In heliopais/turingerror: Probabilistic Turing Error

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures"
)
library(turingerror)

turingerror

Overview

Commonly used model accuracy metrics such as Mean Average Error (MAE) and Root Mean Squared Error (RMSE) can produce erroneous results for sparse datasets, i.e., where the amount of information in most items in the dataset is low.

For such datasets it makes more sense to measure prediction errors by comparing predicted and observed values across items. The turingerror package includes functions that calculates model prediction errors in this way.

Installation

Currently the turingerror package is available from github.

If you have devtools then you can simply run

devtools::install_github("heliopais/turingerror")

Usage

For conversion data you need to supply:

• a data.frame containing the data
• the name of the column in the data.frame containing the number of trials per item
• the name of the column in the data.frame containing the number of successes per item
• the name of the columns in the data.frame (at least 1, but there can be more) containing the predicted conversion per item. Each of these columns corresponds to a different prediction model

You can then call the corresponding Turing Error function with these arguments. For example:

conversion_turing_error(my_data_frame, 
                        'my_trials_column', 
                        'my_successes_column',
                        'my_predictions_column')

heliopais/turingerror documentation built on May 17, 2019, 3 p.m.