anchor.diff:  
               { 
                   "dataset-id": "<dataset-id>",
  -		"specification-url": "http://s3.com/mnist_solver.prototxt",
  +                "specification-url": "http://s3.com/mnist_solver.prototxt",
                   "specification-net-url": "http://s3.com/mnist_train_test.prototxt"
               }
   
  
positive.code:                   "training":{  
                       "description":"The training portion of the dataset.",
                       "type":"object",
  		     "properties":{
  		         "datafile-id": {
  			     "type": "string",
  			     "description": "The id of the Datafile object"
  			 },
  		         "split-percentage": {
  			     "type": "number",
  			     "description": "The percent of datafile that should be used for training.  Or 0.0 if passing two distinct Datafile id's in training/testing"
  			 }
  		     }  
                    },
                    "testing":{  
                       "description":"The testing portion of the dataset.",
                       "type":"object",
  		     "properties":{
  		         "datafile-id": {
  			     "type": "string",
  			     "description": "The id of the Datafile object"
  			 },
  		         "split-percentage": {
  			     "type": "number",
  			     "description": "The percent of datafile that should be used for training.  Or 0.0 if passing two distinct Datafile id's in training/testing"
  			 }
  		     }  
                    }
  	       }
                 "required":[  
                    "training",
                    "testing"
                 ],
                 "additionalProperties":false
              }
  
  
negative.code: 
              { 
                  "training": {
                      "datafile-id": "datafile-uuid", 
                      "split-percentage": 0.7
                  },
                  "testing": {
              "datafile-id": "datafile-uuid", 
                      "split-percentage": 0.3
                  }
              }
  