Init Commit

Pearson.cpp

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+//
+// Created by fly on 2021/11/25.
+//
+
+#include "Pearson.h"
+#include <numeric>
+#include <cmath>
+
+Pearson::Pearson(uint64_t index, const std::vector<double> &primary, const std::vector<double> &other, QObject *parent)
+        :
+        m_index(index),
+        m_primary(primary),
+        m_other(other),
+        QObject(parent) {
+
+}
+
+void Pearson::run() {
+    auto n = m_primary.size() * 1.0;
+    double pearson = n * std::inner_product(m_primary.begin(), m_primary.end(), m_other.begin(), 0.0) -
+                     std::accumulate(m_primary.begin(), m_primary.end(), 0.0) *
+                     std::accumulate(m_other.begin(), m_other.end(), 0.0);
+
+    double temp1 = n * std::inner_product(m_primary.begin(), m_primary.end(), m_primary.begin(), 0.0) -
+                   std::pow(std::accumulate(m_primary.begin(), m_primary.end(), 0.0), 2.0);
+    double temp2 = n * std::inner_product(m_other.begin(), m_other.end(), m_other.begin(), 0.0) -
+                   std::pow(std::accumulate(m_other.begin(), m_other.end(), 0.0), 2.0);
+    temp1 = std::sqrt(temp1);
+    temp2 = std::sqrt(temp2);
+    auto temp = (temp1 * temp2);
+    if (temp != 0) {
+        pearson = pearson / temp;
+        if (!std::isnan(pearson)) {
+            emit result(m_index, pearson);
+        }
+    }
+
+    emit finished();
+}