Lucene Pipeline

This stage uses Apache Lucene™ to create custom pipelines apart from the default selection of pipelines. It offers a large amount of possible customization options and filters to adapt to the users needs.

Configuration

• Tokenizer ( type=string | default=None | required ) - Tokenizer to use for the pipeline (only one can be used at a time).
  
  • It offers more than 10 different Tokenizers from nGrams to Japanese Tokenizers.
• Filter ( type=string | default=None | optional ) - Filter to use for the pipeline (can be stacked).
• Save Configuration ( type=boolean | optional ) - Saves current configuration for the Tokenizer/Filters pair.

General Settings

The general settings can be accessed by clicking on 

• Enable - Enables the processor to be used in the pipeline.
• Skip Flags ( optional ) - Lexical items flags to be ignored by this processor.
• Boundary Flags  ( optional ) - List of vertex flags that indicate the beginning and end of a text block.
  
• Required Flags ( optional ) - Lexical items flags required by every token to be processed.
• At Least One Flags ( optional ) - List of lexical item flags where at least one of them needs to be present to be processed.
• Don't Process Flags ( optional ) - List of lexical items flags that are not processed. The difference with "Skip Flags" is that this will drop the path in the Saga graph, skip just skips the token and continues in the same path.
• Confidence Adjustment - Adjustment factor to apply to the confidence value of 0.0 to 2.0 from (Applies for every 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 - Enable debug logging.