Here are two recent entries on the big but neglected issue of data reliability and analytic validity (DR&AV), from the vast commentariat that is LinkedIn: One of my complaints with hashtag#bigdata, is there isn’t enough focus on getting the right kind of data. We deal with this in healthcare all the time. Much of our transactional data is just outcomes. There’s a push in the industry to change health behaviors (generally: population health). But if we’re not collecting meaningful behavioral data (could be secondary data like credit card purchases or primary like surveys about health attitudes), we can’t
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