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Julia for Data Science

You're reading from  Julia for Data Science

Product type Book
Published in Sep 2016
Publisher Packt
ISBN-13 9781785289699
Pages 346 pages
Edition 1st Edition
Languages
Author (1):
Anshul Joshi Anshul Joshi
Profile icon Anshul Joshi

Table of Contents (17) Chapters

Julia for Data Science
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
1. The Groundwork – Julia's Environment 2. Data Munging 3. Data Exploration 4. Deep Dive into Inferential Statistics 5. Making Sense of Data Using Visualization 6. Supervised Machine Learning 7. Unsupervised Machine Learning 8. Creating Ensemble Models 9. Time Series 10. Collaborative Filtering and Recommendation System 11. Introduction to Deep Learning

Distribution fitting


Distribution fitting is the fitting of a probability distribution to a series of data to predict the probability of variable phenomena in a certain interval. We can get good predictions from the distribution, which is a close fit to the data. Depending on the characteristics of the distribution and of the phenomenon, some can be fitted more closely with the data:

julia> d = fit(Distribution_type, dataset) 

This fits a distribution of type Distribution_type to a given dataset; dataset.x is of the array type and comprises all the samples. The fit function finds the best way to fit the distribution.

Distribution selection

The distribution is selected by the symmetry or the skewness of the data with respect to the mean value.

Symmetrical distributions

For symmetrical distributions tending to have the bell curve, the normal distribution and the logistic distributions are most suited. When the kurtosis is higher, the values are spread far away from the center, and then...

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