HOW TO MAKE DECISION (SIMPLIFYING DECISION TABLE)

Hello everybody I’m David Durant: Welcome to this presentation on simplifying decision tables. Only limited entry decision tables can be simplified and usually in connecting with a completeness check. You will see in this video how we will take a complex set of rules and pull it out to express them as a decision table and then simplify the table using a logical process. Let us look at an example that shows how a set of complex rules can be expressed as a decision table and then simplified using a rigorous, logical process. The end result is much easier to read and maintain. This limited-entry decision table is to decide whether what matter to accept or reject a customer's order. There are three conditions. The customer's credit limit been exceeded? Are they a prompt payer? Do they have special clearance? The associated action, depending on the combination of the conditions, is to either accept the order or to reject it. This is our simplifying rule. . . Any two rules which have identical entries except for one condition rule which contains a Y and N may be consolidated into one rule which contains a dash in place of the Y and N. Obviously, the rules must have the same action. So in the example, we can simplify rules 7 and 8. They have the same action and differ only by the Y and N in the third condition so the resulting consolidated rule will become N - X - Rules 5 and 6 can be simplified to the rule N Y - X -However, rules 1 and 2 can't be simplified because they have a different action. But rules 1 and 3 can be.  To offer Y - Y X -And end, rules 2 and 4can be consolidated to offer the rule Y - N – X so the resulting table will have four rules. This table can be simplified further. If we look at the rules 3 and 4, we see they are identical except for the second condition is the customer a prompt payer? By simplifying these two rules, the resulting table will just have three. A third rule N - - X -This table cannot be simplified any further more using the simplifying rules. We can see that term test 2Is the customer a prompt payer? Is no longer relevant and can be removed. One final thing we can do is keeping rule 2 and for the rules 1 and 3 must be replace with an Else rule. In simplifying the decision table, we have logically reduced the 8 rule table to 1 rule and the Else rule. The resulting decision table is to only reject the order where the customer has exceeded the credit limit and they don't have special clearance. Thus we will accept it. I hope you found this video useful. More videos like this you can visit at rapidgen. com/videos please let us know if you have any questions about simplifying decision tables, or if we can help.  Send us an email at info@rapidgen. For Video please click the link here>>>> <http://www.rono.tk/2016/06/how-to-make-decision-simplifying.html>  Thank you for reading and watching.