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Apr 20, 2019
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Stopwords remover xml documentation #3413

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ea847a9
Update documentation for stopwords
Apr 18, 2019
eb72063
Merge branch 'master' into Ivanidze/StopWordsRemoverXmlDocumentation
Apr 18, 2019
7e1016c
string to text
Apr 18, 2019
818ec4a
address comments
Apr 19, 2019
a8049d9
address comments
Apr 19, 2019
f3f9003
ReadOnly to TextDataViewType
Apr 19, 2019
5c5fc26
address comments
Apr 19, 2019
abff8d4
small update for types
Apr 19, 2019
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51 changes: 38 additions & 13 deletions src/Microsoft.ML.Transforms/Text/StopWordsRemovingTransformer.cs
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Expand Up @@ -61,10 +61,7 @@ public ITransformer CreateComponent(IHostEnvironment env, IDataView input, OneTo
}

/// <summary>
/// A Stopword remover transform based on language-specific lists of stop words (most common words)
/// from Office Named Entity Recognition project.
/// The transform is usually applied after tokenizing text, so it compares individual tokens
/// (case-insensitive comparison) to the stopwords.
/// <see cref="ITransformer"/> resulting from fitting a <see cref="StopWordsRemovingEstimator"/>.
/// </summary>
public sealed class StopWordsRemovingTransformer : OneToOneTransformerBase
{
Expand Down Expand Up @@ -483,10 +480,25 @@ private protected override Func<int, bool> GetDependenciesCore(Func<int, bool> a
}

/// <summary>
/// Stopword remover removes language-specific list of stop words (most common words)
/// This is usually applied after tokenizing text, so it compares individual tokens
/// (case-insensitive comparison) to the stopwords.
/// <see cref="IEstimator{TTransformer}"/> for the <see cref="CustomStopWordsRemovingTransformer"/>.
/// </summary>
/// <remarks>
/// <format type="text/markdown"><![CDATA[
/// ### Estimator Characteristics
/// | | |
/// | -- | -- |
/// | Does this estimator need to look at the data to train its parameters? | No |
/// | Input column data type | Vector of [Text](<xref:Microsoft.ML.Data.TextDataViewType>) |
/// | Output column data type | Unknown-sized vector of [Text](<xref:Microsoft.ML.Data.TextDataViewType>) |
///
/// The resulting <xref:Microsoft.ML.Transforms.Text.StopWordsRemovingTransformer/> creates a new column, named as specified in the output column name parameters, and
/// fills it with vector of words similar to vector of words in input column but removing all, predefined for certain language, texts from it.
/// All text comparison made by casting predefined text and text from input column to lower case using casing rules of invariant culture.
/// See the See Also section for links to examples of the usage.
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@natke natke Apr 19, 2019 •
edited by Ivanidzo4ka
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Suggest: The resulting xref:Microsoft.ML.Transforms.Text.StopWordsRemovingTransformer/ creates a new column, named as specified in the output column name parameter, and fills it with a vector of words containing all of the words in the input column **except the predefined list of stopwords for the specified language. #Resolved

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Looks good! Small type: extra ** in there

/// ]]>
/// </format>
/// </remarks>
/// <seealso cref="TextCatalog.RemoveDefaultStopWords(TransformsCatalog.TextTransforms, string, string, Language)" />
public sealed class StopWordsRemovingEstimator : TrivialEstimator<StopWordsRemovingTransformer>
{
/// <summary>
Expand Down Expand Up @@ -627,9 +639,7 @@ public override SchemaShape GetOutputSchema(SchemaShape inputSchema)
}

/// <summary>
/// Custom stopword remover removes specified list of stop words.
/// This is usually applied after tokenizing text, so it compares individual tokens
/// (case-insensitive comparison) to the stopwords.
/// <see cref="ITransformer"/> resulting from fitting a <see cref="CustomStopWordsRemovingEstimator"/>.
/// </summary>
public sealed class CustomStopWordsRemovingTransformer : OneToOneTransformerBase
{
Expand Down Expand Up @@ -1076,10 +1086,25 @@ protected override Delegate MakeGetter(DataViewRow input, int iinfo, Func<int, b
}

/// <summary>
/// Custom stopword remover removes specified list of stop words.
/// This is usually applied after tokenizing text, so it compares individual tokens
/// (case-insensitive comparison) to the stopwords.
/// <see cref="IEstimator{TTransformer}"/> for the <see cref="CustomStopWordsRemovingTransformer"/>.
/// </summary>
/// <remarks>
/// <format type="text/markdown"><![CDATA[
/// ### Estimator Characteristics
/// | | |
/// | -- | -- |
/// | Does this estimator need to look at the data to train its parameters? | No |
/// | Input column data type | Vector of [Text](<xref:Microsoft.ML.Data.TextDataViewType>) |
/// | Output column data type | Unknown-sized vector of [Text](<xref:Microsoft.ML.Data.TextDataViewType>) |
///
/// The resulting <xref:Microsoft.ML.Transforms.Text.CustomStopWordsRemovingTransformer/> creates a new column, named as specified in the output column name parameters, and
/// fills it with vector of texts similar to vector of words in input column but removing all provided by user words from it.
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@natke natke Apr 19, 2019 •
edited by Ivanidzo4ka
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Suggest: The resulting xref:Microsoft.ML.Transforms.Text.CustomStopWordsRemovingTransformer/ creates a new column, named as specified by the output column name parameter, and
fills it with a vector of words containing all of the words in the input column except those given by the stopwords parameter. #Resolved

/// All text comparison made by casting provided words and words from input column to lower case using casing rules of invariant culture.
/// See the See Also section for links to examples of the usage.
/// ]]>
/// </format>
/// </remarks>
/// <seealso cref="TextCatalog.RemoveStopWords(TransformsCatalog.TextTransforms, string, string, string[])" />
public sealed class CustomStopWordsRemovingEstimator : TrivialEstimator<CustomStopWordsRemovingTransformer>
{
/// <summary>
Expand Down
24 changes: 14 additions & 10 deletions src/Microsoft.ML.Transforms/Text/TextCatalog.cs
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Expand Up @@ -251,12 +251,14 @@ internal static NgramExtractingEstimator ProduceNgrams(this TransformsCatalog.Te
=> new NgramExtractingEstimator(Contracts.CheckRef(catalog, nameof(catalog)).GetEnvironment(), columns);

/// <summary>
/// Removes stop words from incoming token streams in <paramref name="inputColumnName"/>
/// and outputs the token streams without stopwords as <paramref name="outputColumnName"/>.
/// Create a <see cref="CustomStopWordsRemovingEstimator"/>, which copies the data from the column specified in <paramref name="inputColumnName"/>
/// to a new column: <paramref name="outputColumnName"/> and removes predifined set of text specific for <paramref name="language"/> from it.
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specific for [](start = 100, length = 40)

for later: we should that these language-specific lists to docs.

/// </summary>
/// <param name="catalog">The text-related transform's catalog.</param>
/// <param name="outputColumnName">The column containing output text. Null means <paramref name="inputColumnName"/> is replaced.</param>
/// <param name="inputColumnName">The column containing text to remove stop words on.</param>
/// <param name="catalog">The transform's catalog.</param>
/// <param name="outputColumnName">Name of the column resulting from the transformation of <paramref name="inputColumnName"/>.
/// This column's data type will be unknown-size vector of text.</param>
/// <param name="inputColumnName">Name of the column to copy the data from.
/// This estimator operates over vector of text.</param>
/// <param name="language">Langauge of the input text column <paramref name="inputColumnName"/>.</param>
/// <example>
/// <format type="text/markdown">
Expand All @@ -272,12 +274,14 @@ public static StopWordsRemovingEstimator RemoveDefaultStopWords(this TransformsC
=> new StopWordsRemovingEstimator(Contracts.CheckRef(catalog, nameof(catalog)).GetEnvironment(), outputColumnName, inputColumnName, language);

/// <summary>
/// Removes stop words from incoming token streams in <paramref name="inputColumnName"/>
/// and outputs the token streams without stopwords as <paramref name="outputColumnName"/>.
/// Create a <see cref="CustomStopWordsRemovingEstimator"/>, which copies the data from the column specified in <paramref name="inputColumnName"/>
/// to a new column: <paramref name="outputColumnName"/> and removes text specified in <paramref name="stopwords"/> from it.
/// </summary>
/// <param name="catalog">The text-related transform's catalog.</param>
/// <param name="outputColumnName">The column containing output text. Null means <paramref name="inputColumnName"/> is replaced.</param>
/// <param name="inputColumnName">The column containing text to remove stop words on.</param>
/// <param name="catalog">The transform's catalog.</param>
/// <param name="outputColumnName">Name of the column resulting from the transformation of <paramref name="inputColumnName"/>.
/// This column's data type will be unknown-size vector of text.</param>
/// <param name="inputColumnName">Name of the column to copy the data from.
/// This estimator operates over vector of text.</param>
/// <param name="stopwords">Array of words to remove.</param>
/// <example>
/// <format type="text/markdown">
Expand Down