apoc.nlp.aws.sentiment.graph

过程 Apoc 扩展

为提供的文本创建(虚拟)情感图

签名

apoc.nlp.aws.sentiment.graph(source :: ANY?, config = {} :: MAP?) :: (graph :: MAP?)

输入参数

名称 类型 默认

source

ANY?

null

config

MAP?

{}

输出参数

名称 类型

graph(图)

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。

以下定义了 apiKeyapiSecret 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.conf
apoc.static.aws.apiKey=<api-key-here>
apoc.static.aws.apiSecret=<api-secret-here>
以下从 apoc.conf 中检索 AWS 凭据
RETURN apoc.static.getAll("aws") AS aws;
表 1. 结果
aws

{apiKey: "<api-key-here>", apiSecret: "<api-secret-here>"}

使用示例

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自动存储情感及其评分。

默认情况下,返回一个虚拟图,但可以通过指定 write: true 配置来持久化该图。情感存储在 sentiment 属性中,该情感的得分存储在 sentimentScore 属性中。

以下返回包含 Pokemon 文章情感的图

MATCH (a:Article {uri: "/blog/pokegraph-gotta-graph-em-all/"})
CALL apoc.nlp.aws.sentiment.graph(a, {
  key: $apiKey,
  secret: $apiSecret,
  nodeProperty: "body",
  write: true
})
YIELD graph AS g
UNWIND g.nodes AS node
RETURN node {.uri, .sentiment, .sentimentScore} AS node;
表 2. 结果
节点

{sentiment: "Positive", sentimentScore: 0.6660025119781494, uri: "/blog/pokegraph-gotta-graph-em-all/"}

如果我们想流式传输情感结果并对结果应用自定义逻辑,请参阅 apoc.nlp.aws.sentiment.stream

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