PHP中ElasticSearch高级特性,如同义词扩展、自动建议和聚类分析,如何使用这些功能?(ElasticSearch高级功能的PHP实现)
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2024-04-02 17:21
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同义词扩展
同义词扩展功能可以帮助用户在搜索查询中使用同义词或相关词语。Elasticsearch 通过使用同义词词典来实现此功能。
PHP 实现:
$client->indices()->putMapping([
"index" => "my-index",
"body" => [
"settings" => [
"analysis" => [
"analyzer" => [
"my_analyzer" => [
"tokenizer" => "standard",
"filter" => ["lowercase", "synonym"]
]
]
]
],
"mappings" => [
"properties" => [
"title" => [
"type" => "text",
"analyzer" => "my_analyzer"
]
]
]
]
]);
$client->index([
"index" => "my-index",
"id" => "1",
"body" => [
"title" => "Elasticsearch Tutorial"
]
]);
$result = $client->search([
"index" => "my-index",
"body" => [
"query" => [
"match" => [
"title" => "Elasticsearch Guide"
]
]
]
]);
自动建议
自动建议功能可以在用户输入时提供相关建议。Elasticsearch 使用建议器来实现此功能。
PHP 实现:
$client->indices()->putMapping([
"index" => "my-index",
"body" => [
"settings" => [
"analysis" => [
"analyzer" => [
"autocomplete" => [
"tokenizer" => "autocomplete",
"filter" => ["lowercase"]
]
]
]
],
"mappings" => [
"properties" => [
"title" => [
"type" => "completion",
"analyzer" => "autocomplete"
]
]
]
]
]);
$client->index([
"index" => "my-index",
"id" => "1",
"body" => [
"title" => "Elasticsearch Tutorial"
]
]);
$result = $client->suggest([
"index" => "my-index",
"body" => [
"title" => [
"text" => "Elasticsearch",
"completion" => [
"field" => "title"
]
]
]
]);
聚类分析
聚类分析功能可以将文档分组到具有相似特征的集群中。Elasticsearch 使用聚合来实现此功能。
PHP 实现:
$result = $client->search([
"index" => "my-index",
"body" => [
"size" => 0,
"aggs" => [
"clusters" => [
"terms" => [
"field" => "category"
]
]
]
]
]);
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