Refactor input grid parameters to json file

src/Platform/GridData.cc

@@ -1,31 +1,15 @@
 #include "GridData.h"
-#include <iostream>
+#include <fstream>
 
 namespace platform {
-    GridData::GridData()
+    GridData::GridData(const std::string& fileName)
     {
-        auto boostaode = R"(
-            [
-                {
-                    "convergence": [true, false],
-                    "ascending": [true, false],
-                    "repeatSparent": [true, false],
-                    "select_features": ["CFS", "FCBF"],
-                    "tolerance": [0, 3, 5],
-                    "threshold": [1e-7]
-                },
-                {
-                    "convergence": [true, false],
-                    "ascending": [true, false],
-                    "repeatSparent": [true, false],
-                    "select_features": ["IWSS"],
-                    "tolerance": [0, 3, 5],
-                    "threshold": [0.5]
-                
-                }
-            ]
-        )"_json;
-        grid["BoostAODE"] = boostaode;
+        std::ifstream resultData(fileName);
+        if (resultData.is_open()) {
+            grid = json::parse(resultData);
+        } else {
+            throw std::invalid_argument("Unable to open input file. [" + fileName + "]");
+        }
     }
     int GridData::computeNumCombinations(const json& line)
     {
@@ -35,10 +19,10 @@ namespace platform {
         }
         return numCombinations;
     }
-    int GridData::getNumCombinations(const std::string& model)
+    int GridData::getNumCombinations()
     {
         int numCombinations = 0;
-        for (const auto& line : grid.at(model)) {
+        for (const auto& line : grid) {
             numCombinations += computeNumCombinations(line);
         }
         return numCombinations;
@@ -60,10 +44,10 @@ namespace platform {
         }
         return currentCombination;
     }
-    std::vector<json> GridData::getGrid(const std::string& model)
+    std::vector<json> GridData::getGrid()
     {
         auto result = std::vector<json>();
-        for (json line : grid.at(model)) {
+        for (json line : grid) {
             generateCombinations(line.begin(), line.end(), result, json({}));
         }
         return result;

src/Platform/GridData.h

@@ -9,14 +9,14 @@ namespace platform {
     using json = nlohmann::json;
     class GridData {
     public:
-        GridData();
+        explicit GridData(const std::string& fileName);
         ~GridData() = default;
-        std::vector<json> getGrid(const std::string& model);
-        int getNumCombinations(const std::string& model);
+        std::vector<json> getGrid();
+        int getNumCombinations();
     private:
         json generateCombinations(json::iterator index, const json::iterator last, std::vector<json>& output, json currentCombination);
         int computeNumCombinations(const json& line);
-        std::map<std::string, json> grid;
+        json grid;
     };
 } /* namespace platform */
 #endif /* GRIDDATA_H */

src/Platform/GridSearch.cc

@@ -10,6 +10,7 @@ namespace platform {
     GridSearch::GridSearch(struct ConfigGrid& config) : config(config)
     {
         this->config.output_file = config.path + "grid_" + config.model + "_output.json";
+        this->config.input_file = config.path + "grid_" + config.model + "_input.json";
     }
     void showProgressComb(const int num, const int total, const std::string& color)
     {
@@ -83,7 +84,9 @@ namespace platform {
         auto datasets = Datasets(config.discretize, Paths::datasets());
         // Create model
         std::cout << "***************** Starting Gridsearch *****************" << std::endl;
-        auto totalComb = grid.getNumCombinations(config.model);
+        std::cout << "input file=" << config.input_file << std::endl;
+        auto grid = GridData(config.input_file);
+        auto totalComb = grid.getNumCombinations();
         std::cout << "* Doing " << totalComb << " combinations for each dataset/seed/fold" << std::endl;
         // Generate hyperparameters grid & run gridsearch
         // Check each combination of hyperparameters for each dataset and each seed
@@ -92,7 +95,7 @@ namespace platform {
             int num = 0;
             double bestScore = 0.0;
             json bestHyperparameters;
-            for (const auto& hyperparam_line : grid.getGrid(config.model)) {
+            for (const auto& hyperparam_line : grid.getGrid()) {
                 showProgressComb(++num, totalComb, Colors::CYAN());
                 auto hyperparameters = platform::HyperParameters(datasets.getNames(), hyperparam_line);
                 double score = processFile(dataset, datasets, hyperparameters);

src/Platform/GridSearch.h

@@ -30,7 +30,6 @@ namespace platform {
         double processFile(std::string fileName, Datasets& datasets, HyperParameters& hyperparameters);
         json results;
         struct ConfigGrid config;
-        GridData grid;
     };
 } /* namespace platform */
 #endif /* GRIDSEARCH_H */