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Shahram Abyari's Blog (2)

Introduction to Outlier Detection Methods

This post is a summary of 3 different posts about outlier detection methods. 

One of the challenges in data analysis in general and predictive modeling in particular is dealing with outliers. There are many modeling techniques which are resistant to outliers or reduce the impact of them, but still detecting outliers and understanding them can lead to interesting findings. We generally define outliers as samples that are exceptionally far from the mainstream of data.There is no rigid…

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Added by Shahram Abyari on January 18, 2016 at 3:30pm — 5 Comments

Resolving Skewness

The fundamental assumption in many predictive models is that the predictors have normal distributions. Normal distribution is un-skewed. An un-skewed distribution is the one which is roughly symmetric. It means the probability of falling in the right side of mean is equal to probability of falling on left side of mean.

This article outlines the steps to detect…

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Added by Shahram Abyari on December 25, 2015 at 7:00am — 4 Comments

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