## spark machine learning: r/python implementation of decision tree and computing node

spark machine learning decision tree
--------Only for personal learning knowledge arrangement and R language / python code arrangement
1. Preface
The project uses the decision tree in spark environment, and uses the functions in ml of r and python to learn python sklearn package when returning.
ml is not convenient for draw ...

Posted on *Tue, 12 Nov 2019 15:04:59 -0500* by **InternetX**

## Realization of R Language in Big Data Tribe: EM Maximum Expectation Estimation of Mixed Normal Distribution

Links to the original text: http://tecdat.cn/?p=4815
Recently, EM maximum expectation estimation method has been used in data analysis, and it is also used in parameter estimation. However, it is found that there are not many examples of EM implementation in R software in China. Most of them are about the implementation of two Gauss mixture ...

Posted on *Tue, 06 Aug 2019 01:46:40 -0400* by **SQL Advanced**

## R Language Database

Data is stored in a normalized format in a relational database system. Therefore, we will need very advanced and complex Sql queries for statistical computation. But R language can easily connect to many relational databases, such as MySql, Oracle, Sql servers, and get records from them as data boxes. Once data is avail ...

Posted on *Tue, 14 May 2019 07:12:45 -0400* by **brailleschool**

## D02-R Basic Language Learning

R Language Basic Learning-D02
Content outline of 20190 423:
Preface
2. Vector operation
(1) Routine operation
(2) Calculating variable length vectors
(3) Sequence
(4) Vector deletion and preservation
3. Detailed list
(1) Index of lists
(2) Listing element attributes
(3) Change list elements
(4) Delete list elements
(5) Merge tw ...

Posted on *Mon, 22 Apr 2019 13:27:34 -0400* by **p.persia69**

## Iris R Language Command Toolkit (1)

Iris R Language Command Toolkit (1)
Recent data analysis, using R language to do some data processing and visualization, in this note encountered problems, applied commands, processing methods and toolkits to
Copyright Statement: This article is the original article of the blogger. Please indicate the address of this article when reproducing it ...

Posted on *Thu, 21 Mar 2019 14:21:52 -0400* by **jamal dakak**

## R Language: Common Statistical Testing

Statistical testing is the work of making judgments by comparing the results of sampling with the distribution of sampling. There are five main steps:
Establishing hypotheses
Sampling Distribution
Selective saliency level and negative domain
Calculating test statistics
Judgment—— Baidu Encyclopedia
Hypothesis test, also known a ...

Posted on *Thu, 21 Mar 2019 02:00:27 -0400* by **prem**