Examples with Classifier com.ibm.watson.developer_cloud.visual_recognition.v3.model.Classifier used on opensource projects

Example 21 with Classifier

use of com.ibm.watson.developer_cloud.visual_recognition.v3.model.Classifier in project java-sdk by watson-developer-cloud.

the class VisualRecognition method createClassifier.

/**
 * Create a classifier.
 *
 * Train a new multi-faceted classifier on the uploaded image data. Create your custom classifier with positive or
 * negative examples. Include at least two sets of examples, either two positive example files or one positive and one
 * negative file. You can upload a maximum of 256 MB per call. Encode all names in UTF-8 if they contain non-ASCII
 * characters (.zip and image file names, and classifier and class names). The service assumes UTF-8 encoding if it
 * encounters non-ASCII characters.
 *
 * @param createClassifierOptions the {@link CreateClassifierOptions} containing the options for the call
 * @return a {@link ServiceCall} with a response type of {@link Classifier}
 */
public ServiceCall<Classifier> createClassifier(CreateClassifierOptions createClassifierOptions) {
    Validator.notNull(createClassifierOptions, "createClassifierOptions cannot be null");
    String[] pathSegments = { "v3/classifiers" };
    RequestBuilder builder = RequestBuilder.post(RequestBuilder.constructHttpUrl(getEndPoint(), pathSegments));
    builder.query(VERSION, versionDate);
    MultipartBody.Builder multipartBuilder = new MultipartBody.Builder();
    multipartBuilder.setType(MultipartBody.FORM);
    multipartBuilder.addFormDataPart("name", createClassifierOptions.name());
    // Classes
    for (String className : createClassifierOptions.classNames()) {
        String dataName = className + "_positive_examples";
        File positiveExamples = createClassifierOptions.positiveExamplesByClassName(className);
        RequestBody body = RequestUtils.fileBody(positiveExamples, "application/octet-stream");
        multipartBuilder.addFormDataPart(dataName, positiveExamples.getName(), body);
    }
    if (createClassifierOptions.negativeExamples() != null) {
        RequestBody negativeExamplesBody = RequestUtils.inputStreamBody(createClassifierOptions.negativeExamples(), "application/octet-stream");
        multipartBuilder.addFormDataPart("negative_examples", createClassifierOptions.negativeExamplesFilename(), negativeExamplesBody);
    }
    builder.body(multipartBuilder.build());
    return createServiceCall(builder.build(), ResponseConverterUtils.getObject(Classifier.class));
}