Uspořádejte modely pomocí broom

Machine Learning in the Tidyverse

Dmitriy (Dima) Gorenshteyn

Lead Data Scientist, Memorial Sloan Kettering Cancer Center

Pracovní postup se sloupcovými seznamy

Machine Learning in the Tidyverse

Pracovní postup se sloupcovými seznamy

Machine Learning in the Tidyverse

Sada nástrojů broom

  • tidy(): vrátí statistické výsledky modelu (např. koeficienty)

  • glance(): vrátí stručné jednořádkové shrnutí modelu

  • augment(): přidá do dat predikční sloupce

Machine Learning in the Tidyverse

Souhrn modelu algeria_model

Machine Learning in the Tidyverse

tidy()

Machine Learning in the Tidyverse

tidy()

library(broom)

tidy(algeria_model)
         term      estimate   std.error statistic      p.value
1 (Intercept) -1196.5647772 39.93891866 -29.95987 1.319126e-33
2        year     0.6348625  0.02011472  31.56209 1.108517e-34
Machine Learning in the Tidyverse

glance()

Machine Learning in the Tidyverse

glance()

glance(algeria_model)
r.squared adj.r.squared    sigma statistic      p.value df    
0.9522064     0.9512505 2.176948  996.1653 1.108517e-34  2 
logLik        AIC       BIC           deviance    df.residual
-113.2171     232.4342  238.288       236.9552     50
Machine Learning in the Tidyverse

augment()

augment(algeria_model)
   life_expectancy year  .fitted   .se.fit     .resid       .hat   .sigma 
1            47.50 1960 47.76581 0.5951714 -0.2658128 0.07474601 2.198695 
2            48.02 1961 48.40068 0.5779264 -0.3806753 0.07047725 2.198326 
3            48.55 1962 49.03554 0.5608726 -0.4855379 0.06637924 2.197878 
4            49.07 1963 49.67040 0.5440279 -0.6004004 0.06245198 2.197265 
5            49.58 1964 50.30526 0.5274124 -0.7252630 0.05869547 2.196455 
6            50.09 1965 50.94013 0.5110485 -0.8501255 0.05510971 2.195498 
Machine Learning in the Tidyverse

Vizualizace rozšířených dat

augment(algeria_model) %>% 
  ggplot(mapping = aes(x = year)) +
  geom_point(mapping = aes(y = life_expectancy)) +
  geom_line(mapping = aes(y = .fitted), color = "red")

Machine Learning in the Tidyverse

Vyzkoušejte si broom!

Machine Learning in the Tidyverse

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