Excerpt |
---|
Looks up matches to regular expressions in a dictionary across multiple tokens and then tags the match with one or more semantic tags as an alternative representation. For a simple regex expression , where a match only needs to occur against a singe token. , the Simple Regex Stage is recommended. |
Operates On: Lexical Items with TOKEN flagand possibly other flags as specified below.
Note |
---|
All possibilities are tagged (including overlaps and sub-patterns) with the expectation that later disambiguation stages will choose which tags are the correct interpretation. |
...
Include Page |
---|
| Generic Configuration Parameters |
---|
| Generic Configuration Parameters |
---|
|
Configuration Parameters
- patterns (string, required) -
The resource that contains the pattern database. | name | patterns |
---|
|
- See below for the format.
- maxLength (integer, optional) -
The max length of text to test for regex. |
|
The default The default is 25 characters. | default | 25 |
---|
name | maxLength |
---|
type | integer |
---|
|
- For each token, the stage will increase the size by adding tokens before and after, until a match (or the 25 character limit) is reached.
- caseInsensitive (boolean, optional) -
If true, all regex will be process as case insensitive |
|
( = true) | true |
---|
name | caseInsensitive |
---|
type | boolean |
---|
|
Code Block |
---|
language | js |
---|
theme | Eclipse |
---|
title | Example Configuration |
---|
|
{
"type":"RegexPattern",
"patterns":"regex-provider:patterns",
"maxLength": 25,
"caseInsensitive": true
} |
Example Output
In the following example, "What's your name" is in the dictionary as a regex for self-name, and there are also regex for numbers "[0-9]+" and "[0-9]+\\.[0-9]+" :
Code Block |
---|
language | text | theme | FadeToGrey |
---|
|
V--------------------------------------[What's your name 12 @#$ 25 63.3]---------------------------------------V
^-----[What's]-----V--[your]--V--[name]--V-----[12]-----V--[@#$]--V-----[25]-----V-----------[63.3]------------^
^--[What]--V--[s]--^ ^--[{number}]--^ ^--[{number}]--^-----[63]-----V-----[3]------^
^-----[what's]-----^ ^---------[{number}]----------^
^--[what]--^ ^--[{number}]--^--[{number}]--^
^-------------[{self-name}]--------------^
|
Output Flags
Lex-Item Flags:
- SEMANTIC_TAG - Identifies all lexical items that are semantic tags.PROCESSED - Placed on all tokens composing the semantic tag.
Vertex Flags:
Info |
---|
No vertices are created in this stage |
Resource Data
The regex pattern must have a "pattern dictionary" (a string to JSON map) which is a list of JSON records, indexed by entity ID. In addition, there may also be a pattern map and a token index.
...
- Multiple patterns can have the same entry.
- Additional fielded data can be added to the record.
- As needed by downstream processes.
Fields
- id (required, string) -
Identifies the entity by unique ID. This identifier must be unique across all entries (across all dictionaries). | name | id |
---|
required | true |
---|
|
- Typically, this identifier has meaning to the larger application that is using the Language Processing Toolkit.Saga.
- tags (required, array of string) -
The list of semantic tags to add to the interpretation graph whenever any of the patterns are matched. | name | tags |
---|
type | string array |
---|
required | true |
---|
|
- These will all be added to the interpretation graph with the SEMANTIC_TAG flag.
patterns (required, array of string) - Parameter |
---|
summary | A list of patterns to match in the content. |
---|
|
| name | patterns |
---|
type | string array |
---|
required | true |
---|
|
- splitMatch (optional, boolean) -
Indicates whether or not the |
|
partialmatch partial match will create a regex tag even if a full match was not met. |
|
| default | false |
---|
name | splitMatch |
---|
type | boolean |
---|
|
- confidence (optional, float) -
Specifies the confidence level of |
|
the the entity, independent of any patterns matched. | name | confidence |
---|
type | double |
---|
|
- This is the confidence of the entry, in comparison to all of the other entries. Essentially, the likelihood that this entry will be randomly encountered.
Other, Optional Fields
- display (optional, string) -
What to show the user when browsing the entity. |
|
- context (optional, object) -
A context vector that can help disambiguate the entity from others with the same pattern. | name | context |
---|
|
- Format TBD, but probably a list of weighted words, phrases and tags.
...