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@ -1,61 +1,18 @@ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <sys/time.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <math.h> |
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#include <float.h> |
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#include <string.h> |
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#include "serial_declarations.h" |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <sys/time.h> |
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#include <stdbool.h> |
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extern int NUMBER_OF_POINTS; |
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extern int DIMENSIONS; |
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extern char* POINTS_FILENAME; |
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extern char* LABELS_FILENAME; |
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typedef struct parameters { |
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double epsilon; |
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bool verbose; |
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bool display; |
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} parameters; |
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//Function get_args parses command line arguments.
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void get_args(int argc, char **argv, int *h); |
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//Function meanshift recursively shifts original points according to th
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//mean-shift algorithm saving the result to shiftedPoints. Struct opt has user
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//options, h is the desirable deviation, iteration is this call's iteration
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//number.
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int meanshift(double **original_points, double ***shifted_points, int h |
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, parameters *opt, int iteration); |
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//Function norm returns the second norm of matrix of dimensions rowsXcols.
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double norm(double **matrix, int rows, int cols); |
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//Function multiply calculates the product of matrices 1 and 2 into output.
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void multiply(double **matrix1, double **matrix2, double **output); |
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//Function calculateDistance returns the distance between x and y vectors.
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double calculateDistance(double *y, double *x); |
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//Function alloc_2d_double allocates rows*cols bytes of continuous memory.
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double **alloc_2d_double(int rows, int cols); |
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//Function duplicate copies the values of source array to dest array.
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void duplicate(double **source, int rows, int cols, double ***dest); |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <sys/time.h> |
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//Function print_matrix prints array of dimensions rowsXcols to the console.
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void print_matrix(double **array, int rows, int cols); |
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//Function save_matrix prints matrix in a csv file with path/filename
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//"output/output_iteration". If a file already exists new lines are concatenated.
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void save_matrix(double **matrix |
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, int iteration); |
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int NUMBER_OF_POINTS = 600; |
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int DIMENSIONS = 2; |
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@ -65,64 +22,11 @@ char* LABELS_FILENAME = "data/L.bin"; |
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struct timeval startwtime, endwtime; |
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double seq_time; |
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int main(int argc, char **argv){ |
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int h = 1; |
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//get_args(argc, argv, &h); commented out while in development
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FILE *f; |
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// f = fopen(X, "rb");
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// fseek(f, 0L, SEEK_END);
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// long int pos = ftell(f);
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// fclose(f);
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// int elements = pos / sizeof(double); // number of total elements (points*dimension)
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// int points = elements/DIMENSIONS;
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// //printf("points : %d \n", points);
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f = fopen(POINTS_FILENAME, "rb"); |
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double **vectors; |
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vectors = alloc_2d_double(NUMBER_OF_POINTS, DIMENSIONS); |
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for (int i=0; i<NUMBER_OF_POINTS; i++){ |
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int out = fread(vectors[i], sizeof(double), DIMENSIONS, f); |
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} |
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save_matrix(vectors, 0); |
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// initializing file that will contain the labels (train)
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f = fopen(LABELS_FILENAME, "rb"); |
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// NOTE : Labels were classified as <class 'numpy.uint8'>
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// variables of type uint8 are stored as 1-byte (8-bit) unsigned integers
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fseek(f, 0L, SEEK_END); |
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long int pos = ftell(f); |
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rewind(f); |
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//printf("position : %ld \n", pos);
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int label_elements = pos/ sizeof(char); |
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char *labels = (char*)malloc(label_elements* sizeof(char)); |
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fseek(f, 0L, SEEK_SET); |
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int out = fread(labels, sizeof(char), label_elements, f); |
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fclose(f); |
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// MEAN SHIFT OPTIONS
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parameters params; |
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params.epsilon = 0.0001; |
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params.verbose = false; |
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params.display = false; |
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parameters *opt; |
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opt = ¶ms; |
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double **shifted_points; |
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// tic
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gettimeofday (&startwtime, NULL); |
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int iterations = meanshift(vectors, &shifted_points, h, opt, 1); |
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// toc
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gettimeofday (&endwtime, NULL); |
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seq_time = (double)((endwtime.tv_usec - startwtime.tv_usec)/1.0e6 + endwtime.tv_sec - startwtime.tv_sec); |
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printf("%s wall clock time = %f\n","Mean Shift", seq_time); |
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//TODO write output points to file -> plot later
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//save_matrix(shifted_points, iterations);
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} |
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typedef struct parameters { |
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double epsilon; |
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bool verbose; |
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bool display; |
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} parameters; |
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void get_args(int argc, char **argv, int *h){ |
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if (argc != 6) { |
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@ -142,6 +46,84 @@ void get_args(int argc, char **argv, int *h){ |
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LABELS_FILENAME = argv[5]; |
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} |
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// TODO check why there's is a difference in the norm calculate in matlab
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double norm(double **matrix, int rows, int cols){ |
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double sum=0, temp_mul=0; |
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for (int i=0; i<rows; i++) { |
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for (int j=0; j<cols; j++) { |
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temp_mul = matrix[i][j] * matrix[i][j]; |
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sum = sum + temp_mul; |
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} |
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} |
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double norm = sqrt(sum); |
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return norm; |
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} |
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void multiply(double **matrix1, double **matrix2, double **output){ |
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// W dims are NUMBER_OF_POINTS NUMBER_OF_POINTS
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// and x dims are NUMBER_OF_POINTS DIMENSIONS
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for (int i=0; i<NUMBER_OF_POINTS; i++){ |
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for (int j=0; j<DIMENSIONS; j++){ |
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output[i][j] = 0; |
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for (int k=0; k<NUMBER_OF_POINTS; k++){ |
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output[i][j] += matrix1[i][k] * matrix2[k][j]; |
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} |
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} |
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} |
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} |
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double calculateDistance(double *y, double *x){ |
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double sum = 0, dif; |
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for (int i=0; i<DIMENSIONS; i++){ |
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dif = y[i]-x[i]; |
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sum += dif * dif; |
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} |
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double distance = sqrt(sum); |
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return distance; |
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} |
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double **alloc_2d_double(int rows, int cols) { |
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double *data = (double *) malloc(rows*cols*sizeof(double)); |
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double **array = (double **) malloc(rows*sizeof(double*)); |
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for (int i=0; i<rows; i++) |
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array[i] = &(data[cols*i]); |
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return array; |
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} |
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void duplicate(double **source, int rows, int cols, double ***dest){ |
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for (int i=0; i<rows; i++){ |
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for (int j=0; j<cols; j++){ |
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(*dest)[i][j] = source[i][j]; |
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} |
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} |
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} |
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void print_matrix(double **array, int rows, int cols){ |
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for (int i=0; i<cols; i++){ |
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for (int j=0; j<rows; j++){ |
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printf("%f ", array[j][i]); |
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} |
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printf("\n"); |
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} |
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} |
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void save_matrix(double **matrix, int iteration){ |
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char filename[18]; |
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snprintf(filename, sizeof(filename), "%s%d", "output/output_", iteration); |
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FILE *file; |
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file = fopen(filename, "w"); |
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for (int rows=0; rows<NUMBER_OF_POINTS; ++rows){ |
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for (int cols=0; cols<DIMENSIONS; ++cols){ |
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fprintf(file, "%f", matrix[rows][cols]); |
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if (cols != DIMENSIONS - 1){ |
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fprintf(file, ","); |
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} |
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} |
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fprintf(file, "\n"); |
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} |
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} |
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int meanshift(double **original_points, double ***shifted_points, int h |
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, parameters *opt, int iteration){ |
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@ -169,8 +151,16 @@ int meanshift(double **original_points, double ***shifted_points, int h |
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for (int i=0; i<NUMBER_OF_POINTS; i++){ |
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double sum = 0; |
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for (int j=0; j<NUMBER_OF_POINTS; j++){ |
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double dist = calculateDistance((*shifted_points)[i] |
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, original_points[j]); |
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// double dist = calculateDistance((*shifted_points)[i]
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// , original_points[j]);
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double dif; |
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double sum=0; |
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for (int k=0; k<DIMENSIONS; k++){ |
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printf("%f, %f \n",(*shifted_points)[i][k], original_points[i][k]); |
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dif = (*shifted_points)[i][k]-original_points[i][k]; |
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sum += dif * dif; |
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} |
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double dist = sqrt(sum); |
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if (i == j){ |
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kernel_matrix[i][j] = 1; |
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@ -225,81 +215,63 @@ int meanshift(double **original_points, double ***shifted_points, int h |
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return iteration; |
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} |
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// TODO check why there's is a difference in the norm calculate in matlab
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double norm(double **matrix, int rows, int cols){ |
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double sum=0, temp_mul=0; |
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for (int i=0; i<rows; i++) { |
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for (int j=0; j<cols; j++) { |
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temp_mul = matrix[i][j] * matrix[i][j]; |
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sum = sum + temp_mul; |
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} |
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} |
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double norm = sqrt(sum); |
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return norm; |
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} |
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void multiply(double **matrix1, double **matrix2, double **output){ |
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// W dims are NUMBER_OF_POINTS NUMBER_OF_POINTS
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// and x dims are NUMBER_OF_POINTS DIMENSIONS
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int main(int argc, char **argv){ |
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int h = 1; |
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//get_args(argc, argv, &h); commented out while in development
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FILE *f; |
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// f = fopen(X, "rb");
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// fseek(f, 0L, SEEK_END);
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// long int pos = ftell(f);
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// fclose(f);
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// int elements = pos / sizeof(double); // number of total elements (points*dimension)
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// int points = elements/DIMENSIONS;
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// //printf("points : %d \n", points);
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f = fopen(POINTS_FILENAME, "rb"); |
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double **vectors; |
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vectors = alloc_2d_double(NUMBER_OF_POINTS, DIMENSIONS); |
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for (int i=0; i<NUMBER_OF_POINTS; i++){ |
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for (int j=0; j<DIMENSIONS; j++){ |
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output[i][j] = 0; |
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for (int k=0; k<NUMBER_OF_POINTS; k++){ |
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output[i][j] += matrix1[i][k] * matrix2[k][j]; |
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} |
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} |
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} |
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int out = fread(vectors[i], sizeof(double), DIMENSIONS, f); |
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} |
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double calculateDistance(double *y, double *x){ |
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double sum = 0, dif; |
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for (int i=0; i<DIMENSIONS; i++){ |
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dif = y[i]-x[i]; |
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sum += dif * dif; |
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} |
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double distance = sqrt(sum); |
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return distance; |
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} |
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save_matrix(vectors, 0); |
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double **alloc_2d_double(int rows, int cols) { |
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double *data = (double *) malloc(rows*cols*sizeof(double)); |
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double **array = (double **) malloc(rows*sizeof(double*)); |
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for (int i=0; i<rows; i++) |
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array[i] = &(data[cols*i]); |
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return array; |
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} |
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// initializing file that will contain the labels (train)
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f = fopen(LABELS_FILENAME, "rb"); |
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// NOTE : Labels were classified as <class 'numpy.uint8'>
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// variables of type uint8 are stored as 1-byte (8-bit) unsigned integers
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fseek(f, 0L, SEEK_END); |
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long int pos = ftell(f); |
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rewind(f); |
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//printf("position : %ld \n", pos);
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int label_elements = pos/ sizeof(char); |
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char *labels = (char*)malloc(label_elements* sizeof(char)); |
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fseek(f, 0L, SEEK_SET); |
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int out = fread(labels, sizeof(char), label_elements, f); |
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fclose(f); |
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void duplicate(double **source, int rows, int cols, double ***dest){ |
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for (int i=0; i<rows; i++){ |
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for (int j=0; j<cols; j++){ |
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(*dest)[i][j] = source[i][j]; |
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} |
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} |
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} |
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// MEAN SHIFT OPTIONS
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parameters params; |
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params.epsilon = 0.0001; |
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params.verbose = false; |
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params.display = false; |
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parameters *opt; |
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opt = ¶ms; |
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void print_matrix(double **array, int rows, int cols){ |
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for (int i=0; i<cols; i++){ |
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for (int j=0; j<rows; j++){ |
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printf("%f ", array[j][i]); |
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} |
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printf("\n"); |
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} |
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} |
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double **shifted_points; |
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// tic
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gettimeofday (&startwtime, NULL); |
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void save_matrix(double **matrix, int iteration){ |
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char filename[18]; |
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snprintf(filename, sizeof(filename), "%s%d", "output/output_", iteration); |
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FILE *file; |
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file = fopen(filename, "w"); |
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for (int rows=0; rows<NUMBER_OF_POINTS; ++rows){ |
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for (int cols=0; cols<DIMENSIONS; ++cols){ |
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fprintf(file, "%f", matrix[rows][cols]); |
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if (cols != DIMENSIONS - 1){ |
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fprintf(file, ","); |
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} |
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} |
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fprintf(file, "\n"); |
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} |
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} |
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int iterations = meanshift(vectors, &shifted_points, h, opt, 1); |
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// toc
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gettimeofday (&endwtime, NULL); |
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seq_time = (double)((endwtime.tv_usec - startwtime.tv_usec)/1.0e6 + endwtime.tv_sec - startwtime.tv_sec); |
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printf("%s wall clock time = %f\n","Mean Shift", seq_time); |
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//TODO write output points to file -> plot later
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//save_matrix(shifted_points, iterations);
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} |