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Merge pull request #533 from iamrk04/patch-1
Update forecasting documentation
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articles/machine-learning/concept-automl-forecasting-evaluation.md

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ms.topic: conceptual
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ms.date: 09/05/2024
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ms.date: 10/03/2024
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#customer intent: As a data scientist, I want to understand model inference and evaluation in forecasting tasks.
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# Inference and evaluation of forecasting models (preview)
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[!INCLUDE [machine-learning-preview-generic-disclaimer](./includes/machine-learning-preview-generic-disclaimer.md)]
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# Inference and evaluation of forecasting models
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This article introduces concepts related to model inference and evaluation in forecasting tasks. For instructions and examples for training forecasting models in AutoML, see [Set up AutoML to train a time-series forecasting model with SDK and CLI](./how-to-auto-train-forecast.md).
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articles/machine-learning/how-to-auto-train-forecast.md

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#customer intent: As a data scientist, I want to train time-series forecasting models and understand the options available for training them by using AutoML.
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## Orchestrate training, inference, and evaluation with components and pipelines
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Your ML workflow likely requires more than just training. Inference, or retrieving model predictions on newer data, and evaluation of model accuracy on a test set with known target values are other common tasks that you can orchestrate in Azure Machine Learning along with training jobs. To support inference and evaluation tasks, Azure Machine Learning provides [components](concept-component.md), which are self-contained pieces of code that do one step in an Azure Machine Learning [pipeline](concept-ml-pipelines.md).
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# [Python SDK](#tab/python)
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## Forecast at scale: many models
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The many models components in AutoML enable you to train and manage millions of models in parallel. For more information on many models concepts, see [Many models](concept-automl-forecasting-at-scale.md#many-models).
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### Many models training configuration
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> [!NOTE]
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> The many models training and inference components conditionally partition your data according to the `partition_column_names` setting so that each partition is in its own file. This process can be very slow or fail when data is very large. In this case, we recommend partitioning your data manually before running many models training or inference.
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> [!NOTE]
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> The default parallelism limit for a many models run within a subscription is set to 320. If your workload requires a higher limit, please don't hesitate to reach out to us.
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<a name="forecasting-at-scale-hierarchical-time-series"></a>
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## Forecast at scale: hierarchical time series
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The hierarchical time series (HTS) components in AutoML enable you to train a large number of models on data with hierarchical structure. For more information, see the [HTS article section](concept-automl-forecasting-at-scale.md#hierarchical-time-series-forecasting).
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### HTS training configuration
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> The HTS training and inference components conditionally partition your data according to the `hierarchy_column_names` setting so that each partition is in its own file. This process can be very slow or fail when data is very large. In this case, we recommend partitioning your data manually before running HTS training or inference.
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> [!NOTE]
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> The default parallelism limit for a hierarchical time series run within a subscription is set to 320. If your workload requires a higher limit, please don't hesitate to reach out to us.
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## Forecast at scale: distributed DNN training
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- To learn how distributed training works for forecasting tasks, see [Distributed DNN training](concept-automl-forecasting-at-scale.md#distributed-dnn-training-preview).

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