Namespace Lucene.Net.Search.PostingsHighlight

Highlighter implementation that uses offsets from postings lists.

Classes

DefaultPassageFormatter

Creates a formatted snippet from the top passages.

The default implementation marks the query terms as bold, and places ellipses between unconnected passages.

ICUPostingsHighlighter

Simple highlighter that does not analyze fields nor use term vectors. Instead it requires DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS.

Passage

Represents a passage (typically a sentence of the document).

A passage contains NumMatches highlights from the query, and the offsets and query terms that correspond with each match.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

PassageFormatter

Creates a formatted snippet from the top passages.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

PassageScorer

Ranks passages found by ICUPostingsHighlighter.

Each passage is scored as a miniature document within the document. The final score is computed as norm * ∑ (weight * tf). The default implementation is norm * BM25.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

WholeBreakIterator

Just produces one single fragment for the entire text