We in the data business have been saying that one of the big reasons you want Hadoop or other data tools is to perform machine learning on data. For the most part, this isn’t happening. Instead, machine learning has been a major contributor to the strategic snake oil reserve.
The definition of machine learning has been stretched beyond recognition. The best explanation for its common use today: “statistics, pattern recognition, and artificial intelligence” (but never say AI because the Cylons will get us or we’ll have another AI winter).