KeywordMarkerFilter

Marks specified tokens as keywords to protect them from stemming.

Import

import KeywordMarkerFilter from 'dynamosearch/filters/KeywordMarkerFilter';

Constructor

new KeywordMarkerFilter(options: { keywords: string[] })

Parameters

• keywords (string[]) - Array of words to mark as keywords

Example

const filter = new KeywordMarkerFilter({ keywords: ['running', 'programming'] });
const tokens = filter.apply([
  { token: 'running', startOffset: 0, endOffset: 7, position: 0 },
  { token: 'jumping', startOffset: 8, endOffset: 15, position: 1 },
]);
// [
//   { token: 'running', startOffset: 0, endOffset: 7, position: 0, keyword: true },
//   { token: 'jumping', startOffset: 8, endOffset: 15, position: 1, keyword: false }
// ]

Best For

• Protecting specific words from stemming
• Preserving technical terms
• Domain-specific vocabulary

See Also

• KeywordRepeatFilter - For dual processing
• PorterStemFilter - Respects keyword markers