Machine Learning

 While executing PowerShell script if you get  + FullyQualifiedErrorId : UnauthorizedAccess error.  Please follow below steps. 1. Execute >Get-ExecutionPolicy -Scope CurrentUser  If this returns Undefined then we have to give access to current user to execute PowerShell command.  2. Execute >Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser 3. Now you should be able to run Powershell Command.  4. Once you have done with work then again revoke access as best practice.  5. Execute >Set-ExecutionPolicy -ExecutionPolicy Undefined -Scope CurrentUser Activate Virtual Environment using below command. 

Evolution of computer is beyond comparison. Something extra ordinary, It hard to believe that we will achieve so much in this field in this small time interval. In this blog we are going to discuss about some of those most important event in history of computes.  1. 1950 : Vacuum Tubes  takes lot of energy.  2. Later 1950 : Transistors  Same functionality as vacuum tubes but takes less space and energy using semiconductor. Transistor radio.  3. 1960 : The Integrated Circuits (IC) millions of tiny transistors in small board.  4. 1970 : The Personal Computer  Datapoint 2200 first personal computer.  5. 1975 : Altair 8800. New Basic language. Microsoft Bill Gates and Paul Allen. 6. 1976 : Steve Jobs and Steve Wozniak started Apple. Single-circuit board.  7. 1981 : IBM Model 5150 with 4.77MHz Intel processor and Microsoft's MS-DOS operating system.  8. 1983 : Apple's Lisa with graphic user interface (GUI). Mouse 9. 1984 : Apple Macintosh and...

 In this we are going to explain about Type I and Type II error like false positive and false negative. False positive False - Outcome whether is was true or False Positive - It's action or indication by device or process.  False Positive : Device say it's there which is in actual false mean in actual it was not there . False alarm. False negative : kind of device is not working. negative means device say it's not there. Which is false statement. so in actual it's there but device not able to detect. Broken Alarm.  Example: There is a Alien detector machine. Which indicate if there is any alien nearby.  False positive : positive means detector say there is an Alien which is false. In actual there is no Alien. This situation is fine as we might check manually for Alien or get alert. Even though it's false alarm not getting any harm.  False Negative : Negative means detector say there is no Alien which is false. In actual there is an Alien. This is not good be...

 Visualization help us to understand data in better way. This is specially important when we have lot of data say million or billions of records. Just looking at data we might not get the relationship or inside trend of data.  Today, we are going to learn about line chart using matplotlib library.  from matplotlib import pyplot as plt years = [2009, 2011, 2012, 2012.5, 2013, 2013.5, 2014, 2014.5, 2015, 2015.5, 2016] scores = [76.6, 80, 88, 88, 87, 88, 87, 87, 85, 87, 86] plt.plot(years, scores, color='blue', marker='X', linestyle='dashdot') plt.title("Performance") plt.ylabel("Score %") plt.show() With example we learned how to create line chart. Now we will learn where to use to line chart.  Trends : If we wanted to show trend like search engine preferred by people over time or stock time change over time.