The semantic coherence component expresses how well a candidate s rewrites individual words and realizes the semantic relationships that exist in the human-authored story s. Ideally, we would like to preserve enough of the semantics of s in order to produce a coherent story s , yet we are populating s with words taken from an unrelated theme.
we model the semantics of a story s in terms of the lexical semantics contributed by individual words as well as semantic relationships that exist between its elements.