瑞典语分析器
可以使用以下命令将内置的 swedish 分析器应用于文本字段
PUT /swedish-index
{
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "swedish"
}
}
}
}
词干排除
您可以使用以下命令将 stem_exclusion 与此语言分析器一起使用
PUT index_with_stem_exclusion_swedish_analyzer
{
"settings": {
"analysis": {
"analyzer": {
"stem_exclusion_swedish_analyzer": {
"type": "swedish",
"stem_exclusion": ["myndighet", "godkännande"]
}
}
}
}
}
瑞典语分析器内部
swedish 分析器是使用以下组件构建的
-
分词器：
standard -
词元过滤器
- 小写
- 停止词 (瑞典语)
- 关键词
- 词干提取器 (瑞典语)
自定义瑞典语分析器
可以使用以下命令创建自定义瑞典语分析器
PUT /swedish-index
{
"settings": {
"analysis": {
"filter": {
"swedish_stop": {
"type": "stop",
"stopwords": "_swedish_"
},
"swedish_stemmer": {
"type": "stemmer",
"language": "swedish"
},
"swedish_keywords": {
"type": "keyword_marker",
"keywords": []
}
},
"analyzer": {
"swedish_analyzer": {
"type": "custom",
"tokenizer": "standard",
"filter": [
"lowercase",
"swedish_stop",
"swedish_keywords",
"swedish_stemmer"
]
}
}
}
},
"mappings": {
"properties": {
"content": {
"type": "text",
"analyzer": "swedish_analyzer"
}
}
}
}
生成的词元
使用以下请求检查使用该分析器生成的词元
POST /swedish-index/_analyze
{
"field": "content",
"text": "Studenter studerar vid svenska universitet. Deras nummer är 123456."
}
响应包含生成的词元
{
"tokens": [
{
"token": "student",
"start_offset": 0,
"end_offset": 9,
"type": "<ALPHANUM>",
"position": 0
},
{
"token": "studer",
"start_offset": 10,
"end_offset": 18,
"type": "<ALPHANUM>",
"position": 1
},
{
"token": "svensk",
"start_offset": 23,
"end_offset": 30,
"type": "<ALPHANUM>",
"position": 3
},
{
"token": "universitet",
"start_offset": 31,
"end_offset": 42,
"type": "<ALPHANUM>",
"position": 4
},
{
"token": "numm",
"start_offset": 50,
"end_offset": 56,
"type": "<ALPHANUM>",
"position": 6
},
{
"token": "123456",
"start_offset": 60,
"end_offset": 66,
"type": "<NUM>",
"position": 8
}
]
}