## What's in a rating? A Crunchy EDA.

Posted on December 12, 2017

Introduction and aim
Correlation
Regression
Diagnostics.
Conclusions
Zachs Challenge ;-)
Anova & checking Assumptions
Assumption of normality
Assumption of homogeneity of variance
Test performance
Acknowledgements
References

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Tags:
tidyverse, caret, ANOVA, Shapiro-Wilk, Homoskedasticity

## Comparing Models with the Wisconsin Breast Cancer dataset

Posted on August 23, 2017

Import the data
Tidy the data
Understand the data
Transform the data
Pre-process the data
Using PCA
Using LDA
Model the data
Logistic regression
Random Forest
KNN
Support Vector Machine
Neural Network with LDA
Models evaluation
References

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Tags:
tidyverse, caret, PCA, Logistic Regression, SVM, Random Forest, KNN

## Rollin', rollin', rollin' on the river

Posted on May 14, 2017

Caluclate Rate of Change, aka ROC
Tidyways ….
The TTR way
Conclusion
Calculate Simple Moving Average
TTR package
the Zoo package
RcppRoll package
RollingWindows
The Roll package
Conclusion

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Tags:
tidyverse, xts, zoo, RccpRoll, RollingWindows, ROC, benchmark

## Using the purrr package to write children book

Posted on May 11, 2017

Some time back in the #rstat twitter-verse, there was a silly challenge thrown out there to see who could use the map functions from the purrr package to write one of the famous children book. It did took me quite a while to have it right to the punction and...

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Tags:
purrr, entertainment

## Logistic Regression Part 1

Posted on March 15, 2017

Introduction
The logistic equation.
Performance of Logistic Regression Model.
Setting up
Example 1
Modeling
ROC and cutoff point
AUC
References

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Tags:
classification, regression, tidyverse, ROC, AUC