For example, if you run regression analysis with the following data, one of the ramen shops, Japanese food, Chinese, and Italian will be erased.

ID	Sales	Store type
1	1930	Ramen shop
2	2520	Japanese food
3	1185	Ramen shop
4	1460	Chinese
5	1770	Italian
6	930	Chinese
7	1890	Italian
8	2500	Japanese food
9	3000	Japanese food

There are two questions.

1. Is the understanding that the deleted item is rated 0?
   For example, if the analysis results are {Japanese food: 1100}, {Chinese food: -560}, {Italian: 430}, selecting Ramen shop will increase Pramai 0, selecting Japanese food will increase 1100 points, selecting Chinese will lower 560 points , Interpretation is that 430 points will be highly evaluated if Italian is selected. (The numbers are only applied appropriately and are not actually analyzed.)

Is there any way to display all 4 items without deleting

2. items? Or is it possible to choose the items to be deleted by yourself?

I would appreciate it if you could teach someone.