्शा [जे] [आई] = टाइल ग्रिड [8] [10]; }}} यह कोड है जिसे मैं सेल के चारों ओर प्रत्येक टाइल को चेक करके 2 डी सर की जांच करने के लिए उपयोग कर रहा हूं लेकिन मुझे लगता है कि किसी को भी सोच रहा हूँ मदद कर सकता है? मुझे संदेह है कि आपको NullPointerException को charMap [j] से प्राप्त हो रहा है [ I] == पर्वत। इंडेंटिफ़ायर लाइन। सुनिश्चित करें कि आप ज्योफ द्वारा सुझाए गए दोनों मानचित्रों के लिए आंतरिक सरणियों को प्रारंभ करते हैं।
Read more

python - Assemble mpeg file unable to play in mediaplayer -

I am currently working on a school project and I think that is to gather some problems with the MPEG file I The scope of my project is: 1) Split the MPEG file into pieces of many fixed sizes. 2) Collecting some of them and leaving some part. Problem 1: When I run the file in the media player, it will play the video until it reaches that segment which I left Give it Example: Chunk = ["yui_1", "yui_2", "yui_3", "yui_5", "yui_6"] Duration of each segment: 1 second * If you think I have left the "yui_4" section. * If I went to collect all the parts except "yui_4", then the video will play the first 2 seconds before being hanged throughout the period. Problem 2: When I gather the first part off the part, it is unable to run the full MPEG file is. Duration of each piece: 1 second Example: wheel = ["yui_2", "yui_3", "yui_4", "yui_5", "yui_6"...
Read more

c# - NameSpace Manager or XsltContent to parse aspx page -

How can I use the namespace manager or XSLT content to parse the aspx page? I am using HtmlAgilityPack I am trying to parse the aspx page to get the button and label control ID. When I try to select a node with the asp: button element, I get the following error Here is the error message: Namespace Manager or XsltContext is required This query contains a prefix, variable, or user-defined function. HtmlAgilityPack.HtmlDocument htmldoc = new HtmlAgilityPack.HtmlDocument (); String filePath = @ "C: \ webform4.aspx"; Htmldoc.load (filepath); Foreach (html.doc.DocumentNode.SelectNodes ("// div") in HtmlNode div) {Response.Write (div.Id); HtmlNode ASP ("asp: button") in foreach (div.SelectNodes) {Response.Write (asp.Id); }} My aspx page looks like: & lt;% @page language = "c #" autoevolutionwireup = "true" codebahind = "Webform 4 Aspx.cs" Inheritance = "WebApplication 1.WebForm4"%> & Lt ;...
Read more