There has been much discussion on the web recently about the Data-Information-Knowledge-Wisdom or DIKW hierarchy and it is described by Patrick Lambe as "that most hallowed of mental models and glib explanations".
Here is a little bit of reading for you. I have started with Patrick as I think he provides a very balanced view of the concept. Like most diagrams of this kind so much depends on how you interpret its meaning.
Personally, I have never thought of it as a model and have never tried to use it to describe any form of process of moving from one to the other. I have simply seen it as a pretty diagram and have used it when explaining the differences between, data, information and knowledge and in recent years dropped it from my slide-set.
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