The metadata of the output attributes is created with the following rules.

Context Rule

Attribute Name

Context Name

Description

All the output attributes of this component

field_path

List of the superordinate concepts of each output attribute based on the following hierarchical structure of the output attributes:

root
├── fabhmerg
│   ├── assigned_comp_id
│   └── component
│       ├── 0
│       │   ├── predict
│       │   └── std_predict
│       ├── 1
│       │   ├── predict
│       │   └── std_predict
│        .
│        .
│        .
│
└── regression
    ├── actual
    ├── std_actual
    ├── predict
    └── std_predict

<component_id>_std_actual, <component_id>_std_predict, <component_id>_std_predict_c<hme_comp_id>

mean

Mean of the target values for learning.

<component_id>_std_actual, <component_id>_std_predict, <component_id>_std_predict_c<hme_comp_id>

std

Standard deviation of the target values for learning.

<component_id>_assigned_comp_id

active_comp_ids

List of component IDs corresponding to each prediction formula.

Derivation Rule

Attribute Name

Derived From

<component_id>_actual, <component_id>_std_actual

Derived from the target attribute.

<component_id>_predict, <component_id>_std_predict

Derived from the attributes which have non-zero coefficients in any prediction formula.

<component_id>_assigned_comp_id

Derived from the attributes used in the gating functions.

<component_id>_predict_c<hme_comp_id>, <component_id>_std_predict_c<hme_comp_id>

Derived from the attributes which have non-zero coefficients in the prediction formula of component id, <hme_comp_id>.

Example

{
    "nodes": [
        {"aid": "_sid", "name": "_sid", ... },

        ...

        {"aid": "dl1[0]", "name": "Superplasticizer_kg_in_a_m3_mixture", ... },
        {"aid": "dl1[1]", "name": "Coarse_Aggregate_kg_in_a_m3_mixture", ... },

        ...

        {"aid": "std1[0]", "name": "std1_Superplasticizer_kg_in_a_m3_mixture", "scale": "real",
         "is_excluded": false, "cid": "std1", "cindex": 0, "values": null, "is_kept": false,
         "context": {
             "std": 4.8989794855663543e-01,
             "mean": 1.0000000000000001e-01
         }
        },
        {"aid": "std1[1]", "name": "std1_Coarse_Aggregate_kg_in_a_m3_mixture", "scale": "real",
         "is_excluded": false, "cid": "std1", "cindex": 1, "values": null, "is_kept": false,
        "context": {
            "std": 4.0463422692599771e+01,
            "mean": 9.5183199999999999e+02
         }
        },

        ...

        {"aid": "fab1[0]", "name": "fab1_actual", "scale": "real", "is_excluded": false,
         "cid": "fab1", "cindex": 0, "values": null, "is_kept": false,
         "context": {"field_path": ["regression", "actual"]}
        },
        {"aid": "fab1[1]", "name": "fab1_std_actual", "scale": "real", "is_excluded": false,
         "cid": "fab1", "cindex": 1, "values": null, "is_kept": false,
         "context": {"std": null, "field_path": ["regression", "std_actual"], "mean": null}
        },
        {"aid": "fab1[2]", "name": "fab1_predict", "scale": "real", "is_excluded": false,
         "cid": "fab1", "cindex": 2, "values": null, "is_kept": false,
         "context": {"field_path": ["regression", "predict"]}
        },
        {"aid": "fab1[3]", "name": "fab1_std_predict", "scale": "real", "is_excluded": false,
         "cid": "fab1", "cindex": 3, "values": null, "is_kept": false,
         "context": {"std": null, "field_path": ["regression", "std_predict"], "mean": null}
        },
        {"aid": "fab1[4]", "name": "fab1_assigned_comp_id", "scale": "integer", "is_excluded": false,
         "cid": "fab1", "cindex": 4, "values": null, "is_kept": false,
         "context": {"active_comp_ids": [0, 5, 9, 10, 13, 20, 24, 27], "field_path": ["fabhmerg", "assigned_comp_id"]}
        },
        {"aid": "fab1[5]", "name": "fab1_predict_c0", "scale": "real", "is_excluded": false,
         "cid": "fab1", "cindex": 5, "values": null, "is_kept": false,
         "context": {"field_path": ["fabhmerg", "component", 0, "predict"]}
        },
        {"aid": "fab1[6]", "name": "fab1_std_predict_c0", "scale": "real", "is_excluded": false,
         "cid": "fab1", "cindex": 6, "values": null, "is_kept": false,
         "context": {"std": null, "field_path": ["fabhmerg", "component", 0, "std_predict"], "mean": null}
        },

        ...

    ],
    "links": [
        {"source": "std1[0]", "target": "fab1[3]"},
        {"source": "std1[0]", "target": "fab1[2]"},
        {"source": "std1[0]", "target": "fab1[19]"},
        {"source": "std1[0]", "target": "fab1[20]"},
        {"source": "dl1[4]", "target": "fab1[1]"},
        {"source": "dl1[4]", "target": "fab1[0]"},
        {"source": "dl1[1]", "target": "std1[1]"},
        {"source": "std1[2]", "target": "fab1[11]"},
        {"source": "std1[2]", "target": "fab1[16]"},
        {"source": "std1[2]", "target": "fab1[4]"},
        {"source": "std1[2]", "target": "fab1[6]"},
        {"source": "std1[2]", "target": "fab1[2]"},
        {"source": "std1[2]", "target": "fab1[3]"},
        {"source": "std1[2]", "target": "fab1[5]"},
        {"source": "std1[2]", "target": "fab1[12]"},
        {"source": "std1[2]", "target": "fab1[15]"},
        {"source": "std1[1]", "target": "fab1[2]"},
        {"source": "std1[1]", "target": "fab1[4]"},
        {"source": "std1[1]", "target": "fab1[3]"},
        {"source": "std1[3]", "target": "fab1[10]"},
        {"source": "std1[3]", "target": "fab1[9]"},
        {"source": "std1[3]", "target": "fab1[16]"},
        {"source": "std1[3]", "target": "fab1[8]"},
        {"source": "std1[3]", "target": "fab1[18]"},
        {"source": "std1[3]", "target": "fab1[4]"},
        {"source": "std1[3]", "target": "fab1[6]"},
        {"source": "std1[3]", "target": "fab1[13]"},
        {"source": "std1[3]", "target": "fab1[7]"},
        {"source": "std1[3]", "target": "fab1[2]"},
        {"source": "std1[3]", "target": "fab1[3]"},
        {"source": "std1[3]", "target": "fab1[5]"},
        {"source": "std1[3]", "target": "fab1[17]"},
        {"source": "std1[3]", "target": "fab1[14]"},
        {"source": "std1[3]", "target": "fab1[15]"},
        {"source": "dl1[3]", "target": "std1[3]"},
        {"source": "dl1[0]", "target": "std1[0]"},
        {"source": "dl1[2]", "target": "std1[2]"}
    ]
}

See also

Attribute metadata file format in Attribute Metadata File Specification