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Machine Learning Numpy

- December 23, 2018

1. how to create array using numpy : import numpy as np #ad array a=np.array([10,20,30]) // int,float ,String // array should be homoginous #2 d array 3*3 b=np.array([ [1,2,12], [12,12,12], [12,34,5] ]) #3*3*3 c=np.array([ [[1,2,3],[4,5,6],[7,8,9]], [[4,5,6],[8,6,7],[5,6,7]], [[8,8,8],[9,9,9],[9,98,8]] ]) print(a) print(b) print(c) #Arrange Function : a = np.arange(10,20) //start value and end value print(a) [10........................19] a=np.arnage(10,20,2)

Exception Handaling In Spring

- December 14, 2018

-------------------------------------------------------------------------------------------------------------------------- - When The User Request for the web page then user get webpage as a Response. - Example @Controller public class CommonController { @RequestMapping("/") public String homePage() { return "home"; } ------------------------------------------------------------------------------------------------------------------------------- - Due to some developer mistake or some other reason if while processing the request if the method throws some exception say Null Pointer , Resourcefulness or Any Other what user get in that case is ". HTTP Status 500 - Brief description of the error which occurred on server. and related stack trace information. - Example @Controller public class CommonController { @RequestMapping("/") public String homePage() throws IOException{ S

SpringBoot CRUD Operation

- November 27, 2018

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; @SpringBootApplication public class SpringBootJpaApplication { public static void main(String[] args) { SpringApplication.run(SpringBootJpaApplication.class, args); } } ---------------------------------------------------------------------------------------------------------------------- import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table(name="new1") public class UserRecord { @Id private int id; @Column private String name; @Column private String email; public UserRecord(){} public int getId() { return id; } public void setId(int id) { this.id = id; } public String

@Component Scan Annotation Spring

- September 24, 2018

Auto Binding Object ================================== <?xml version='1.0' encoding='UTF-8' ?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd "> <context:component-scan base-package="com.hello"/> <context:component-scan base-package="com.model"/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="or

Liner Regression Solved Example for ML

- August 27, 2018

Formula : Y=aX+b So first we calculate a and b a=n* summation(xy)-summation(x)*summation(y) / n* summation(x*x)- summation(x*x) b=1/n * (summation(y)- a * summation(x))

Naive Bayes Algorithm For Machine Learning..working

- August 24, 2018

Mysql Hosting Comming Soon

- August 11, 2018

https://www.freemysqlhosting.net

JSP Automatic Redirect After Session Expire/Timeout

- August 07, 2018

Steps : 1.Create index.jsp and write below code ================================================ <html> <head> <META HTTP-EQUIV="refresh" CONTENT="<%= session.getMaxInactiveInterval() %>; URL=error.jsp" /> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>JSP Page</title> </head> <body> </body> </html> ================================================== 2.create error.jsp ================================================== 3. in web.xml write below entry of session in minit <session-config> <session-timeout> 1 </session-timeout> </session-config> ================================================== 4.run index.jsp and wait for 1 minit , after one minit automatically error page display. ================================================

When we want to store one class object as value to another class object then we have to use component mapping For Component mapping we have two annotations. 1. Embedable 2.Embeded A class whose object we want to store like a value of another class object should be annotated with ======> @Embedable To the reference variable of embedable class we need to as ===> @Embeded annotation =============================================== @Embeddable public class Address { int hno; String city; } ================================================ @Entity @Table public class Student { @Id int id; @Column String name; @Embedded Address address; ===============================================

Component Mapping In Hibernate with XML

- July 29, 2018

If we want to store one class object at a value of another class object, then we use component mapping. To use Component mapping the two classes should have 'has-a' relation between them. In hbm file to map a Component to a table of a database then we have <Component> tag. Ex : public class Employee{ int id; String name; Address address; } class Address{ int hno; String street; String city; } hbm file: ====================================== <hibernate-mapping> <class name="hibernate1.Student" table="finalst"> <id name="id"></id> <property name="name"></property> <component name="address"> <property name="hno"/> <property name="street"/> <property name="city"/> </component> </class> </hibernate-m

Dialect In Hibernate

- July 27, 2018

Dialect are used to provide information to hibernate about in which SQL command it translate your HQL and Criteria command because SQL is database dependent language and changes from database to database … so to convert our HQL or criteria into a suitable SQL based on database dialect.

Criteria API- Hibernate Notes

- July 25, 2018

To perform bulk select operation we use this criteria API. Criteria API means we use criteria interface and we call methods of criteria interface for reading entities from the database. Criteria API can be used only for select operation, we can not perform non select operation using criteria. In criteria API , there will be less burden on programmer because query tuning will be taken care by hibernate only. To select entities from database using criteria API hen we need criteria object. We can create criteria object by calling createCriteria method of session interface ex: List list=session.createCriteria(Student.class); Using criteria API we can read entities from database in following ways 1. If we want to read full entities form database by without applying any conditions then we need to directly call list method on criteria object. List list=crit.list(); =============================================== 2. If we wan

- June 19, 2018

APRIORY

K-Mean Clustering

- June 16, 2018

Clustering comes under unsupervised learning algorithm : for clustering algorithm uses are : k- mean clustering clustering is the process of partitioning group of data points into small number of clusters k means is a clustering method that aims to find the position of the cluster that minimize the distance from data points to the cluster k-means clustering is one of the simplest algorithms which uses unsupervised learning method to solve known clustering issues. k-means clustering require following two inputs. k = number of clusters Training set(m) = {x1, x2, x3,……….., xm} Let’s say you have an unlabeled data set like the one shown below and you want to group this data into clusters. take mean value find nearest number and mean and put into cluster repeat one and two until we not get same mean example : {2,3,4,10,11,12,20,25,30} data set creating two cluster m1=4 m2=12 k1={2,3,4,} m1=3 k2={10,11,12,20,25,30} m2=18 ========================

Simple and Easy Way To Install Python On Linux

- June 13, 2018

Here is Steps : First Download python from Python.org cd downloads ls ./configure sudo make sudo make install sudo apt-get install libssl.dev openssl Enjoy :

No Logic Only Magic. Python

- May 31, 2018

Learn Python for data science ; Java - int a=10; int b=20 int temp; temp=a; a=b; b=temp; ===================================================== x=10 y=20 x,y=y,x ======================================================= String name="GOVIND" SOP(name) ================= English Statement : name="Govind" print(name) ====================================

Eigen Value and Eigen Vecctor

- May 31, 2018

Let A is the square matrix of order n*n ,then a number lambda is set to be Eigen value of matrix A if there exists a column matrix X of order n*1 such that AX=lambdaX It menas that , if column matrix A , A*X= lambda*X then lmbda is called eigen value of A. X-eigen vector of A. AX-lambdaX=0 A-(Lambda*I )X=0 Eigen Value - chrecteristics value Eigen Vector- Characteristic Vecor Working rule to find Eigen Value and Eigen Vector : First u need to create characteristic equations of matrix A, it is determinate of | A-lambda *I| = 0 I - is the square matrix . Solutions of characteristics equations is called Eigen values , on the basis of egen values corespoing we can find egen vector .

Simple Linear Regression : Machine Learning Practical - Number Of experiance vs Salary

- May 26, 2018

- It is the Study of two variables. - One variable is called as In Dependent variable.(x) - And Other Variable is called as Dependent Variable(y) Example : Salary dependent on Number Of experience U have. - So in this example we can say that : Salary is dependent variable and Experience is Independent variable. - It is used for predictions. - Here we try to predict the change in dependent variable according to change in independent variable. Regression y=a+bx; Here y is dependent variable and x is called as Independent Variable . In this example sales is dependent on price : sales dependents on prince In this Example Salary is Dependent Variable and Number of Years of Experience is Independent. Created on Fri May 25 18:53:42 2017 @author: Govind """ import numpy as mp #this library help to chart graphs import matplotlib.pyplot as plt import pandas as pd import os os.chdir('

Machine Learning : Linear regression

- May 24, 2018

Linear regression attempts to model the relationship between two variables by fitting a linear equation to observed data. One variable is considered to be an explanatory variable, and the other is considered to be a dependent variable. Dependent Variable – Variable who’s values we want to explain or forecast Independent or explanatory Variable that Explains the other variable. Values are independent. Dependent variable can be denoted as y, so imagine a child always asking y is he dependent on his parents. And then you can imagine the X as your ex boyfriend/girlfriend who is independent because they don’t need or depend on you. A good way to remember it. Anyways Used for 2 Applications To Establish if there is a relation between 2 variables or see if there is statistically signification relationship between the two variables- • To see how increase in sin tax has an effect on how many cigarettes packs are consumed • Sleep hours vs

Machine Learning : Supervised vs Unsupervised Learning

- May 21, 2018

Wiki Supervised Learning Definition Supervised learning is the Data mining task of inferring a function from labeled training data.The training data consist of a set of training examples. In supervised learning, each example is a pair consisting of an input object (typically a vector) and a desired output value (also called the supervisory signal). A supervised learning algorithm analyzes the training data and produces an inferred function, which can be used for mapping new examples. An optimal scenario will allow for the algorithm to correctly determine the class labels for unseen instances. This requires the learning algorithm to generalize from the training data to unseen situations in a “reasonable” way. Wiki Unsupervised Learning Definition In Data mining, the problem of unsupervised learning is that of trying to find hidden structure in unlabeled data. Since the examples given to the learner are unlabeled, there is no error or reward signal to

Data Mining -[Data, Information, Knowlade,Architecture , Examples]

- May 21, 2018

1. Data mining is the process of analyzing data from different perspective and summarizing it into useful information. 2. Data : Extracting knowledge from large amount of data is called data mining. ex u search google , u get whatever u want with the help of data mining . gold mining. Data fact or raw material , unprocessed things ex 250- currently it is data, it has no meaning. Information - processing the data : -processing means - giving some meaning to data Information inform you something. In other words ,it must have some meaning , at this stage you will processed your data and put it into context. Take earlier example of data which was 250. we could now give it a meaning that is we could say that it means 250 student But this doesn't really inform us anything , now we need to put it into context. Now we can fully converted our data into information by not only saying 250 student , but by adding

Data Mining part -1 : Data Generate Per Day- 4 million terabyte

- May 20, 2018

Each minute of every day the following happens on the internet: Social Media is HUGE – Reports show that social media gains 840 new users each minute . Since 2013, the number of Tweets each minute has increased 58% to more than 455,000 Tweets PER MINUTE in 2017 ! Youtube usage more than tripled from 2014-2016 with users uploading 400 hours of new video each minute of every day! Now, in 2017, users are watching 4,146,600 videos every minute. Instagram users upload 46,740 million posts every minute! Since 2013, the number of Facebook Posts shared each minute has increased 22%, from 2.5 Million to 3 million posts per minute in 2016. This number has increased more than 300 percent, from around 650,000 posts per minute in 2011! Every minute on Facebook: 510,000 comments are posted, 293,000 statuses are updated, and 136,000 photos are uploaded. Facebook users also click the like button on more than 4 million posts every minute ! 3,607,080 Google searches are conducted worldw