java - 情绪评分 Stanford Core NLP

Question

我们如何使用 Stanford 核心 NLP 获得完整句子的情感分数？

它将完整的句子分为积极情绪和消极情绪，但我们能否通过斯坦福 NLP 工具获得总情绪得分？

Answer 1

我所做的是根据句子的长度来平均每个句子的分数。其背后的逻辑是，较长的句子应该比较短的句子更有分量。

代码如下所示:

String line = "Great item! HDMI and decent wifi required as with all streaming devices.\n" +
            "The flow on the homepage is very good and responsive. Watching a series is a doddle, flow is great, no action required.\n" +
            "The remote and controller app both work a treat.\n" +
            "I really like this device.\n" +
            "I'd like to see an Amazon-written mirroring app available for non-Amazon products but no-one likes talking to each other in this field!";

    Long textLength = 0L;
    int sumOfValues = 0;

    Properties props = new Properties();
    props.setProperty("annotators", "tokenize, ssplit, parse, sentiment");
    StanfordCoreNLP pipeline = new StanfordCoreNLP(props);
    int mainSentiment = 0;
    if (line != null && line.length() > 0) {
        int longest = 0;
        Annotation annotation = pipeline.process(line);
        for (CoreMap sentence : annotation.get(CoreAnnotations.SentencesAnnotation.class)) {
            Tree tree = sentence.get(SentimentCoreAnnotations.AnnotatedTree.class);
            int sentiment = RNNCoreAnnotations.getPredictedClass(tree);
            String partText = sentence.toString();
            if (partText.length() > longest) {
                textLength += partText.length();
                sumOfValues = sumOfValues + sentiment * partText.length();

                System.out.println(sentiment + " " + partText);
            }
        }
    }

    System.out.println("Overall: " + (double)sumOfValues/textLength);

下载整个项目here