EDIT:除此之外,同义词似乎适用于基本的查询字符串查询。
"query_string" : {
"default_field" : "location.region.name.raw",
"query" : "nh"
}
这会返回新罕布什尔州的所有结果,但对"nh"的"match"查询不会返回任何结果。
我正在尝试将同义词添加到我的Elastic索引中的位置字段中,这样,如果我对"Mass"、"Ma"或"Massachusetts"进行位置搜索,每次都会得到相同的结果。我在设置中添加了同义词过滤器,并更改了位置映射。以下是我的设置:
analysis":{
"analyzer":{
"synonyms":{
"filter":[
"lowercase",
"synonym_filter"
],
"tokenizer": "standard"
}
},
"filter":{
"synonym_filter":{
"type": "synonym",
"synonyms":[
"United States,US,USA,USA=>usa",
"Alabama,Al,Ala,Ala",
"Alaska,Ak,Alas,Alas",
"Arizona,Az,Ariz",
"Arkansas,Ar,Ark",
"California,Ca,Calif,Cal",
"Colorado,Co,Colo,Col",
"Connecticut,Ct,Conn",
"Deleware,De,Del",
"District of Columbia,Dc,Wash Dc,Washington Dc=>Dc",
"Florida,Fl,Fla,Flor",
"Georgia,Ga",
"Hawaii,Hi",
"Idaho,Id,Ida",
"Illinois,Il,Ill,Ills",
"Indiana,In,Ind",
"Iowa,Ia,Ioa",
"Kansas,Kans,Kan,Ks",
"Kentucky,Ky,Ken,Kent",
"Louisiana,La",
"Maine,Me",
"Maryland,Md",
"Massachusetts,Ma,Mass",
"Michigan,Mi,Mich",
"Minnesota,Mn,Minn",
"Mississippi,Ms,Miss",
"Missouri,Mo",
"Montana,Mt,Mont",
"Nebraska,Ne,Neb,Nebr",
"Nevada,Nv,Nev",
"New Hampshire,Nh=>Nh",
"New Jersey,Nj=>Nj",
"New Mexico,Nm,N Mex,New M=>Nm",
"New York,Ny=>Ny",
"North Carolina,Nc,N Car=>Nc",
"North Dakota,Nd,N Dak, NoDak=>Nd",
"Ohio,Oh,O",
"Oklahoma,Ok,Okla",
"Oregon,Or,Oreg,Ore",
"Pennsylvania,Pa,Penn,Penna",
"Rhode Island,Ri,Ri & PP,R Isl=>Ri",
"South Carolina,Sc,S Car=>Sc",
"South Dakota,Sd,S Dak,SoDak=>Sd",
"Tennessee,Te,Tenn",
"Texas,Tx,Tex",
"Utah,Ut",
"Vermont,Vt",
"Virginia,Va,Virg",
"Washington,Wa,Wash,Wn",
"West Virginia,Wv,W Va, W Virg=>Wv",
"Wisconsin,Wi,Wis,Wisc",
"Wyomin,Wi,Wyo"
]
}
}
以及位置的映射。区域字段:
"region":{
"properties":{
"id":{"type": "long"},
"name":{
"type": "string",
"analyzer": "synonyms",
"fields":{"raw":{"type": "string", "index": "not_analyzed" }}
}
}
}
但是同义词分析器似乎什么都没做。例如,此查询:
"match" : {
"location.region.name" : {
"query" : "Massachusetts",
"type" : "phrase",
"analyzer" : "synonyms"
}
}
这会返回数百个结果,但如果我将"Massachusetts"替换为"Ma"或"Mass",则会得到0个结果。为什么它不起作用?
过滤器的顺序是
filter":[
"lowercase",
"synonym_filter"
]
因此,如果弹性搜索首先"降低"标记,那么当它执行第二步synonym_filter
时,它将不匹配您定义的任何条目。
为了解决这个问题,我将用小写
您还可以将同义词过滤器定义为不区分大小写:
"筛选器":{"同义词筛选器":{"type":"同义词","ignore_case":"true","同义词":[。。。]}}