Add files via upload

Author: forhadsidhu

dataset.cpp

@@ -0,0 +1,83 @@
+#include<vector>
+#include<fstream>
+#include<sstream>
+#include<iostream>
+#include<unordered_map>
+#include<initializer_list>
+#include "dataset.h"
+
+
+void DataSet::ReadCSVFile(std::string file_name) {
+
+	std::ifstream file(file_name.c_str());
+	if (!file) {
+		file.open(file_name.c_str());
+	}
+	if (!file) {
+		std::cerr << "Error No" << file_name << " found. " << std::endl;
+
+	}
+
+	std::stringstream buffer;
+	buffer << file.rdbuf();
+	std::string line;
+	std::vector<std::string>lines;
+	while (getline(buffer, line, '\n')) {
+		lines.push_back(line);
+	}
+
+	//the other lines contain the features for each floaer
+
+	for (int i = 1; i < lines.size(); ++i) {
+		std::vector<float>features =ReadCSVLine(lines[i]);
+		x1_.push_back(features[0]);
+		x2_.push_back(features[1]);
+		x3_.push_back(features[2]);
+		x4_.push_back(features[3]);
+		y_.push_back(features[4]);
+
+	}
+}
+
+std::vector<float>DataSet::ReadCSVLine(std::string line) {
+	std::vector<float> line_data;
+	std::stringstream lineStream(line);
+	std::string cell;
+	while (std::getline(lineStream, cell, ','))
+	{
+		if (cell != "setosa" && cell != "versicolor" && cell != "virginica") {
+			line_data.push_back(std::stod(cell.c_str()));
+		}
+		else {
+			if (cell == "setosa") {
+				line_data.push_back(0.0f);
+			}
+			else if (cell == "versicolor") {
+				line_data.push_back(1.0f);
+			}
+			else {
+				line_data.push_back(2.0f);
+			}
+		}
+	}
+	return line_data;
+
+}
+
+
+std::initializer_list<float> DataSet::input(float petal_length, float petal_width, float sepal_length, float sepal_width) {
+	return { petal_length,petal_width,sepal_length,sepal_width };
+}
+
+std::string DataSet::output(std::vector<float> one_hot_encoding_species) {
+	if (one_hot_encoding_species[0] == 1) {
+		return "setosa";
+	}
+	else if (one_hot_encoding_species[1] == 1) {
+		return "versicolor";
+	}
+	else {
+		return "virginica";
+	}
+}
+

dataset.h

@@ -0,0 +1,60 @@
+#pragma once
+
+#include<iostream>
+#include<string>
+#include<vector>
+#include<unordered_map>
+#include<initializer_list>
+
+
+class DataSetMetaData {
+
+	friend class DataSet;
+private:
+	float sepal_length;
+	float sepal_width;
+	float petal_length;
+	float petal_width;
+	std::string species;
+};
+
+class DataSet {
+
+public:
+
+	//read the given csv file and complete_x and y_
+	void ReadCSVFile(std::string file_name);
+
+
+	//Construct a data set from the given csv file path
+	DataSet(std::string file_name) {
+		ReadCSVFile(file_name);
+	}
+
+	///getters
+
+	std::vector<float>& x1() { return x1_; }
+	std::vector<float>& x2() { return x2_; }
+	std::vector<float>& x3() { return x3_; }
+	std::vector<float>& x4() { return x4_;}
+	std::vector<float& y() { return y_; }
+
+
+
+	///convert one csv line to a vector of float
+
+	std::vector<float>ReadCSVLine(std::string line);
+	///normalize a human input using the data set metadata
+	std::initializer_list<float>input(float petal_length,float peta_width,float sepal_length,float sepal_width);
+
+	std::string output(std::vector<float>one_hot_encoding_species);
+
+private:
+	DataSetMetaData data_set_metadata;
+	std::vector<float>x1_;
+	std::vector<float>x2_;
+	std::vector < float>x3_;
+	std::vector<float>x4_;
+	std::vector<float>y_;
+};
+