Workshop

Introduction to Python and Jupyter Notebooks

Published

Nov 16, 2017

Author

Introduction to Python and Jupyter Notebooks Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. This workshop is a quick introduction to using Python and Jupyter Notebooks. Python For most Data Science tasks there are two competing Open Source languages. R is favoured more by those with a mathematical background. Python is preferred by those with a programming background; all of my workshops are currently in Python.

Information and Entropy

Published

Nov 16, 2017

Author

Information and Entropy Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. Remember the goal of data science. The goal is to make a decision based upon some data. The quality of that decision depends on our information. If we have good, clear information then we can make well informed decisions. If we have bad, messy data then our decisions will be poor.

Histograms and Skewed Data

Published

Nov 16, 2017

Author

Histograms and Inverting Skewed Data Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. When we first receive some data, it can be in a mess. If we tried to force that data into a model it is more than likely that the results will be useless. So we need to spend a significant amount of time cleaning the data. This workshop is all about bad data.

Entropy Based Feature Selection

Published

Nov 16, 2017

Author

Entropy Based Feature Selection Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. One simple way to evaluate the importance of features (something we will deal with later) is to calculate the entropy for prospective splits. In this example, we will look at a real dataset called the “mushroom dataset”. It is a large collection of data about poisonous and edible mushrooms. Attribute Information: (classes: edible=e, poisonous=p) 1.

Data Cleaning Example - Loan Data

Published

Nov 16, 2017

Author

Data Cleaning Example - Loan Data Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. A huge amount of time is spent cleaning, removing, scaling data. All in an effort to squeeze a bit more performance out of the model. The data we are using is from Kaggle, and is available in raw from from here. You will need to sign into kaggle if you want to download the full data.

Root Cause Analysis: The 5-Whys

Published

Nov 11, 2017

Author

Root Cause Analysis: The 5-Whys Deciding what problem you should try and solve is one of the hardest steps to get right in Data Science. If you get it wrong, then you’ll spend significant amounts of time free wheeling around the rest of the data science process and end up with something that nobody wants or cares about. There is nothing worse that someone suggesting that your work has no value.

Probability Distributions

Published

Oct 29, 2017

Author

Probability Distributions Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. This workshop is about another way of presenting data. We can plot how frequent observations are to better characterise the data. Imagine you had some data. For sake of example, imagine that is a measure of peoples’ height. If you measured 10 people, then you would see 10 different heights. The heights are said to be distributed along the height axis.

Why do we use Standard Deviation?

Published

Oct 27, 2017

Author

Why do we use Standard Deviation and is it Right? It’s a fundamental question and it has knock on effects for all algorithms used within data science. But what is interesting is that there is a history. People haven’t always used variance and standard deviation as the defacto measure of spread. But first, what is it? Standard Deviation The Standard Deviation is used throughout statistics and data science as a measure of “spread” or “dispersion” of a feature.

Mean and Standard Deviation

Published

Oct 27, 2017

Author

Mean and Standard Deviation Welcome! This workshop is from Winder.ai. Sign up to receive more free workshops, training and videos. This workshop is about two fundamental measures of data. I want to you start thinking about how you can best describe or summarise data. How can we best take a set of data and describe that data in as few variables as possible? These are called summary statistics because they summarise statistical data.

What Is Data Science?

Published

Jul 15, 2017

Author

Dr. Phil Winder

CEO

Data Science is an emerging field that is plagued by lurid, often inconsequential reports of success. The press has been all too happy to predict the future demise of the human race.

But sifting through chaff, we do see some genuinely interesting reports of work that affects both bottom-line profit and top-line revenue.