Problem Solving Tools

Creating Ahh-ha! moments for business solutions.

In our last 2 posts we covered how to use some basic tools of Hoshin Kanri like the Affinity Diagram (AD).

Now let’s look at how we can find cause and effect relationships from the natural groupings we created using the AD.

Enter the Interrelation Digraph. (IRD)

The facilitator will place the header cards from the AD on a flip chart in a circle. The group will then begin to make decisions about whether each header card has an influence, or is influenced by, another card (IE: does card “A” have an influence on card “B”?) Draw an arrow from the influencing card to the influenced card. This is done for all of the cards, usually 4-6. Then we count all of the outgoing arrows from each card. These are your causers. Now count all the incoming arrows to each card. They are the effects. Score your in and out arrows. (IE: A-5 in arrows and 1 out arrow, B-2 in and 4 out, etc…) There will be a card that has the greatest influence (out’s) on the effects (in’s) of the problem at hand. You will now better understand what relationships exist and will know what actions to take to create improvement.

#Hoshin #lean #Leantransformation

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