Sample_AnalyzeActions.md

Perform multiple text analysis actions

This sample demonstrates how to perform multiple text analysis actions on one or more documents. These actions can include:

• Named Entities Recognition
• PII Entities Recognition
• Linked Entity Recognition
• Key Phrase Extraction
• Sentiment Analysis
• Extractive Summarization
• Custom Named Entity Recognition
• Custom Text Classification

Create a TextAnalyticsClient

To create a new TextAnalyticsClient, you will need the service endpoint and credentials of your Language resource. To authenticate, you can use the DefaultAzureCredential, which combines credentials commonly used to authenticate when deployed on Azure, with credentials used to authenticate in a development environment. In this sample, however, you will use an AzureKeyCredential, which you can create with an API key.

Uri endpoint = new("<endpoint>");
AzureKeyCredential credential = new("<apiKey>");
TextAnalyticsClient client = new(endpoint, credential);

The values of the endpoint and apiKey variables can be retrieved from environment variables, configuration settings, or any other secure approach that works for your application.

Perform multiple actions on one or more text documents

To perform multiple actions on one or more text documents, call AnalyzeActionsAsync on the TextAnalyticsClient by passing the documents as either an IEnumerable<string> parameter or an IEnumerable<TextDocumentInput> parameter. This returns an AnalyzeActionsOperation. Using WaitUntil.Completed means that the long-running operation will be automatically polled until it has completed. You can then view the results of the text analysis actions, including any errors that might have occurred.

    string documentA =
        "We love this trail and make the trip every year. The views are breathtaking and well worth the hike!"
        + " Yesterday was foggy though, so we missed the spectacular views. We tried again today and it was"
        + " amazing. Everyone in my family liked the trail although it was too challenging for the less"
        + " athletic among us.";

    string documentB =
        "Last week we stayed at Hotel Foo to celebrate our anniversary. The staff knew about our anniversary"
        + " so they helped me organize a little surprise for my partner. The room was clean and with the"
        + " decoration I requested. It was perfect!";

    // Prepare the input of the text analysis operation. You can add multiple documents to this list and
    // perform the same operation on all of them simultaneously.
    List<string> batchedDocuments = new()
    {
        documentA,
        documentB
    };

    TextAnalyticsActions actions = new()
    {
        ExtractKeyPhrasesActions = new List<ExtractKeyPhrasesAction>() { new ExtractKeyPhrasesAction() { ActionName = "ExtractKeyPhrasesSample" } },
        RecognizeEntitiesActions = new List<RecognizeEntitiesAction>() { new RecognizeEntitiesAction() { ActionName = "RecognizeEntitiesSample" } },
        DisplayName = "AnalyzeOperationSample"
    };

    // Perform the text analysis operation.
    AnalyzeActionsOperation operation = await client.AnalyzeActionsAsync(WaitUntil.Completed, batchedDocuments, actions);

    // View the operation status.
    Console.WriteLine($"Created On   : {operation.CreatedOn}");
    Console.WriteLine($"Expires On   : {operation.ExpiresOn}");
    Console.WriteLine($"Id           : {operation.Id}");
    Console.WriteLine($"Status       : {operation.Status}");
    Console.WriteLine($"Last Modified: {operation.LastModified}");
    Console.WriteLine();

    if (!string.IsNullOrEmpty(operation.DisplayName))
    {
        Console.WriteLine($"Display name: {operation.DisplayName}");
        Console.WriteLine();
    }

    Console.WriteLine($"Total actions: {operation.ActionsTotal}");
    Console.WriteLine($"  Succeeded actions: {operation.ActionsSucceeded}");
    Console.WriteLine($"  Failed actions: {operation.ActionsFailed}");
    Console.WriteLine($"  In progress actions: {operation.ActionsInProgress}");
    Console.WriteLine();

    await foreach (AnalyzeActionsResult documentsInPage in operation.Value)
    {
        IReadOnlyCollection<ExtractKeyPhrasesActionResult> keyPhrasesResults = documentsInPage.ExtractKeyPhrasesResults;
        IReadOnlyCollection<RecognizeEntitiesActionResult> entitiesResults = documentsInPage.RecognizeEntitiesResults;

        Console.WriteLine("Recognized Entities");
        int docNumber = 1;
        foreach (RecognizeEntitiesActionResult entitiesActionResults in entitiesResults)
        {
            Console.WriteLine($" Action name: {entitiesActionResults.ActionName}");
            Console.WriteLine();
            foreach (RecognizeEntitiesResult documentResult in entitiesActionResults.DocumentsResults)
            {
                Console.WriteLine($" Document #{docNumber++}");
                Console.WriteLine($"  Recognized {documentResult.Entities.Count} entities:");

                foreach (CategorizedEntity entity in documentResult.Entities)
                {
                    Console.WriteLine();
                    Console.WriteLine($"    Entity: {entity.Text}");
                    Console.WriteLine($"    Category: {entity.Category}");
                    Console.WriteLine($"    Offset: {entity.Offset}");
                    Console.WriteLine($"    Length: {entity.Length}");
                    Console.WriteLine($"    ConfidenceScore: {entity.ConfidenceScore}");
                    Console.WriteLine($"    SubCategory: {entity.SubCategory}");
                }
                Console.WriteLine();
            }
        }

        Console.WriteLine("Extracted Key Phrases");
        docNumber = 1;
        foreach (ExtractKeyPhrasesActionResult keyPhrasesActionResult in keyPhrasesResults)
        {
            Console.WriteLine($" Action name: {keyPhrasesActionResult.ActionName}");
            Console.WriteLine();
            foreach (ExtractKeyPhrasesResult documentResults in keyPhrasesActionResult.DocumentsResults)
            {
                Console.WriteLine($" Document #{docNumber++}");
                Console.WriteLine($"  Recognized the following {documentResults.KeyPhrases.Count} Keyphrases:");

                foreach (string keyphrase in documentResults.KeyPhrases)
                {
                    Console.WriteLine($"    {keyphrase}");
                }
                Console.WriteLine();
            }
        }
    }
}

See the README of the Text Analytics client library for more information, including useful links and instructions.