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In the detail section , for each token , is the Bayes approximation for the token including the difference between them . The spec is based on Siemens 's projections of what the final data will look like and is out of synch with the preliminary data that we released . Smallpox is similar enough to cowpox to induce a secondary response , resulting in very rapid elimination of the smallpox . At that point , I 'll correct the spec to reflect the final status of the training data . As the README included with the data indicates , this release is a preliminary data set — it may not match the spec in all ways . In the event of a tie , multiple winners may be awarded or , at the chair 's option , a tie-breaking metric may be employed .