example_dmlfw_scale_double.c

Usage:

#include <stdio.h>
#include <stdlib.h>
#include <dmlfw_scale.h>
#include <dmlfw_vector.h>
#include <dmlfw_error.h>
 
int main(void) {
    char err[512], dbg[512];
 
    // Create a vector of column names to scale
    dmlfw_row_vec_string *columns_to_scale = dmlfw_row_vec_string_create_new(2);
    if (dmlfw_error()) {
        dmlfw_get_error_string(err, sizeof(err));
        dmlfw_get_debug_string(dbg, sizeof(dbg));
        printf("Error creating columns vector: %s\nDebug info: %s\n", err, dbg);
        return EXIT_FAILURE;
    }
    dmlfw_row_vec_string_set(columns_to_scale, 0, "feature1");
    dmlfw_row_vec_string_set(columns_to_scale, 1, "feature2");
 
    // Perform min-max scaling on dataset columns, save parameters to "params.json"
    dmlfw_mat_double *scaled_matrix = dmlfw_scale_double("input.csv", columns_to_scale, "params.json",
                                                        MLFW_MIN_MAX_SCALING_ALGORITHM, NULL);
    if (dmlfw_error()) {
        dmlfw_get_error_string(err, sizeof(err));
        dmlfw_get_debug_string(dbg, sizeof(dbg));
        printf("Scaling error: %s\nDebug info: %s\n", err, dbg);
        dmlfw_row_vec_string_destroy(columns_to_scale);
        return EXIT_FAILURE;
    }
 
    // Use scaled_matrix for further processing...
    printf("Scaling completed successfully.\n");
 
    // Cleanup
    dmlfw_mat_double_destroy(scaled_matrix);
    dmlfw_row_vec_string_destroy(columns_to_scale);
 
    return EXIT_SUCCESS;
}