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Jasleen Sondhi 2023-09-17 03:25:53 +05:30
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@ -82,8 +82,6 @@ There are other types of logistic regression, including multinomial and ordinal:
![Multinomial vs ordinal regression](https://github.com/microsoft/ML-For-Beginners/blob/main/2-Regression/4-Logistic/images/multinomial-vs-ordinal.png) ![Multinomial vs ordinal regression](https://github.com/microsoft/ML-For-Beginners/blob/main/2-Regression/4-Logistic/images/multinomial-vs-ordinal.png)
\
#### **Variables DO NOT have to correlate** #### **Variables DO NOT have to correlate**
@ -306,6 +304,7 @@ log_reg_wf
After a workflow has been *specified*, a model can be `trained` using the [`fit()`](https://tidymodels.github.io/parsnip/reference/fit.html) function. The workflow will estimate a recipe and preprocess the data before training, so we won't have to manually do that using prep and bake. After a workflow has been *specified*, a model can be `trained` using the [`fit()`](https://tidymodels.github.io/parsnip/reference/fit.html) function. The workflow will estimate a recipe and preprocess the data before training, so we won't have to manually do that using prep and bake.
```{r train} ```{r train}
# Train the model # Train the model
wf_fit <- log_reg_wf %>% wf_fit <- log_reg_wf %>%
@ -345,8 +344,6 @@ The [**`conf_mat()`**](https://tidymodels.github.io/yardstick/reference/conf_mat
```{r conf_mat} ```{r conf_mat}
# Confusion matrix for prediction results # Confusion matrix for prediction results
conf_mat(data = results, truth = color, estimate = .pred_class) conf_mat(data = results, truth = color, estimate = .pred_class)
``` ```
Let's interpret the confusion matrix. Our model is asked to classify pumpkins between two binary categories, category `white` and category `not-white` Let's interpret the confusion matrix. Our model is asked to classify pumpkins between two binary categories, category `white` and category `not-white`