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Splits text blocks into separate tokens on any number of white space.

Operates On:  Lexical Items with TEXT_BLOCK

Generic Configuration Parameters

  • boundaryFlags ( type=string array | optional ) - List of vertex flags that indicate the beginning and end of a text block.
    Tokens to process must be inside two vertices marked with this flag (e.g ["TEXT_BLOCK_SPLIT"])
  • skipFlags ( type=string array | optional ) - Flags to be skipped by this stage.
    Tokens marked with this flag will be ignored by this stage, and no processing will be performed.
  • requiredFlags ( type=string array | optional ) - Lex items flags required by every token to be processed.
    Tokens need to have all of the specified flags in order to be processed.
  • atLeastOneFlag ( type=string array | optional ) - Lex items flags needed by every token to be processed.
    Tokens will need at least one of the flags specified in this array.
  • confidenceAdjustment ( type=double | default=1 | required ) - Adjustment factor to apply to the confidence value of 0.0 to 2.0 from (Applies for every pattern match).
    • 0.0 to < 1.0  decreases confidence value
    • 1.0 confidence value remains the same
    • > 1.0 to  2.0 increases confidence value
  • debug ( type=boolean | default=false | optional ) - Enable all debug log functionality for the stage, if any.
  • enable ( type=boolean | default=true | optional ) - Indicates if the current stage should be consider for the Pipeline Manager
    • Only applies for automatic pipeline building

Configuration Parameters

NONE


Example Configuration
{
 "type":"WhitespaceTokenizer"
}

Output Flags

Lex-Item Flags:

  • TOKEN - Identifies that the Lex-Items produced by this stage are tokens and not text blocks.
  • ORIGINAL - Identifies that the Lex-Items produced by this stage are the original, as written, representation of every token (e.g. before normalization)
  • HAS_DIGIT - Tokens produced with at least one digit character are tagged as HAS_DIGIT 
  • HAS_PUNCTUATION - Tokens produced with at least one punctuation character are tagged as HAS_PUNCTUATION.

Vertex Flags:

  • ALL_WHITESPACE - Identifies that the characters spanned by the vertex are all whitespace characters (spaces, tabs, new-lines, carriage returns, etc.)

Example

V-----------[This is a sentenceA.]-----------V----------------------[  and this is a sentence with leading whitespace.]----------------------V 
^--[This]--V--[is]--V--[a]--V--[sentenceA.]--^--[and]--V--[this]--V--[is]--V--[a]--V--[sentence]--V--[with]--V--[leading]--V--[whitespace.]--^
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