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The dimension objects represent values that are extracted from KDR UDRs and are used for grouping in KPI calculations. For instance, if the input data contains a field that represents a geographic region, it can be mapped to an object instance named "Region".

"dimension": {
     "Region": {
       "kdr_record_type_a": "region_name"
     }
 }

For further information about the dimension object type, see 2.3.1 dimension.

The tree objects contain nodes that describe the hierarchical structure of the dimensions.

The name of a tree object constitutes the root node of a tree. The root node may have one or more child nodes, e g "Region". A child node in turn may have its own child nodes, e g "City" or "Site", and so on.

"tree": { 
	"tree1": { 
		"Region": { 
			"Site": {} 
		} 
	} 
} 

For further information about the tree object type, see 2.3.2 tree.

The metric objects represent values that are extracted from KDR UDRs and aggregated according to the tree structure in the model. Expressions are applied on the various fields in the UDRs to calculate a value, e g a sum, average, or min/max value.

"metric": { 
	"AvgDuration": { 
		"fun": "avg", 
        "expr": { 
          "kdr_record_type_a": "field2-field1", 
          "kdr_record_type_b": "field3" 
        } 
	}     
}

For further information about the metric object type, see 2.3.3 metric.

The threshold objects contain a set of level objects that define limits for the KPIs. When a limit is exceeded within a defined period, a threshold object and a level object are referenced in the KPIOutput UDRs. You can define the limit values for a threshold object in ascending or descending order.

 "threshold": { 
	"Region.AD": { 
		"orderDescending": true, 
		"levels": { 
			"1": { 
            "alarmDescription": "", 
            "value": 200 
          }, 
          "2": { 
            "alarmDescription": "", 
            "value": 100 
          } 
        } 
	} 
} 

For further information about the threshold object type, see 2.3.4 threshold.

The kpi objects describe how metrics are linked to dimensions and threshold levels.
You may configure kpi objects to perform additional calculations based on metrics, e g ratios or sums of ratios.

"kpi": {
     "Region.AD": {
       "node": [
         "tree1",
         "Region"
       ],
       "windowSize": 60,
       "threshold": "Region.AD",
       "expr": "AvgDuration"
     }
 }

For further information about the kpi object type, see 2.3.5 kpi.