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Analiza opiniones en texto

Inspecciona el texto dado e identifica la opinión emocional predominante.

Páginas de documentación que incluyen esta muestra de código

Para ver la muestra de código usada en contexto, consulta la siguiente documentación:

Muestra de código

C#

        private static void AnalyzeSentimentFromText(string text)
        {
            var client = LanguageServiceClient.Create();
            var response = client.AnalyzeSentiment(new Document()
            {
                Content = text,
                Type = Document.Types.Type.PlainText
            });
            WriteSentiment(response.DocumentSentiment, response.Sentences);
        }

        private static void WriteSentiment(Sentiment sentiment,
            RepeatedField<Sentence> sentences)
        {
            Console.WriteLine("Overall document sentiment:");
            Console.WriteLine($"\tScore: {sentiment.Score}");
            Console.WriteLine($"\tMagnitude: {sentiment.Magnitude}");
            Console.WriteLine("Sentence level sentiment:");
            foreach (var sentence in sentences)
            {
                Console.WriteLine($"\t{sentence.Text.Content}: "
                    + $"({sentence.Sentiment.Score})");
            }
        }

Go


func analyzeSentiment(ctx context.Context, client *language.Client, text string) (*languagepb.AnalyzeSentimentResponse, error) {
	return client.AnalyzeSentiment(ctx, &languagepb.AnalyzeSentimentRequest{
		Document: &languagepb.Document{
			Source: &languagepb.Document_Content{
				Content: text,
			},
			Type: languagepb.Document_PLAIN_TEXT,
		},
	})
}

Java

// Instantiate the Language client com.google.cloud.language.v1.LanguageServiceClient
try (LanguageServiceClient language = LanguageServiceClient.create()) {
  Document doc = Document.newBuilder().setContent(text).setType(Type.PLAIN_TEXT).build();
  AnalyzeSentimentResponse response = language.analyzeSentiment(doc);
  Sentiment sentiment = response.getDocumentSentiment();
  if (sentiment == null) {
    System.out.println("No sentiment found");
  } else {
    System.out.printf("Sentiment magnitude: %.3f\n", sentiment.getMagnitude());
    System.out.printf("Sentiment score: %.3f\n", sentiment.getScore());
  }
  return sentiment;
}

Node.js

// Imports the Google Cloud client library
const language = require('@google-cloud/language');

// Creates a client
const client = new language.LanguageServiceClient();

/**
 * TODO(developer): Uncomment the following line to run this code.
 */
// const text = 'Your text to analyze, e.g. Hello, world!';

// Prepares a document, representing the provided text
const document = {
  content: text,
  type: 'PLAIN_TEXT',
};

// Detects the sentiment of the document
const [result] = await client.analyzeSentiment({document});

const sentiment = result.documentSentiment;
console.log('Document sentiment:');
console.log(`  Score: ${sentiment.score}`);
console.log(`  Magnitude: ${sentiment.magnitude}`);

const sentences = result.sentences;
sentences.forEach(sentence => {
  console.log(`Sentence: ${sentence.text.content}`);
  console.log(`  Score: ${sentence.sentiment.score}`);
  console.log(`  Magnitude: ${sentence.sentiment.magnitude}`);
});

PHP

use Google\Cloud\Language\V1\Document;
use Google\Cloud\Language\V1\Document\Type;
use Google\Cloud\Language\V1\LanguageServiceClient;

/** Uncomment and populate these variables in your code */
// $text = 'The text to analyze.';

$languageServiceClient = new LanguageServiceClient();
try {
    // Create a new Document, add text as content and set type to PLAIN_TEXT
    $document = (new Document())
        ->setContent($text)
        ->setType(Type::PLAIN_TEXT);

    // Call the analyzeSentiment function
    $response = $languageServiceClient->analyzeSentiment($document);
    $document_sentiment = $response->getDocumentSentiment();
    // Print document information
    printf('Document Sentiment:' . PHP_EOL);
    printf('  Magnitude: %s' . PHP_EOL, $document_sentiment->getMagnitude());
    printf('  Score: %s' . PHP_EOL, $document_sentiment->getScore());
    printf(PHP_EOL);
    $sentences = $response->getSentences();
    foreach ($sentences as $sentence) {
        printf('Sentence: %s' . PHP_EOL, $sentence->getText()->getContent());
        printf('Sentence Sentiment:' . PHP_EOL);
        $sentiment = $sentence->getSentiment();
        if ($sentiment) {
            printf('Entity Magnitude: %s' . PHP_EOL, $sentiment->getMagnitude());
            printf('Entity Score: %s' . PHP_EOL, $sentiment->getScore());
        }
        print(PHP_EOL);
    }
} finally {
    $languageServiceClient->close();
}

Python

from google.cloud import language_v1

def sample_analyze_sentiment(text_content):
    """
    Analyzing Sentiment in a String

    Args:
      text_content The text content to analyze
    """

    client = language_v1.LanguageServiceClient()

    # text_content = 'I am so happy and joyful.'

    # Available types: PLAIN_TEXT, HTML
    type_ = language_v1.Document.Type.PLAIN_TEXT

    # Optional. If not specified, the language is automatically detected.
    # For list of supported languages:
    # https://cloud.google.com/natural-language/docs/languages
    language = "en"
    document = {"content": text_content, "type_": type_, "language": language}

    # Available values: NONE, UTF8, UTF16, UTF32
    encoding_type = language_v1.EncodingType.UTF8

    response = client.analyze_sentiment(request = {'document': document, 'encoding_type': encoding_type})
    # Get overall sentiment of the input document
    print(u"Document sentiment score: {}".format(response.document_sentiment.score))
    print(
        u"Document sentiment magnitude: {}".format(
            response.document_sentiment.magnitude
        )
    )
    # Get sentiment for all sentences in the document
    for sentence in response.sentences:
        print(u"Sentence text: {}".format(sentence.text.content))
        print(u"Sentence sentiment score: {}".format(sentence.sentiment.score))
        print(u"Sentence sentiment magnitude: {}".format(sentence.sentiment.magnitude))

    # Get the language of the text, which will be the same as
    # the language specified in the request or, if not specified,
    # the automatically-detected language.
    print(u"Language of the text: {}".format(response.language))

Ruby

# text_content = "Text to run sentiment analysis on"

require "google/cloud/language"

language = Google::Cloud::Language.language_service

document = { content: text_content, type: :PLAIN_TEXT }
response = language.analyze_sentiment document: document

sentiment = response.document_sentiment

puts "Overall document sentiment: (#{sentiment.score})"
puts "Sentence level sentiment:"

sentences = response.sentences

sentences.each do |sentence|
  sentiment = sentence.sentiment
  puts "#{sentence.text.content}: (#{sentiment.score})"
end