I am actually not sure about the recall = 0 and recall = 1. I am trying to draw the recall vs precision curve. Interpolation is taking the max precision between two standard recall level. I am explaining- when I am drawing the recall vs precision curve,
max precision between 0.0 ~ 0.1 will be drawn at recall 0. max precision between 0.1 ~ 0.2 will be drawn at recall 0.1. max precision between 0.2 ~ 0.3 will be drawn at recall 0.2. ... max precision between 0.9 ~ 1.0 will be drawn at recall 0.9.
then what will be the value at recall 1.0?
If I started assigning precisions from recall 0.1 then what will be the precision at recall 0?
In some cases I have seen at recall 0 precision is 1 but did not get any explanation. For average precision its not 1. Not getting any explanation.
It is a interpolated recall-precision curve. What will be the precision at recall 1? I have 11 recall value in x-axis but 10 precision value for y-axis. so, how to draw the curve?