apoc.nlp.aws.keyPhrases.stream
过程 Apoc 扩展
返回提供的文本的关键短语流
签名
apoc.nlp.aws.keyPhrases.stream(source :: ANY?, config = {} :: MAP?) :: (node :: NODE?, value :: MAP?, error :: MAP?)
安装依赖
NLP 过程依赖于 Kotlin 和客户端库,这些库未包含在 APOC Extended 库中。
这些依赖项包含在 apoc-nlp-dependencies-2025.10.0-all.jar 中,可从 发布页面 下载。下载该文件后,应将其放入 plugins 目录并重启 Neo4j 服务器。
设置 API 密钥
我们可以按照 docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html 上的说明生成访问密钥和密码。完成后,我们可以填充并执行以下命令来创建包含这些详细信息的参数。
apiKey 和 apiSecret 参数
:param apiKey => ("<api-key-here>");
:param apiSecret => ("<api-secret-here>");
或者,我们可以将这些凭据添加到 apoc.conf 中,并使用静态值存储函数来检索它们。
apoc.static.aws.apiKey=<api-key-here>
apoc.static.aws.apiSecret=<api-secret-here>
apoc.conf 中检索 AWS 凭据
RETURN apoc.static.getAll("aws") AS aws;
| aws |
|---|
{apiKey: "<api-key-here>", apiSecret: "<api-secret-here>"} |
用法示例
本节中的示例基于以下示例图
CREATE (:Article {
uri: "/blog/pokegraph-gotta-graph-em-all/",
body: "These days I’m rarely more than a few feet away from my Nintendo Switch and I play board games, card games and role playing games with friends at least once or twice a week. I’ve even organised lunch-time Mario Kart 8 tournaments between the Neo4j European offices!"
});
CREATE (:Article {
uri: "https://en.wikipedia.org/wiki/Nintendo_Switch",
body: "The Nintendo Switch is a video game console developed by Nintendo, released worldwide in most regions on March 3, 2017. It is a hybrid console that can be used as a home console and portable device. The Nintendo Switch was unveiled on October 20, 2016. Nintendo offers a Joy-Con Wheel, a small steering wheel-like unit that a Joy-Con can slot into, allowing it to be used for racing games such as Mario Kart 8."
});
我们可以使用此过程从 Article 节点中提取关键短语。我们想要分析的文本存储在节点的 body 属性中,因此我们需要通过 nodeProperty 配置参数来指定它。
以下流式输出 Pokemon 文章的关键短语
MATCH (a:Article {uri: "/blog/pokegraph-gotta-graph-em-all/"})
CALL apoc.nlp.aws.keyPhrases.stream(a, {
key: $apiKey,
secret: $apiSecret,
nodeProperty: "body"
})
YIELD value
UNWIND value.keyPhrases AS keyPhrase
RETURN keyPhrase;
| keyPhrase |
|---|
{score: 0.9999966621398926, endOffset: 10, text: "These days", beginOffset: 0} |
{score: 0.9867414236068726, endOffset: 42, text: "more than a few feet", beginOffset: 22} |
{score: 0.9999999403953552, endOffset: 71, text: "my Nintendo Switch", beginOffset: 53} |
{score: 0.9999997019767761, endOffset: 94, text: "board games", beginOffset: 83} |
{score: 0.9999964237213135, endOffset: 106, text: "card games", beginOffset: 96} |
{score: 0.9998161792755127, endOffset: 129, text: "role playing games", beginOffset: 111} |
{score: 1.0, endOffset: 142, text: "friends", beginOffset: 135} |
{score: 0.8642383217811584, endOffset: 172, text: "a week", beginOffset: 166} |
{score: 0.9999430179595947, endOffset: 215, text: "lunch-time Mario Kart", beginOffset: 194} |
{score: 0.9983567595481873, endOffset: 229, text: "8 tournaments", beginOffset: 216} |
{score: 0.999997615814209, endOffset: 264, text: "the Neo4j European offices", beginOffset: 238} |
如果我们想要自动创建关键短语图,请参阅 apoc.nlp.aws.keyPhrases.graph。