From 88ced7a06eaf0fe2a0899e46225fa78e67f41840 Mon Sep 17 00:00:00 2001
From: Andru Liu <90433630+WallabyLester@users.noreply.github.com>
Date: Tue, 8 Oct 2024 20:59:37 -0700
Subject: [PATCH] Implemented gaussian.

---
 CPP_Implementation/rbf_model.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/CPP_Implementation/rbf_model.cpp b/CPP_Implementation/rbf_model.cpp
index 04d0549..9af2bad 100644
--- a/CPP_Implementation/rbf_model.cpp
+++ b/CPP_Implementation/rbf_model.cpp
@@ -41,3 +41,13 @@ RBFModel::~RBFModel() {
     delete[] weights; // Free memory for weights
 }
 
+/**
+ * @brief Gaussian function used in RBF evaluation.
+ */
+double RBFModel::gaussian(const double* input, const double* center) {
+    double norm = 0.0;
+    for (int i = 0; i < inputDim; ++i) {
+        norm += pow(input[i] - center[i], 2);
+    }
+    return exp(-0.5 * norm / (sigma * sigma));
+}