我對ElasticSearch相當陌生,並且遇到了問題,我覺得我的搜索結果很好。我的目標是能夠根據用戶輸入的短語搜索藥物索引(6個字段)。這可能是一個或更多的話。我嘗試了一些方法,但是我會概述下面我發現的最好的方法。讓我知道我做錯了什麼。我猜測我錯過了一些基本的東西。ElasticSearch搜索越來越差的結果
這裏是領域的一個子集,我與
...
"hits": [
{
"_index": "indexus2",
"_type": "Medication",
"_id": "17471",
"_score": 8.829264,
"_source": {
"SearchContents": " chew chewable oral po tylenol",
"MedShortDesc": "Tylenol PO Chew",
"MedLongDesc": "Tylenol Oral Chewable"
"GenericDesc": "ACETAMINOPHEN ORAL"
...
}
}
...
我正在尋找對使用的邊緣NGRAM分析儀領域的工作。我使用的是C#巢庫索引
settings.Analysis.Tokenizers.Add("edgeNGram", new EdgeNGramTokenizer()
{
MaxGram = 50,
MinGram = 2,
TokenChars = new List<string>() { "letter", "digit" }
});
settings.Analysis.Analyzers.Add("edgeNGramAnalyzer", new CustomAnalyzer()
{
Filter = new string[] { "lowercase" },
Tokenizer = "edgeNGram"
});
我正在使用的問題對領域的more_like_this查詢
GET indexus2/Medication/_search
{
"query": {
"more_like_this" : {
"fields" : ["MedShortDesc",
"MedLongDesc",
"GenericDesc",
"SearchContents"],
"like_text" : "vicodin",
"min_term_freq" : 1,
"max_query_terms" : 25,
"min_word_len": 2
}
}
}
的問題是,這個搜索「維柯丁」,我我期望看到與全面工作的首次匹配,但我沒有。以下是這個查詢結果的一個子集。維柯丁不露面,直到第7結果
"hits": [
{
"_index": "indexus2",
"_type": "Medication",
"_id": "31192",
"_score": 4.567309,
"_source": {
"SearchContents": " oral po victrelis",
"MedShortDesc": "Victrelis PO",
"MedLongDesc": "Victrelis Oral",
"RepresentativeRoutedGenericDesc": "BOCEPREVIR ORAL",
...
}
}
<5 more similar results>
{
"_index": "indexus2",
"_type": "Medication",
"_id": "26198",
"_score": 2.2836545,
"_source": {
"SearchContents": " (original 5 500 feeding mg strength) tube via vicodin",
"MedShortDesc": "Vicodin 5 mg-500 mg (Original Strength) via feeding tube",
"MedLongDesc": "Vicodin 5 mg-500 mg (Original Strength) via feeding tube",
"GenericDesc": "HYDROCODONE BITARTRATE/ACETAMINOPHEN ORAL",
...
}
}
字段映射
"OrderableMedLongDesc": {
"type": "string",
"analyzer": "edgeNGramAnalyzer"
},
"OrderableMedShortDesc": {
"type": "string",
"analyzer": "edgeNGramAnalyzer"
},
"RepresentativeRoutedGenericDesc": {
"type": "string",
"analyzer": "edgeNGramAnalyzer"
},
"SearchContents": {
"type": "string",
"analyzer": "edgeNGramAnalyzer"
},
這裏是ES顯示我_settings分析儀的
"analyzer": {
"edgeNGramAnalyzer": {
"type": "custom",
"filter": [
"lowercase"
],
"tokenizer": "edgeNGram"
}
},
"tokenizer": {
"edgeNGram": {
"min_gram": "2",
"type": "edgeNGram",
"max_gram": "50"
}
}
你可以張貼映射領域 – keety
@keety,我更新了帖子補充一點細節。謝謝 – Dennis