How can I measure the Customer Satisfaction (CS)?

[alau]

Which Data Mining techniques I can use to measure it?
Or which software provides such functions.

[herunique]

Well, it hard to be specific when you haven't shared what your company offers, but I will share the following:

A great place to start is to first understand the Value of a Customer.

A. Average customer revenue per transaction?
B. Number of transactions per month, year?
C. Revenue per year (AxB)
D. Customer lifetime in years (average)
E. Customer lifetime value (CxD)

Indirect Value (Word of Mouth)
F. Happy customer tells five people on average (Ex5)
G. Revenue generated from referrals (assuming only 25% purchase from you) (Fx.25)

And this calculation of the value of a customer is conservative.

By doing your homework in this area by working with your finance department it will then help you to identify if and when your customers are repeat customers. If they're not you could always conduct follow up surveys with your customers to determine where your company has fallen short.
I hope this helps.

[TeamLeader]

Or you could simply send your customer a survey if you deal with people one-on-one. That's what we do, once a month we randomly select between 50 to 100 customers that have called us in the previous week and send them a survey asking how they felt about our services.