It is possible to update data previously streamed to the Openlayer platform. It usually happens when:

• The ground truths for the data streamed to the platform were not available during the model inference time, but became available after some time.
• You want to add human feedback associated with a request, but this feedback was not available during model inference time.

This guide shows how to use Openlayer SDKs to update previously published data.

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How to update data

Every row streamed to Openlayer has an inference_id — a unique identifier of the row. You can provide the inference_id during stream time, and if you don’t, Openlayer will assign unique IDs to your rows.

You must use the inference_id to specify the rows you want to update.

Let’s say that you want to add a column called label with ground truths. If you have your data in a pandas DataFrame similar to:

>>> df
            inference_id  label
0             d56d2b2c      0
1             3b0b2521      1
2             8c294a3a      0

First, you need to retrieve the inference pipeline object with:

import openlayer

client = openlayer.OpenlayerClient("YOUR_API_KEY_HERE")

project = client.load_project(name="Churn prediction")

inference_pipeline = project.load_inference_pipeline(
    name="production",
)

Then, you can update the data specified by the inference IDs with:

inference_pipeline.update_data(
    df=df,
    inference_id_column_name='inference_id',
    ground_truth_column_name='label',
)