Hello.....
I have to get more smarter..
Yet about PERT (The program evaluation and review technique)..
I think PERT is still useful..
The very important think to know is this:
1- PERT works best in projects where previous experience can be relied
on to accurately make predictions.
2- To not underestimate project completion time, especially if delays
cause the critical path to shift around, you have to enhance with point
number 1 above or/and management time and resources can be applied to
make sure that optimistic and most likely and pessimistic estimates
of the cost of activities are accurate.
This is the way it is with PERT..
So i think i will stay with my PERT library that is still useful.
Here it is:
PERT (The program evaluation and review technique) for Delphi and
Freepascal was updated to version 1.21..
I have just taken a look at the following statistical PERT:
https://www.pluralsight.com/blog/it-ops/statistical-pert-estimates
And i think you don't need it, because i have just added the following
function to my PERT library:
function InvNormalDist(const Mean, StdDev, PVal: Extended; const Less:
Boolean): Extended;
For InvNormalDist(), you pass the best estimate of completion time to
Mean, and you pass the critical path standard deviation to StdDev, and
you will get the length of the critical path of the probability PVal,
and when Less is TRUE, you will obtain a cumulative distribution.
Also my PERT library uses a CPM algorithm that uses Topological sorting
to render CPM a linear-time algorithm for finding the critical path of
the project, so it's fast.
And i have also included a 32 bit and 64 bit windows executables called
PERT32.exe and PERT64.exe (that take the file, with a the file format
that i specified, as an argument) inside the zip, it is a very powerful
tool, you need to compile CPM.java with compile.bat before running them.
Now my PERT library is more professional.
You can download the new version 1.21 of my PERT library from:
https://sites.google.com/site/aminer68/pert-the-program-evaluation-and-review-technique-for-delphi-and-freepascal
Thank you,
Amine Moulay Ramdane.