Outputs

This section summarizes the mathematical outputs of TIM Detect with a drift approach. Note that this approach does not return accuracies in the outputs because there is no target or label to refer to.

CSV result (table)

build-model, detect.

column_name	js_divergence	drift
Temperature	0.099	false
Pressure	0.175	true
Speed	0.161	false

Column name

The column_name represents the name of the column from dataset that corresponds to the given row of drift outputs.

Jensen-Shannon divergence

The distance is Jensen-Shannon statics computed between reference and test data of given column.

Drift

The drift column contains boolean values indicating whether there is drift between reference and test data for given column.

API Model

Model version

The version of model. Each approach has its own version.

"modelVersion": "5.0"

Approach

The approach used to build the model.

"approach": "drift"

Algorithm

Algorithm which was used to build the model.

"algorithm": "jensen-shannon"

Model

The model for drift contains only settings and parameters, there is no actual model, the empirical distribution of reference data is always calculated from data.

Settings

Stored settings which were used to build the model and are important to execute detection correctly. There are three of them:

• reference rows - rows which should be used as reference data. Reference rows are always stored as an array of "from", "to" ranges even if they were entered relatively.
• columns - array of variable names for which the drift detection is performed
• threshold - the thresholding value of Jensen-Shannon divergence

"settings": {
    "referenceRows": [
        {
            "to": "2022-06-16T00:00:00.000Z",
            "from": "2022-01-01T00:00:00.000Z"
        }
    ],
    "columns": [
        "variable1",
        "variable2"
    ],
    "threshold": 0.05
}

Parameters

Parameters describe the data properties for which the model was built. There are two of them:

• sampling period - the time scale given by user, if not given the estimated sampling period of the data. The sampling period used when building the model is stored in the ISO 8601 duration format.
• time zone - the time zone given by dataset

"parameters": {
    "samplingPeriod": "P1D",
    "timeZone": "UTC"
}

Signature

The signature serves to verify model originality.

"signature": "395b068eb6747efe4f9eb78"