Concept "Document Text Analysis"
C1711497691
What makes up an "Analyzer"?[edit | edit source]
Character filtering[edit | edit source]
- E.g. strip HTML tags or "I love u 2" → "I love you too", "&" → "and"
Tokenization[edit | edit source]
Token filtering[edit | edit source]
- E.g. lowercasing
Token indexing[edit | edit source]
How are analyzers (to be used by fields) specified?[edit | edit source]
(Analyzer usage by fields is specified in mapping.)
- for the index
- for a node
- for a type
- for a field
- for a query
- globally: in Elasticsearch's configuration file
What performs analysis?[edit | edit source]
| Type | Performs analysis? | |
|---|---|---|
| Concept "Full text queries > match_phrase (aka proximity)" | QueryType | true |
| Concept "full_text/match_phrase_prefix" | QueryType | true |
| Concept "full_text/query_string" | QueryType | true |
