positive_replacement_decay and read_replacement_decay

[winkcor]

I'm trying to understand the behavior of the positive_replacement_decay and read_replacement_decay parameters in the [recommend.replacement] section.

In docs explain about Replacement but I'm a little confuse

1. If increase positive_replacement_decay closer to 1, will an item that has received positive feedback move up in the recommendation list or down?
2. Similarly, if I increase read_replacement_decay closer to 1, will an item that has been "read" (but hasn't received a positive reaction) stay higher in the recommendation list or move down?

[recommend.replacement]

# Replace historical items back to recommendations. The default value is false.
enable_replacement = true

# Decay the weights of replaced items from positive feedbacks. The default value is 0.8.
positive_replacement_decay = 0.2

# Decay the weights of replaced items from read feedbacks. The default value is 0.6.
read_replacement_decay = 0.8

From what I understand based on the documentation, it seems that increasing positive_replacement_decay towards 1 will push positively reacted items up in the recommendation list, and increasing read_replacement_decay towards 1 will help "read" items maintain their higher order in the list. Could you confirm if this interpretation is correct?