From the course: Predictive Analytics Essential Training: Data Mining
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Understanding the data preparation law
From the course: Predictive Analytics Essential Training: Data Mining
Understanding the data preparation law
- [Instructor] Most of us have heard the quote that data scientists spend 70, or even 80% of their time doing data prep. It's usually said to inspire the kind of comradery you get from complaining together. You hear it at a conference, or maybe just chatting at the water cooler. The third law, the data preparation law, gets us thinking about why this is so. Data preparation is more than half of every data mining process. F`rankly, this is my favorite law. I quote it all the time. Tom is making a strong claim here. He's saying that it's always more than half. He even implies that it always will be. So why is it always more than half? And why do I feel so strongly about it? Well it's very popular these days to talk about self-service analytics and the notion that either software can make data prep go away or that having IT do data prep and cleaning at the enterprise level for the whole organization can make data…
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CRISP-DM and the laws of data mining49s
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Understanding CRISP-DM2m 39s
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Advice for using CRISP-DM4m 47s
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Understanding the nine laws of data mining1m 52s
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Understanding the first and second laws2m 7s
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Understanding the data preparation law4m 4s
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Understanding the laws about patterns4m 13s
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Understanding the insight and prediction laws2m 12s
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Understanding the value law2m 18s
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Understanding why models change2m 39s
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