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Splits tokens on specified characters, typically punctuation. Multiple split characters in a row will create a single split (not multiple splits).
Operates On: Lexical Items with TOKEN
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
- splitChars (string, optional) - List of characters which should be used to split tokens.
- If not present, then tokens are split on any sequence of punctuation.
- dontSplitChars (string, optional) - List of characters which will NOT be used to split tokens.
- This is typically used to identify exceptions (characters which are not used to split tokens) when splitChars is missing.
- These characters are included in the produced tokens.
- splitFlag (string, optional) - The flag to be put on the vertex between the two tokens.
- If missing, defaults to ALL_PUNCTUATION.
Examples
{
"type":"CharacterSplitter",
"dontSplitChars":"."
}
Splits on all punctuation, except periods.
For example, the token: "SagaToolkit-1.0" will produce the following graph:
V-------[SagaToolkit-1.0]-------V
^---[SagaToolkit]--V--[1.0]----^
{
"type":"CharacterSplitter",
"splitChars":"-",
"splitFlag":"DASH_SPLIT"
}
(splits tokens dashes)
Output Flags
Lex-Item Flags:
- TOKEN - All tokens produced are tagged as TOKEN
Vertex Flags:
- ALL_PUNCTUATION - Identifies the vertex as all token
- The default flag if no "splitFlag" is present.
- <splitFlag> - Defines an alternative flag to ALL_PUNCTUATION, if desired (see above)
Example
With Defaults
V-----[Abe-Lincoln]-----V--[likes]--V--[the]--V-----[iPhone-*&@#*&7.0]-----V
^--[Abe]--V--[Lincoln]--^ ^--[iPhone]--V--[7]--V--[0]--^
With Don't Split Param
{
"type":"CharacterSplitter",
"dontSplitChars": "."
}
V-----[Abe-Lincoln]-----V--[likes]--V--[the]--V--[iPhone-*&@#*&7.0]--V
^--[Abe]--V--[Lincoln]--^ ^--[iPhone]--V--[7.0]--^
With Split Chars Param
{
"type":"CharacterSplitter",
"splitChars": "-#."
"dontSplitChars": "."
}
V-----[Abe-Lincoln]-----V--[likes]--V--[the]--V--------[iPhone-*&@#*&7.0]--------V
^--[Abe]--V--[Lincoln]--^ ^--[iPhone]--V--[*&@]--V--[*&7.0]--^