So the thing about the allusions and references in literature (or any other art) is that its somewhere between hard and impossible attribute them exhaustively a

So the thing about the allusions and references in literature (or any other art) is that its somewhere between hard and impossible attribute them exhaustively and conclusively. Sometimes they're intentional, explicit, and umambiguous inserts by the artist, who may or not admit to them for various readons. But more often, they're subjective associations made by an individual observer (perhaps even the artist-as-observer), with at best a dynamic and often-disputable consensus among clusters of such observers. Conceptually, each user of a system like yours might anticipate a map that's meaningfully different from that of any other user. There's still something imformative and expressive in publishing a map of "well, this is what I/we see as the allusions and references here" and visitors might be inspired to new windows on familiar works, but it mostly wouldn't have much a ground truth beneath it. It would, in fact, just be a work of art itself.