NumberRecognizer Stage

Identifies tokens which look like numbers and flags them with the "NUMBER" flag.

Currently handles the following situations:

• Integers:  0, 1, 100
• Floats:  0.5, 12.2, 3.14159
• Negative:  -1003, -12.2

Does NOT currently recognize:

• Numbers with commas:  1,314,100.3
• Numbers with scientific notation
• Computer literals:  0xBEA1, 07832
• European numbers with commas and periods swapped
• Positive:  +102.3

Operates On:  Lexical Items with TOKEN

Configuration Parameters

• skipFlags (string array, optional) - Flags to be skipped by this stage
  • Tokens marked with this flags will be ignore by this stage, and no process will be performed.
• requireFlags (string array, optional)
  • Tokens need to have all the specified flags, in order to be processed
• debug (boolean, optional)
  • Enable all debug log functionality of the stage, if any.

{
 "type":"NumberRecognizer"
}

Flags

Lex-Item Flags:

• NUMBER - Flagged on all tokens which are numbers according to the rules above.

Vertex Flags:

None.

Example

V----------[1984 42 -10 3.14 ]-----------V  
^--[1984]--V--[42]--V--[-10]--V--[3.14]--^  

Item [1984] - [NUMBER,TOKEN]
Item [42]   - [NUMBER,TOKEN]
Item [-10]  - [NUMBER,TOKEN]
Item [3.14] - [NUMBER,TOKEN]