| Goodness of Fit : Mean Absolute Deviation {ehaGoF} | R Documentation |
Mean Absolute Deviation
Description
Calculates and returns mean absolute deviation (MAD).
Usage
gofMAD(Obs, Prd, dgt = 3)
Arguments
Obs |
Observed or measured values or target vector. |
Prd |
Predicted or fitted values by the model. Values produced by approximation or regression. |
dgt |
Number of digits in decimal places. Default is 3. |
Value
MeanAbsoluteDeviation |
Goodness of fit - mean absolute deviation (MAD) |
Author(s)
Prof. Dr. Ecevit Eyduran, TA. Alper Gulbe
References
Comparison of the Predictive Capabilities of Several Data Mining Algorithms and Multiple Linear Regression in the Prediction of Body Weight by Means of Body Measurements in the Indigenous Beetal Goat of Pakistan - Ecevit Eyduran, Daniel Zaborski, Abdul Waheed, Senol Celik, Koksal Karadas, Wilhelm Grzesiak.
Prediction of Selected Reproductive Traits of Indigenous Harnai Sheep under the Farm Management System via various Data Mining Algorithms - Daniel Zaborski, Muhammad Ali, Ecevit Eyduran, Wilhelm Grzesiak, Mohammad Masood Tariq, Ferhat Abbas, Abdul Waheed, Cem Tirink - Pakistan journal of zoology, 2019.
Comparison of Different Data Mining Algorithms for Prediction of Body Weight From Several Morphological Measurements in Dogs - S Celik, O Yilmaz.
Examples
# dummy inputs, independent variable
# integers from 0 to 99
inputs <- 0:99
# dummy targets/observed values, dependent variable
# a product of 2*times inputs minus 5 with some normal noise
targets <- -5 + inputs*1.2 + rnorm(100)
# linear regression model
model<-lm(targets~inputs)
# model's predicted values against targets
predicted<-model$fitted.values
# using library ehaGoF for Goodness of Fit function (GoF)
library(ehaGoF)
# Goodness of Fit : Mean Absolute Deviation
gofMAD(targets, predicted, dgt=4)