<p>Creates a SageMaker <i>experiment</i>. An experiment is a collection of <i>trials</i> that are observed, compared and evaluated as a group. A trial is a set of steps, called <i>trial components</i>, that produce a machine learning model.</p> <note> <p>In the Studio UI, trials are referred to as <i>run groups</i> and trial components are referred to as <i>runs</i>.</p> </note> <p>The goal of an experiment is to determine the components that produce the best model. Multiple trials are performed, each one isolating and measuring the impact of a change to one or more inputs, while keeping the remaining inputs constant.</p> <p>When you use SageMaker Studio or the SageMaker Python SDK, all experiments, trials, and trial components are automatically tracked, logged, and indexed. When you use the Amazon Web Services SDK for Python (Boto), you must use the logging APIs provided by the SDK.</p> <p>You can add tags to experiments, trials, trial components and then use the <a href="https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_Search.html">Search</a> API to search for the tags.</p> <p>To add a description to an experiment, specify the optional <code>Description</code> parameter. To add a description later, or to change the description, call the <a href="https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_UpdateExperiment.html">UpdateExperiment</a> API.</p> <p>To get a list of all your experiments, call the <a href="https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_ListExperiments.html">ListExperiments</a> API. To view an experiment's properties, call the <a href="https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_DescribeExperiment.html">DescribeExperiment</a> API. To get a list of all the trials associated with an experiment, call the <a href="https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_ListTrials.html">ListTrials</a> API. To create a trial call the <a href="https://docs.aws.amazon.com/sagemaker/latest/APIReference/API_CreateTrial.html">CreateTrial</a> API.</p>

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