Question

Difference between deterministic algorithm and probabilistic algorithm

Answer 1

Probabilism is an epistemic model, where as determinism is an ontic model. They address different things. One addresses what we can or cannot know about something, and the other addresses what exists. 

Determinism just means every event has a cause (whether that be a local cause or a non-local cause as some deterministic models of quantum mechanics postulate). Probabilism means that we either don't have or can't have all of the information to assess the specifics of an event, so we have to assess a probability.