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Identifies tokens that look like dates or time indicators and flags them with the "DATE" flag.

Operates On:  Lexical Items with TOKEN

Currently handles the following situations:

  • Month and Day only: Jan 25, January 25

  • Month, Day and Year: Jan 25 2019, January 25 2019

  • Month and Year only: Jan 2019, January 2019

  • YYYYMMDD Format: 20190125

  • MMDDYYYY Format: 01252019

  • Using separators too: 2019-01-25, 2019/1/25, 01/25/2019, 2019/01/2

  • Dates with Time: 2019-01-25T10:25

  • Dates with Time wihout separators: 20190125T102500

  • Using the 'Z' character at the end: 2019-01-25T10:25:10Z

  • Using AM or PM for the time: 2019-01-25T10:25:10AM, 2019-01-25T10:25:10pm

  • Using 24hr format: 2019-01-25T14:25:10Z

  • The time only: 01:59:59PM, 01:59:59am


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


Flags

Lex-Item Flags

  • DATE_TIME - Identifies the token as a date or time indicator.
  • SEMANTIC_TAG - Identifies all lexical items which are semantic tags.

Example

V-----[2016-06-06T15:30:30Z] started.-----V 
^-[2016-06-06T15:30:30Z]-V---[started.]---^ 
^------[{datetime}]------^ 

Item [2016-06-06T15:30:30Z] - [ORIGINAL,HAS_DIGIT,TOKEN,HAS_PUNCTUATION]
Item [started.] - [ORIGINAL,TOKEN,HAS_PUNCTUATION]
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