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What's wrong with histograms and what are density estimators?

Estimating Probablity Densities

The other day I was reading Parzen's density estimators in Bishop. Density estimators are a non-parametric way of estimating the underlying probability distributions, that might have generated the data that you are handed over. Parametric methods consist of assuming a distribution, and then estimating the parameters ...


Are Iowa polls predictive?

What do Iowa polls tell us?

Everyone is staring hard at the polls in Iowa and trying to predict who the winners will be. There are data gurus, there are journalists, and everyone in between. But are these Iowa polls that predictive? I decided to look at the polls 4 ...

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