<p>Business (marketing), Statistics, or CS.
In the business world, usually CS people end up doing the actual mining, but the business people think that they are the only ones smart enough to actually define how the data is represented or that they are the only ones smart enough to interpret and understand the data. In the scientific world it probably works the same way: the CS people get the data, manipulate it, reformat it, merge it, sort it, collapse it, massage it, etc. but the biologists, etc. insist that people with their expertise need to analyze the mined data.</p>