For those three particulars posted, they are float multipliers.
So, 1 would be the equivalent of 100% or "normal".
0 would be 0%, so for death, no exp loss. For Group, that means no exp bonus. Etc.
AA XP is similar. It confers a bonus to how fast you gain AA. (I think anyway, not 100% sure on this one.)
But you are right, we do need to setup a table with proper explanations of the rules,
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