Character Change Splitter Stage

Separates tokens based on character changes from lowercase-uppercase, letter-number, alphanumeric-punctuation.Without taking any character in the vertex, and respecting the capital letter

Operates On: Lexical Items with TOKEN flag

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

case (boolean, optional) - If true, all tokens are separated on a case change (default = true)
number (boolean, optional) - If true, all tokens are separated on a letter-number. (default = true)
punctuation (boolean, optional) - If true, all tokens are separated on an alphanumeric-punctuation. (default = true)

Example Configuration

{
  	"type":"CharChangeSplitter",
  	"case": true,
	"number": true,
	"punctuation": true
}

Output Flags

Note that flags are placed on every token as appropriate to the current token:

If the token is "President" then that token will have the TITLE_CASE flag.
If a new lower-case normalized interpretation, "president" is added as an alternative, this alternative will have the "ALL_LOWER_CASE" flag.

Lex-Item Flags:

TOKEN - All tokens produced are tagged as TOKEN
ALL_PUNCTUATION - Tokens processed or produced composed only of punctuation characters are tagged as ALL_PUNCTUATION
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. (ALL_PUNCTUATION will not be tagged as HAS_PUNCTUATION)

Vertex Flags:

CHAR_CHANGE - Identifies the vertex as a change between character formats

Example

With Defaults

V--[Issues]--V--[with]--V------------[SagaToken123@#$]-------------V--[send]--V--[email]--V--[to]--V-------------------[[email protected]]--------------------V--[for]--V--[HELP]--V
                        ^--[Saga]--V--[Token]--V--[123]--V--[@#$]--^                               ^--[it]--V--[@]--V--[this]--V--[Company]--V--[.]--V--[com]--^

Without Punctuation Separation

{
	"type":"CharChangeSplitter",
	"punctuation" : false
}

V--[Issues]--V--[with]--V---------[SagaToken123@#$]---------V--[send]--V--[email]--V--[to]--V-----[[email protected]]------V--[for]--V--[HELP]--V
                        ^--[Saga]--V--[Token]--V--[123@#$]--^                               ^--[it@this]--V--[Company.com]--^

Without Number Separation

{
	"type":"CharChangeSplitter",
	"number" : false
}

V--[Issues]--V--[with]--V---------[SagaToken123@#$]---------V--[send]--V--[email]--V--[to]--V-------------------[[email protected]]--------------------V--[for]--V--[HELP]--V
                        ^--[Saga]--V--[Token123]--V--[@#$]--^                               ^--[it]--V--[@]--V--[this]--V--[Company]--V--[.]--V--[com]--^

Without Case Separation

{
	"type":"CharChangeSplitter",
	"case" : false
}

V--[Issues]--V--[with]--V---------[SagaToken123@#$]---------V--[send]--V--[email]--V--[to]--V----------------[[email protected]]----------------V--[for]--V--[HELP]--V
                        ^--[SagaToken]--V--[123]--V--[@#$]--^                               ^--[it]--V--[@]--V--[thisCompany]--V--[.]--V--[com]--^

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