Study path for artificial intelligence and Machine learning:

Andrew Ng's lecture series on AI

Andrew Ng's lecture at the Stanford Business School

Andrew Ng - The State of Artificial Intelligence

Andrew Ng is a visiting professor at Stanford, founder of Coursera and currently the head of research at Alibaba. The above videos should give you all the basics you need about AI.

Below schema from this article I like this map below - because there are a lot of areas and directions in learning AI it shows it as subway map: AI study map

powershell sitecore remove item from pipe separated list

here is function how to do it :

   
[string]$test ="{uka}|{taka}|{4aka}|{boom}"


function RemovePipeElement {
    param (
        [string]$body,
        [string]$elem

    )
    [string]$res=$body;
    [int]$a=$body.IndexOf($elem)
    if ($a -gt -1) {
        [string]$newbod="";
        [bool] $first=$TRUE;
        $arr=$body.split("|");

        foreach ($e in $arr) {
            if ($e -ne $elem ) {
                if ($first){
                    [string]$newbod=$e;
                    $first=$FALSE;
                }else{
                    [string]$newbod=$newbod+"|"+$e;
                }
            }
        }
        $res=$newbod;
    }

        return $res;
}

 Write-Host "$test"

 [string]$uid=RemovePipeElement $test "{uka}";
 Write-Host "$uid"

 [string]$uid=RemovePipeElement $test "{4aka}";
 Write-Host "$uid"

 [string]$uid=RemovePipeElement $test "{boom}";
 Write-Host "$uid"

 [string]$uid=RemovePipeElement $test "{taka}";
 Write-Host "$uid"