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Flag tokens matched to stop words, to be skipped for following stages

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

  • caseInsensitive (string, optional) - If true, all stop words and tokens will be process as case insensitive (default = true)

  • stopWords (string, optional) - The resource containing the list of stop words

    • See below for the format. if no resource is provided the stage will use the default list of stop words


Default list of stop words

a, an, and, are, as, at, be, but, by, for, if, in, into, is, it, no, not, of, on, or, such, that, the, their, then, there, these, they, this, to, was, will, with

Example Configuration
{
  "type": "StopWordsStage",
  "caseInsensitive" : true,
  "stopWords" : "words-provider:stop_words"
}


Example Output

V--------------[A test to be skipped]--------------V  
  ^--[A]--V--[test]--V--[to]--V--[be]--V--[skipped]--^  
  ^--[a]--^  

Item [A] - [TOKEN, SKIP]
Item [to] - [TOKEN, SKIP]
Item [be] - [TOKEN, SKIP]
Item [a] - [TOKEN, SKIP]

Output Flags

Lex-Item Flags:

  • SKIP - All matched stop words will be marked as SKIP

Resource Data

The resource data will be a json file with an array of words in a field named stopWrods

{
  "stopWords": ["a", "about", "above", "after", "again", "all", "am", "an", "and", "the", "i", "who", ...]
}
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