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Class AstTermExtractionNode

The Term Extraction transformation extracts terms from input text columns and directs the terms to output text columns.

Namespace:
Varigence.Languages.Biml.Transformation
Assembly:
Biml.dll
C#
    public class AstTermExtractionNode : AstSingleInTransformationNode, IBindableItem, IVulcanCollectionParent, IVulcanNotifyPropertyChanged, IPropertyChangeNotificationTarget, IGetJsonProvider, INamedNode, IScopeBoundary, IReferenceableItem, IFrameworkItem, INotifyPropertyChanged, IXObjectMappingProvider, IValidationInfo, IDataErrorInfo, INamedItem, IScopedNameIndexable, IDataflowItem
    
  
Inheritance
System.Object
AstNode
AstNamedNode
AstScopeBoundaryNode
AstTransformationNode
AstSingleInTransformationNode
AstTermExtractionNode
Derived
AstTermExtractionNode
Implements

IBindableItem, Varigence.Utility.Collections.IVulcanCollectionParent, Varigence.Utility.ComponentModel.IVulcanNotifyPropertyChanged, Varigence.Utility.ComponentModel.IPropertyChangeNotificationTarget, IGetJsonProvider, INamedNode, IScopeBoundary, IReferenceableItem, IFrameworkItem, System.ComponentModel.INotifyPropertyChanged, Varigence.Utility.Xml.IXObjectMappingProvider, IValidationInfo, System.ComponentModel.IDataErrorInfo, INamedItem, Varigence.Utility.Collections.IScopedNameIndexable, IDataflowItem,

Constructors

AstTermExtractionNode(IFrameworkItem)

Initializes a new instance of the AstTermExtractionNode class with the specified parent node.

Properties

CaseSensitiveTermExtraction

This value specifies whether the Term Extraction process is case sensitive. The default value is False.

CaseSensitiveTermExtractionDefaultValue

Gets the default value for the CaseSensitiveTermExtraction property

ErrorPath

Gets the error output path for this transformation

ExclusionTableConnection

This value specifies the name of the OLE DB connection that is used to connect to the exclusion term table.

ExclusionTermColumn

This values specifies which column contains terms that are skipped during the processing of extracting terms from the data source.

FriendlyTypeName

Gets the friendly name of the type of this node

FriendlyTypeNameStatic

Gets the friendly name of the type of this node

OutputPath

Gets the output path for this transformation. This is the preferred output path and will automatically connect to any single-input transformation nodes that directly follow it in the Biml file.

ScoreOutputColumn

This value specifies the name of the dataflow column to use for the score output. The default value is "Score".

ScoreOutputColumnDefaultValue

Gets the default value for the ScoreOutputColumn property

ScoreType

This value specifies what kind of score is associated with an extracted term. The default value is that the frequency of a term is used as the score.

ScoreTypeDefaultValue

Gets the default value for the ScoreType property

TermExtractionColumn

This value specifies the name of the term extraction column.

TermExtractionColumnDefaultValue

Gets the default value for the TermExtractionColumn property

TermFrequencyThreshold

Specifies the frequency threshold above which a term is extracted.

TermFrequencyThresholdDefaultValue

Gets the default value for the TermFrequencyThreshold property

TermMaxLength

This value specifies the maximum number of words allowed in a term. The default value is 12.

TermMaxLengthDefaultValue

Gets the default value for the TermMaxLength property

TermOutputColumn

This value specifies the name of the dataflow column to use for the term output. The default value is "Term".

TermOutputColumnDefaultValue

Gets the default value for the TermOutputColumn property

TermType

This value specifies the type of terms to extract. The default value is that noun and noun phrases are extracted.

TermTypeDefaultValue

Gets the default value for the TermType property

Methods

BindingScopeBoundaries()

Retrieves the permitted scope boundaries to bind references from this node.

BindReference(SymbolTable, String, Boolean, String, Int32, Boolean)
CopyFrom(IFrameworkItem, UnboundReferences)

Instructs the node to copy property values from the supplied node into itself. This method should only be used by the internal Biml framework.

DefinedAstNodes()

Retrieves a collection of nodes that have been defined as direct children of the current node.

Duplicate()

Creates a duplicate of the current node

Duplicate(Dictionary<IFrameworkItem, IFrameworkItem>)

Creates a duplicate of the current node with the scoped node mapping

Duplicate(IFrameworkItem)

Creates a duplicate of the current node with the specified parent item

Duplicate(IFrameworkItem, Dictionary<IFrameworkItem, IFrameworkItem>)

Creates a duplicate of the current node with the specified parent item and scoped node mapping

DuplicateHusk(IFrameworkItem)

Creates an empty object into which the values from the current node will be duplicated. This method should only be used by the internal Biml framework

DuplicateInto(IFrameworkItem, Dictionary<IFrameworkItem, IFrameworkItem>)

Copies the values from the current node into a husk object with the specified scoped node mapping. This method should only be used by the internal Biml framework

EmitXmlForAction(AstEnginePropertyAction)

Instructs the node to make changes to its underlying Biml code that correspond to the provided action. This method should only be used by the internal Biml framework.

EmitXmlForProperty(String, Int32)

Instructs the node to make changes to its underlying Biml code that correspond to the provided property and index. This method should only be used by the internal Biml framework.

ForceNull(String, Int32)

Internal method used by the compiler to make a propert value null when required by the binding framework.

GetAllItemsReferencedByDefinedSuccessors()

Builds a list of all items referenced by this node and its successors. Each tuple in the returned list represents a FrameworkItemReference. The first item is the ReferencingItem, the second item is the property name, and the third item is the ReferencedItem.

GetBimlAttributeFragment(CulturedStringBuilder)
GetBimlChildFragment(CulturedStringBuilder, Int32)
GetBimlFragment(CulturedStringBuilder, Int32, Boolean)

Internal method used by the Biml engine to produce the XML code for the current object.

GetDefaultValue(String)

Retrieves the default value for the property with the name propertyName

GetDefaultValue<T>(String)

Retrieves the default value for the property with the name propertyName

GetJson(StringBuilder, ref Boolean, Boolean, Boolean, Boolean, Boolean, Boolean, Boolean, Boolean)

Generates a JavaScript Object Notation (JSON) representation of the current node

GetPotentialParentProperties()

Retrieves the reflection information for related properties of this node type.

GetPropertyValue(String)

Retrieves the current value for the property with the name propertyName

GetReflectionInfoFromXmlParsePath(String)

Retrieves the reflection information corresponding to the Xml parse path beginning at this node.

HasAnyBimlChildNodes()
MergeFrom(IFrameworkItem, UnboundReferences, Boolean)

Instructs the node to merge property values from the supplied node into itself. This method should only be used by the internal Biml framework.

ParseAttribute(XAttribute, ParserContext)
ParseChild(XElement, ParserContext)
StructureEquals(Object)

Compares this node to the provided object to determine if all defined children and references are equal.

Validate(ValidationReporter)

Retrieves a collection of validation and diagnostic messages for the current node.

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