public TextTransform(IHostEnvironment env, IEnumerable <string> inputColumns, string outputColumn,
Action <Settings> advancedSettings = null)
{
Contracts.CheckValue(env, nameof(env));
_host = env.Register(nameof(TextTransform));
_host.CheckValue(inputColumns, nameof(inputColumns));
_host.CheckParam(inputColumns.Any(), nameof(inputColumns));
_host.CheckParam(!inputColumns.Any(string.IsNullOrWhiteSpace), nameof(inputColumns));
_host.CheckNonEmpty(outputColumn, nameof(outputColumn));
_host.CheckValueOrNull(advancedSettings);
_inputColumns = inputColumns.ToArray();
OutputColumn = outputColumn;
AdvancedSettings = new Settings();
advancedSettings?.Invoke(AdvancedSettings);
_stopWordsRemover = null;
_dictionary = null;
_wordFeatureExtractor = new NgramExtractorTransform.NgramExtractorArguments();
_charFeatureExtractor = new NgramExtractorTransform.NgramExtractorArguments()
{
NgramLength = 3, AllLengths = false
};
}
public TransformApplierParams(TextFeaturizingEstimator parent)
{
var host = parent._host;
host.Check(Enum.IsDefined(typeof(Language), parent.OptionalSettings.Language));
host.Check(Enum.IsDefined(typeof(CaseMode), parent.OptionalSettings.CaseMode));
WordExtractorFactory = parent._wordFeatureExtractor?.CreateComponent(host, parent._dictionary);
CharExtractorFactory = parent._charFeatureExtractor?.CreateComponent(host, parent._dictionary);
Norm = parent.OptionalSettings.Norm;
Language = parent.OptionalSettings.Language;
StopWordsRemover = parent._stopWordsRemover;
TextCase = parent.OptionalSettings.CaseMode;
KeepDiacritics = parent.OptionalSettings.KeepDiacritics;
KeepPunctuations = parent.OptionalSettings.KeepPunctuations;
KeepNumbers = parent.OptionalSettings.KeepNumbers;
OutputTextTokensColumnName = parent.OptionalSettings.OutputTokensColumnName;
Dictionary = parent._dictionary;
}
public TransformApplierParams(TextTransform parent)
{
var host = parent._host;
host.Check(Enum.IsDefined(typeof(Language), parent.AdvancedSettings.TextLanguage));
host.Check(Enum.IsDefined(typeof(CaseNormalizationMode), parent.AdvancedSettings.TextCase));
WordExtractorFactory = parent._wordFeatureExtractor?.CreateComponent(host, parent._dictionary);
CharExtractorFactory = parent._charFeatureExtractor?.CreateComponent(host, parent._dictionary);
VectorNormalizer = parent.AdvancedSettings.VectorNormalizer;
Language = parent.AdvancedSettings.TextLanguage;
StopWordsRemover = parent._stopWordsRemover;
TextCase = parent.AdvancedSettings.TextCase;
KeepDiacritics = parent.AdvancedSettings.KeepDiacritics;
KeepPunctuations = parent.AdvancedSettings.KeepPunctuations;
KeepNumbers = parent.AdvancedSettings.KeepNumbers;
OutputTextTokens = parent.AdvancedSettings.OutputTokens;
Dictionary = parent._dictionary;
}
public TransformApplierParams(IHost host, Arguments args)
{
Contracts.AssertValue(host);
host.CheckUserArg(args.Column != null, nameof(args.Column), "Columns must be specified");
host.CheckUserArg(args.WordFeatureExtractor != null || args.CharFeatureExtractor != null || args.OutputTokens,
nameof(args.WordFeatureExtractor), "At least one feature extractor or OutputTokens must be specified.");
host.Check(Enum.IsDefined(typeof(Language), args.Language));
host.Check(Enum.IsDefined(typeof(CaseNormalizationMode), args.TextCase));
WordExtractorFactory = args.WordFeatureExtractor?.CreateComponent(host, args.Dictionary);
CharExtractorFactory = args.CharFeatureExtractor?.CreateComponent(host, args.Dictionary);
VectorNormalizer = args.VectorNormalizer;
Language = args.Language;
StopWordsRemover = args.StopWordsRemover;
TextCase = args.TextCase;
KeepDiacritics = args.KeepDiacritics;
KeepPunctuations = args.KeepPunctuations;
KeepNumbers = args.KeepNumbers;
OutputTextTokens = args.OutputTokens;
Dictionary = args.Dictionary;
}
internal TextFeaturizingEstimator(IHostEnvironment env, string name, IEnumerable <string> source, Options options = null)
{
Contracts.CheckValue(env, nameof(env));
_host = env.Register(nameof(TextFeaturizingEstimator));
_host.CheckValue(source, nameof(source));
_host.CheckParam(source.Any(), nameof(source));
_host.CheckParam(!source.Any(string.IsNullOrWhiteSpace), nameof(source));
_host.CheckNonEmpty(name, nameof(name));
_host.CheckValueOrNull(options);
_inputColumns = source.ToArray();
OutputColumn = name;
OptionalSettings = new Options();
if (options != null)
{
OptionalSettings = options;
}
_stopWordsRemover = OptionalSettings.StopWordsRemover;
_dictionary = null;
_wordFeatureExtractor = OptionalSettings.WordFeatureExtractorFactory;
_charFeatureExtractor = OptionalSettings.CharFeatureExtractorFactory;
}
