Filter tokens by their length size, setting a minimum and/or maximum limit. Can also replace the token tag by a new one.

Operates On:  Lexical Items with TOKEN and possibly other flags as specified below.

Stage is a Recognizer for Saga Solution, and can also be used as part of a manual pipeline or a base pipeline


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

  • Filter Tokens With Length Higher Than ( type=boolean | default=true | optional ) - Minimum length number for tokens. Can work with “Filter Tokens With Length Lower Than” option to create a range of lengths filtered.
  • Filter Tokens With Length Lower Than ( type=boolean | default=false | optional ) - Maximum length number for tokens. Can work with “Filter Tokens With Length Higher Than” option to create a range of lengths filtered.
  • Tag Filtered Token with ( type=boolean | default=false | optional ) - Replace token tag with a new one if the length of the token is accepted by the filter.
  • Stop Pipeline Process On Filtered ( type=boolean | default=false | optional ) - Stop processing tokens filtered.


"boundaryFlags": [],
"debug": false,
"tagText": false,
"tagName": "filtered",
"filterMin": false,
"minChars": 0,
"atLeastOneFlag": [],
"confidenceAdjustment": 1,
"requiredFlags": [],
"haltProcessing": true,
"maxChars": 100,
"filterMax": true,
"skipFlags": []

Example Output

Filters by a minimum length of 10 (with option set to 10 instead of 100 and replacing token checked).

For example, the token:  "ThisTokenIsLong" will produce the following graph:

V-------[ThisTokenIsLong]-------V
^---------[{filtered}]----------^

Output Flags

Lex-Item Flags:

  • FILTERED - All tokens produced are tagged as FILTERED.

Vertex Flags:

No vertices are created in this stage