Responds to a GET request to /mostSurprising/[userID](?howMany=n)(?offset=o) . This is like an anti- recommend method, where the results are taken from amongthe items that the user has already interacted with, and the results are items that seem least-likely to be interacted with according to the model. Outputs contain item and score pairs, where the score is an opaque value where higher values mean more surprising. If the user is not known to the model, a javax.ws.rs.core.Response.Status#NOT_FOUND response is generated.If the user has no known items associated, the response has no elements. howMany and offset behavior, and output, are as in Recommend .