Classify
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Request Definition::

    string[] ids     # ids to classify
    float32 unknown_probability # Recognitions with a probability above this theshold will get the corresponding type in the world model
    
    
Response Definition::

    
    string[] ids     # ids that where classified
    
    CategoricalDistribution[] posteriors   # Posterior probability distribution per id
    
    # The following is just for convenience, and can be derived from the posteriors:
    string[] expected_values                # Expected values based on posteriors, per id (empty is unknown)
    float32[] expected_value_probabilities  # Expected value probabilities, per id
    
    string error_msg