如何在C++中进行情感识别和情感分析？

#include <iostream>
#include <vector>
#include <map>
#include <string>

using namespace std;

// 构建词袋模型
map<string, int> buildBagOfWords(const vector<string>& document) {
    map<string, int> wordCount;
    for (const auto& word : document) {
        wordCount[word]++;
    }
    return wordCount;
}

int main() {
    // 原始文本
    vector<string> document = {"I", "love", "this", "movie", "it", "is", "amazing"};

    // 构建词袋模型
    map<string, int> bagOfWords = buildBagOfWords(document);

    // 输出词袋模型
    for (const auto& entry : bagOfWords) {
        cout << entry.first << ": " << entry.second << endl;
    }

    return 0;
}

#include <iostream>
#include <map>
#include <vector>

using namespace std;

// 训练朴素贝叶斯模型
map<string, double> trainNaiveBayesModel(const vector<vector<string>>& trainingData, const vector<string>& labels) {
    map<string, double> model;

    // 统计每个词在正面和负面样本中出现的次数
    int numPositiveWords = 0, numNegativeWords = 0;
    map<string, int> positiveWordCount, negativeWordCount;
    for (int i = 0; i < trainingData.size(); ++i) {
        const auto& document = trainingData[i];
        const auto& label = labels[i];

        for (const auto& word : document) {
            if (label == "positive") {
                positiveWordCount[word]++;
                numPositiveWords++;
            } else if (label == "negative") {
                negativeWordCount[word]++;
                numNegativeWords++;
            }
        }
    }

    // 计算每个词在正面和负面样本中的概率
    for (const auto& entry : positiveWordCount) {
        const auto& word = entry.first;
        const auto& count = entry.second;

        model[word] = (count + 1) / double(numPositiveWords + positiveWordCount.size());
    }

    for (const auto& entry : negativeWordCount) {
        const auto& word = entry.first;
        const auto& count = entry.second;

        model[word] = (count + 1) / double(numNegativeWords + negativeWordCount.size());
    }

    return model;
}

// 利用朴素贝叶斯模型进行情感分类
string classifyDocument(const vector<string>& document, const map<string, double>& model) {
    double positiveProbability = 0, negativeProbability = 0;
    for (const auto& word : document) {
        if (model.count(word) > 0) {
            positiveProbability += log(model.at(word));
            negativeProbability += log(1 - model.at(word));
        }
    }

    if (positiveProbability > negativeProbability) {
        return "positive";
    } else {
        return "negative";
    }
}

int main() {
    // 训练数据和标签
    vector<vector<string>> trainingData = {{"I", "love", "this", "movie"},
                                           {"I", "hate", "this", "movie"},
                                           {"It", "is", "amazing"},
                                           {"It", "is", "terrible"}};
    vector<string> labels = {"positive", "negative", "positive", "negative"};

    // 训练朴素贝叶斯模型
    map<string, double> model = trainNaiveBayesModel(trainingData, labels);

    // 对新的文本进行情感分类
    vector<string> document = {"I", "love", "this", "movie"};
    string sentiment = classifyDocument(document, model);

    cout << "Sentiment of the document: " << sentiment << endl;

    return 0;
}