ctakes chunker - apache/ctakes GitHub Wiki
In cTAKES when we refer to a "chunker" we often mean a shallow parser, i.e. a component that tags noun phrases, verb phrases, etc.
This project provides a Apache UIMA wrapper around the popular Apache OpenNLP chunker.
Annotation Engines
Utilities
Piper Files
Annotator that generates chunks of any kind as specified by the chunker model and the chunk creator.
Source class: Chunker
Source package: org.apache.ctakes.chunker.ae
Parent class: org.apache.uima.fit.component.JCasAnnotator_ImplBase
Dependencies: Sentence, Base Token
Products: Chunk
| Parameter | Description | Class | Required | Default |
|---|---|---|---|---|
| ChunkCreatorClass | The class that will create the chunks | String | No | org.apache.ctakes.chunker.ae. DefaultChunkCreator |
| ChunkerModelFile | Model file for OpenNLP chunker | String | No | org/apache/ctakes/chunker/models/ chunker-model.zip |
Annotator that generates chunks of any kind as specified by the chunker model and the chunk creator.
Source class: ThreadSafeChunker
Source package: org.apache.ctakes.chunker.concurrent
Parent class: org.apache.ctakes.chunker.ae.Chunker
Dependencies: Sentence, Base Token
Products: Chunk
| Parameter | Description | Class | Required | Default |
|---|---|---|---|---|
| ChunkCreatorClass | The class that will create the chunks | String | No | org.apache.ctakes.chunker.ae. DefaultChunkCreator |
| ChunkerModelFile | Model file for OpenNLP chunker | String | No | org/apache/ctakes/chunker/models/ chunker-model.zip |
Annotator that uses a pattern and a rule about that pattern to adjust certain annotations.
Source class: ChunkAdjuster
Source package: org.apache.ctakes.chunker.ae.adjuster
Parent class: org.apache.uima.fit.component.JCasAnnotator_ImplBase
Dependencies: Sentence, Chunk
| Parameter | Description | Class | Required | Default |
|---|---|---|---|---|
| ChunkPattern | The pattern of chunks that trigger an adjustment | String[] | Yes | |
| IndexOfTokenToInclude | The index of the token in the pattern to extend to the end offset | int | Yes |
Commands and parameters to create a default chunker processing sub-pipeline.
$\textcolor{gray}{\textsf{// Commands and parameters to create a default chunker processing sub-pipeline. }}$
$\textcolor{gray}{\textsf{// This is not a full pipeline. }}$
$\textcolor{green}{\textbf{add}}$ Chunker
$\textcolor{green}{\textbf{addDescription}}$ $\textcolor{blue}{\textsf{adjuster.ChunkAdjuster}}$ NP,NP 1
$\textcolor{green}{\textbf{addDescription}}$ $\textcolor{blue}{\textsf{adjuster.ChunkAdjuster}}$ NP,PP,NP 2
Commands and parameters to create a thread-safe default chunker processing sub-pipeline.
$\textcolor{gray}{\textsf{// Commands and parameters to create a thread-safe default chunker processing sub-pipeline. }}$
$\textcolor{gray}{\textsf{// This is not a full pipeline. }}$
$\textcolor{green}{\textbf{add}}$ $\textcolor{blue}{\textsf{concurrent.ThreadSafeChunker}}$
$\textcolor{green}{\textbf{addDescription}}$ $\textcolor{blue}{\textsf{adjuster.ChunkAdjuster}}$ NP,NP 1
$\textcolor{green}{\textbf{addDescription}}$ $\textcolor{blue}{\textsf{adjuster.ChunkAdjuster}}$ NP,PP,NP 2