Articles by Nils Ross

NYC buses: C5.0 classification with R; more than 20 minute delay?

December 1, 2018 | Nils Ross

CategoriesAdvanced Modeling Tags Data Management Data Visualisation R Programming We are continuing on with our NYC bus breakdown problem. When we left off, we had constructed a rule-based Cubist regression model with our expanded pool of predictors; but we were still only managing to explain 37% of the data's variance with ...
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NYC buses: Cubist regression with more predictors

November 30, 2018 | Nils Ross

CategoriesAdvanced Modeling Tags Data Management Linear Regression R Programming We have previously added a set of company identity-agnostic predictors, such as the number of drivers a company employs, or the number of vehicles in the fleet with a hydraulic lift, and so on. we took this approach, rather than having ...
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NYC buses: simple Cubist regression

November 29, 2018 | Nils Ross

CategoriesAdvanced Modeling Tags Data Manipulation Machine Learning R Programming Tips & Tricks We continue on from our previously loaded data of NYC bus delays. Although we are fairly sure that our target variable (time_delayed) is not accurate, it is all we have. We can thank the bus drivers of New ...
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NYC buses: company level predictors with R

November 28, 2018 | Nils Ross

CategoriesBasic Statistics Tags Data Management R Programming We are following on from our previously loaded data of NYC bus delays, and from our simple Cubist regression fit. We know that we need to add in more predictors, and we have access to company level data. A warning to the faint-hearted: ... [Read more...]

Visualization of NYC bus delays with R

November 27, 2018 | Nils Ross

CategoriesAdvanced Modeling Tags Data Manipulation Data Visualisation ggplot2 R Programming The motivation for choosing this data set to explore is straightforward: I wanted a real-world data set for which additional meta data would be easy to find, making NYC data perfect; I wanted something which did not require specialised domain ...
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