New McLaren 570S Spider Lowering Its Roof This Year

-

Following the introduction of the 570S, 540C, and 570GT, McLaren's Sports Series family is now getting ready to welcome its fourth member - the 570S Spider.
Read more »

Comments

Post a Comment

Popular posts from this blog

iCloud Lock DNS Bypass Server DNS 78.109.17.60

-
Image
DNS 78.109.17.60 Watch video, take pictures, record videos, listen music and radio on your iCloud Locked device while you are waiting full bypass You can try  Applications => Crash  method to unlock your device, but only few people unlocked. Server created by one developer from Ukraine. DNS server and HTTP server fully coded on C++ And thats why my server is failover. More than 12K devices online. More than 100K menu pages requesting per day. And it uses only 2% CPU load. Download tools 
Read more

Kohonen map with R

-
This tutorial complements the course material concerning the Kohonen map or Self-organizing map ( June 2017 ). In a first time, we try to highlight two important aspects of the approach: its ability to summarize the available information in a two-dimensional space; Its combination with a cluster analysis method for associating the topological representation (and the reading that one can do) to the interpretation of the groups obtained from the clustering algorithm. We use the R software and the “Kohonen” package (Wehrens et Buydens, 2007). In a second time, we carry out a comparative study of the quality of the partitioning with the one obtained with the K-means algorithm. We use an external evaluation i.e. we compare the clustering results with pre-established classes. This procedure is often used in research to evaluate the performance of clustering methods. It takes on its meaning when it is applied to artificial data where the true class membership is known. We use the K-Means and ...
Read more

New features for PCA in Tanagra

-
Principal Component Analysis (PCA)  is a very popular dimension reduction technique. The aim is to produce a few number of factors which summarizes as better as possible the amount of information in the data. The factors are linear combinations of the original variables. From a certain point a view, PCA can be seen as a compression technique. The determination of the appropriate number of factors is a difficult problem in PCA. Various approaches are possible, it does not really exist a state-of-art method. The only way to proceed is to try different approaches in order to obtain a clear indication about the good solution. We had shown how to program them under R in a recent paper . These techniques are now incorporated into Tanagra 1.4.45 . We have also added the KMO index (Measure of Sampling Adequacy – MSA) and the Bartlett's test of sphericity  in the Principal Component Analysis tool. In this tutorial, we present these new features incorporated into Tanagra on a realistic ...
Read more