He sees Empedocles' work as a primitive anticipation of Plato, a significant union of spiritual other-worldiness with the philosophical and scientific traditions of the Presocratics.
(Empedocles' Cosmic Cycle, by D. O'Brien).
An activity anticipates another activity, a product anticipates another product. So either Empedocle's writing anticipates Plato's writing his dialogues, or Eempedocles' work is the forerunner of Plato's books.
Here the speaker says that a work of one thinker(an object) is an anticipation of another thinker. I donot know why, because it is beyond my understanding of "antipication" as set forth above.