如何使用R包elastic在Elasticsearch中包含同义词

Question

我想使用R包elastic在Elasticsearch中包含同义词，最好只在搜索时包含。我弄不动这个。希望有人能帮我。谢谢!

这里我举一个例子，假设brain、mind和smart是同义词。

My code in R…

library(elastic)
connection <- connect()
#index_delete(connection,"test")
index_create(connection, "test")
properties <-
'{
"properties": {
"sentence": {
"type":                "text",
"position_increment_gap": 100
}
}
}'
mapping_create(connection, "test", body = properties)
sentences <- data.frame(sentence = c("This is a brain","This a a mind","This is fun","This is smart"))
document  <- cbind(1,sentences)
colnames(document)[1] <- "document"
docs_bulk(connection,document,"test")
emptyBody <-
'{
"query": {
"match_phrase": {
"sentence": {
"query": "this mind",
"slop": 100
}
}
}
}'
Search(connection,"test",body=emptyBody)

…返回…

"This a mind"

但是我想…

"This is a brain" 
"This is a mind"
"This is smart"

设置?基于R包elastic的文档和一些一般搜索，我尝试了以下代码块，将其放在"属性"代码块之前，但这没有任何效果。(

settings <- '{
"analysis": {
"analyzer": {
"synonym_analyzer": {
"tokenizer": "standard",
"filter": ["lowercase", "synonym_filter"]
}
},
"filter": {
"synonym_filter": {
"type": "synonym_graph",
"synonyms": [
"brain, mind, smart"
]
}
}
}
}
}'
index_analyze(connection, "test", body = settings)

Answer 1

您是否在映射字段中使用同义词分析器?

"mappings": {
"properties": {
"name": {
"type": "text",
"search_analyzer": "synonym_analyzer"
}
}
}

Answer 2

我找到了解决方案

我必须创建具有特定设置的索引(而不是使用index_analyze函数)。

settings <- '
{
"settings": {
"index": {
"analysis": {
"filter": {
"my_graph_synonyms": {
"type": "synonym_graph",
"synonyms": [
"mind, brain",
"brain storm, brainstorm, envisage"
]
}
},
"analyzer": {
"my_index_time_analyzer": {
"tokenizer": "standard",
"filter": [
"lowercase",
"stemmer"
]
},
"my_search_time_analyzer": {
"tokenizer": "standard",
"filter": [
"lowercase",
"stemmer",
"my_graph_synonyms"
]
}
}
}
}
},
"mappings": {
"properties": {
"sentence": {
"type": "text",
"analyzer": "my_index_time_analyzer",
"search_analyzer": "my_search_time_analyzer"
}
}
}
}'
index_create(connection, "test", body = settings)

使用Alexander Marquardt分享的例子