Estonian analyzer
The built-in estonian analyzer can be applied to a text field using the following command:
PUT /estonian-index
{
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "estonian"
}
}
}
}
Stem exclusion
You can use stem_exclusion with this language analyzer using the following command:
PUT index_with_stem_exclusion_estonian_analyzer
{
"settings": {
"analysis": {
"analyzer": {
"stem_exclusion_estonian_analyzer": {
"type": "estonian",
"stem_exclusion": ["autoriteet", "kinnitus"]
}
}
}
}
}
Estonian analyzer internals
The estonian analyzer is built using the following components:
-
Tokenizer:
standard -
Token filters:
- lowercase
- stop (Estonian)
- keyword
- stemmer (Estonian)
Custom Estonian analyzer
You can create a custom Estonian analyzer using the following command:
PUT /estonian-index
{
"settings": {
"analysis": {
"filter": {
"estonian_stop": {
"type": "stop",
"stopwords": "_estonian_"
},
"estonian_stemmer": {
"type": "stemmer",
"language": "estonian"
},
"estonian_keywords": {
"type": "keyword_marker",
"keywords": []
}
},
"analyzer": {
"estonian_analyzer": {
"type": "custom",
"tokenizer": "standard",
"filter": [
"lowercase",
"estonian_stop",
"estonian_keywords",
"estonian_stemmer"
]
}
}
}
},
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "estonian_analyzer"
}
}
}
}
Generated tokens
Use the following request to examine the tokens generated using the analyzer:
POST /estonian-index/_analyze
{
"field": "content",
"text": "Õpilased õpivad Tallinnas ja Eesti ülikoolides. Nende numbrid on 123456."
}
The response contains the generated tokens:
{
"tokens": [
{"token": "õpilase","start_offset": 0,"end_offset": 8,"type": "<ALPHANUM>","position": 0},
{"token": "õpi","start_offset": 9,"end_offset": 15,"type": "<ALPHANUM>","position": 1},
{"token": "tallinna","start_offset": 16,"end_offset": 25,"type": "<ALPHANUM>","position": 2},
{"token": "eesti","start_offset": 29,"end_offset": 34,"type": "<ALPHANUM>","position": 4},
{"token": "ülikooli","start_offset": 35,"end_offset": 46,"type": "<ALPHANUM>","position": 5},
{"token": "nende","start_offset": 48,"end_offset": 53,"type": "<ALPHANUM>","position": 6},
{"token": "numbri","start_offset": 54,"end_offset": 61,"type": "<ALPHANUM>","position": 7},
{"token": "on","start_offset": 62,"end_offset": 64,"type": "<ALPHANUM>","position": 8},
{"token": "123456","start_offset": 65,"end_offset": 71,"type": "<NUM>","position": 9}
]
}