If you an experienced data miner looking for a new challenge or a recent graduate just looking to enter the field, being prepared for interviews is crucial. In my years of leading a data mining company, I have done my share of interviewing candidates for open positions. I thought you might like to hear about my approach to interviewing and hiring.
- Which nation will bring home the most medals at the upcoming Winter Olympics in Sochi, Russia?
- Will any nation from Africa, South America, or the Middle East finally break through and win a medal?
- Why do some nations win a bundle of medals while others win only a few?
- Can data mining give us the answers to these questions?
At Discovery Corps, we use data about the past to predict the future all the time. We help businesses decide which potential customers are the most likely to want their product or service. We help non-profit organizations predict which small-dollar donors have the potential to become big-dollar donors. If an organization has data on the past, we can help them predict the future. So I knew that data mining techniques could give us an estimate of the number of medals each nation might win; but I wondered how close we could get to the actual outcomes. Read the full article.
When creating a predictive model, data miners need to “tune” it to our client's needs. We need to strike the right balance for them between missed opportunities and false alarms. For some clients, the model's cut-off point between 'promising' and 'unpromising' must be set lower to avoid missed opportunities. For others it needs to be set higher to avoid false alarms. Since no predictive model can be perfect, we need to tweak it to make the "right kind of mistakes." Read the full article.
Have you ever listened to a really poor data mining presentation? Have you ever given one? You are not alone. Improving our presentation skills will make for happier clients, bosses, and co-workers. By the time you finish reading this article, you will pick up five crucial delivery tools that will make your next presentation twice as good as your last.
Discovery Corps president Tim Graettinger is a co-presenter of a free webinar on Data Mining offered regularly (about once a month). These 1-hour interactive events are offered by The Modeling Agency, one of Discovery Corps’ marketing partners. The next webinar will be Wednesday, December 12th at 4:00 pm (U.S. Eastern). The webinar, titled “Data Mining: Failure to Launch,” provides a brief introduction to data mining, as well as a Question & Answer session. It’s an especially good opportunity for businesses who have been contemplating a data mining project to ask questions of a data mining pro. Find out more about it here. Then join Tim and ask the questions that have been on your mind!