apoc.nlp.aws.sentiment.graph
过程 Apoc 扩展
为提供的文本创建(虚拟)情感图
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
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.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;
| 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;
| 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。