Learnings from My First Yr of Being a Knowledge Analyst

Insights on coping with statistics, interacting with folks, and maximizing productiveness on the office

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In August final yr, I joined Google as a Knowledge Analytics Apprentice. It was the beginning of my working profession. Crossing the yr mark made me ruminate about what I had discovered in several dimensions of my job and work-life throughout this time. I don’t suppose there’s ever been a interval the place I’ve undergone a extra speedy metamorphosis. It’s been a problem however a enjoyable one!

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I’ve divided my studying into three classes: information science, productiveness, and other people.

  • In real-world information science issues, excessive accuracy shall be obtained just because the dataset is extraordinarily skewed and never as a result of the algorithm performs properly. You’ll be able to have a dataset with a negative-to-positive class ratio of 1000:1 (like for spam classification), and this imbalance will result in a excessive accuracy better than 99% if we classify all factors as detrimental. Therefore, it issues to decide on the fitting metric for analysis, which is recall on this case. A excessive recall rating would point out that the optimistic lessons are being…