void calculate_CH()
{
// Using algorithm from Baulik and Bandyopadhyay. See there for
// notation.
// First calculate centroid of entire dataset.
ProbabilitySequence* total_centroid = calc_median(fasta->array);
//display_prob(total_centroid, 10);
// Calculate TrB - trace of between cluster scatter matrix.
// k is index over clusters.
double TrB = 0.0;
for (guint k = 0; k < clusters->len; k++){
GArray* cluster = g_array_index(clusters, GArray*, k);
// Calculate centroid of cluster.
ProbabilitySequence* cluster_centroid = calc_median(cluster);
//display_prob(cluster_centroid, 10);
double dist = dist_pseq_pseq(cluster_centroid, total_centroid);
TrB += dist * dist * ((double) cluster->len);
}
g_print("TrB = %f\n", TrB);
// Calculate TrW - trace of within cluster scatter matrix.
double TrW = 0.0;
for (guint k = 0; k < clusters->len; k++){
GArray* cluster = g_array_index(clusters, GArray*, k);
// Calculate centroid of cluster.
ProbabilitySequence* cluster_centroid = calc_median(cluster);
for (guint i = 0; i < cluster->len; i++){
Sequence* seq = g_array_index(cluster, Sequence*, i);
double dist = dist_seq_pseq(seq, cluster_centroid);
TrW += dist*dist;
}
}
g_print("TrW = %f\n", TrW);
// K is number of clusters
double K = (double) clusters->len;
// n is total num of elements
double n = (double) fasta->array->len;
double CH = TrB * (n - K) / (K - 1) / TrW;
g_print("K = %f\n", K);
g_print("n = %f\n", n);
g_print("CH = %f\n", CH);
}
int main ()
{
int num_grades;
int* grades = get_grades (&num_grades);
float ave = calc_ave (num_grades, grades);
display_ave (num_grades, ave);
float median = calc_median(num_grades, grades);
display_median(num_grades, median);
float std_dev = calc_std_dev(num_grades, grades);
display_std_dev(num_grades, std_dev);
return 0;
}
//--------------------------------------------------------------
void testApp::draw(){
int n_value = ofMap(analog_value, 0, 1023, 0, 255);
ard.sendPwm(9, n_value);//0~255!!(analogWrite)
ofSetColor(0);
ofLine(ofGetWidth()/4, ofGetHeight()*2/3, ofGetWidth()*3/4, ofGetHeight()*2/3);
ofLine(ofGetWidth()/4, ofGetHeight()*2/3, ofGetWidth()/4, ofGetHeight()/3);
int x, y;
for (int i = 0; i < LENGTH; i++) {
cout << buffer[i] << endl;
x = ofGetWidth()/4 + (i * 10);
y = ofGetHeight()*2/3 - buffer[i];
data[i].x = x;
data[i].y = y;
}
calc_avarage(data);
calc_median(data);
for (int i = 1; i < LENGTH; i++) {
ofSetColor(0, 0, 255);
ofLine(data[i-1].x, data[i-1].y, data[i].x, data[i].y);
ofSetColor(255, 0, 0);
ofLine(data[i-1].x, avarage[i-1], data[i].x, avarage[i]);
ofSetColor(0, 255, 0);
ofLine(data[i-1].x, median[i-1], data[i].x, median[i]);
cout << median[i] << endl;
}
}
void calc_median_global(void *data_local, void *result, size_t n_data_local, SID_Datatype type, int mode, SID_Comm *comm) {
int i_mid;
double median;
size_t *index;
double value_1, value_2;
size_t n_data;
size_t index_1, index_2;
size_t *idx;
size_t i_lo, i_hi;
size_t index_lo, index_hi, index_mid;
size_t i_1, i_2;
int flag_1, flag_2;
int rank_1_local, rank_1, rank_2_local, rank_2;
#if USE_MPI
SID_exit_error("calc_median_global has not been implemented yet!", SID_ERROR_LOGIC);
/*
MPI_Allreduce(&n_data_local,&n_data,1,MPI_SIZE_T,MPI_SUM,MPI_COMM_WORLD);
if(n_data>0){
if(n_data>1){
sort(data_local,
n_data_local,
&index,
type,
GBP_FALSE,
GBP_TRUE,
GBP_FALSE);
index_1=n_data/2-1;
index_2=n_data/2;
sort(index,
n_data_local,
&idx,
SID_SIZE_T,
GBP_TRUE,
GBP_TRUE,
GBP_FALSE);
i_lo =0;
i_hi =n_data_local-1;
index_lo=index[idx[i_lo]];
index_hi=index[idx[i_hi]];
do{
i_mid =(i_lo+i_hi)/2;
index_mid=index[idx[i_mid]];
if(index_1<index_mid)
i_hi=i_mid;
else if(index_1>index_mid)
i_lo=i_mid;
else{
i_lo=i_mid;
i_hi=i_mid;
}
} while(i_hi-i_lo>2);
if(index_1==index[i_lo]){
i_1 =i_lo;
flag_1=GBP_TRUE;
}
else
flag_1=GBP_FALSE;
if(index_2==index[i_lo]){
i_2 =i_lo;
flag_2=GBP_TRUE;
}
else if(index_2==index[i_hi]){
i_2 =i_hi;
flag_2=GBP_TRUE;
}
else
flag_2=GBP_FALSE;
if(!(n_data%2)){
if(flag_1){
rank_1_local=SID.My_rank;
if(type==SID_DOUBLE)
value_1=((double *)data_local)[i_1];
else if(type==SID_FLOAT)
value_1=((float *)data_local)[i_1];
else if(type==SID_INT)
value_1=((int *)data_local)[i_1];
else if(type==SID_SIZE_T)
value_1=((size_t *)data_local)[i_1];
else
SID_trap_error("type not supported by calc_median_global.",SID_ERROR_LOGIC);
}
}
else
rank_1_local=-1;
MPI_Allreduce(&rank_1_local,&rank_1,1,MPI_INT,MPI_MAX,MPI_COMM_WORLD);
MPI_Bcast(&value_1,1,MPI_DOUBLE,rank_1,MPI_COMM_WORLD);
}
if(flag_2){
rank_2_local=SID.My_rank;
if(type==SID_DOUBLE)
value_2=((double *)data_local)[i_2];
else if(type==SID_FLOAT)
value_2=((float *)data_local)[i_2];
else if(type==SID_INT)
value_2=((int *)data_local)[i_2];
else if(type==SID_SIZE_T)
value_2=((size_t *)data_local)[i_2];
else
SID_trap_error("type not supported by calc_median_global.",SID_ERROR_LOGIC);
}
else
rank_2_local=-1;
MPI_Allreduce(&rank_2_local,&rank_2,1,MPI_INT,MPI_MAX,MPI_COMM_WORLD);
MPI_Bcast(&value_2,1,MPI_DOUBLE,rank_2,MPI_COMM_WORLD);
free(idx);
free(index);
if(n_data%2)
median=value_2;
else
median=ONE_HALF*(value_1+value_2);
}
else
if(type==SID_DOUBLE)
median=((double *)data_local)[0];
else if(type==SID_FLOAT)
median=((float *)data_local)[0];
else if(type==SID_INT)
median=((int *)data_local)[0];
else if(type==SID_SIZE_T)
median=((size_t *)data_local)[0];
else
SID_exit_error("type not supported by calc_median_global.",SID_ERROR_LOGIC);
}
else
median=0.;
*/
#else
calc_median(data_local, result, n_data_local, type, mode);
#endif
}
static void
client (int fd, const char* prio, unsigned int text_size, struct test_st *test)
{
int ret;
char buffer[MAX_BUF + 1];
char text[text_size];
gnutls_certificate_credentials_t x509_cred;
gnutls_session_t session;
struct timespec start, stop;
static unsigned long taken = 0;
static unsigned long measurement;
const char* err;
global_init ();
setpriority(PRIO_PROCESS, getpid(), -15);
memset(text, 0, text_size);
#ifdef DEBUG
gnutls_global_set_log_function (client_log_func);
gnutls_global_set_log_level (6);
#endif
gnutls_certificate_allocate_credentials (&x509_cred);
#ifdef REHANDSHAKE
restart:
#endif
/* Initialize TLS session
*/
gnutls_init (&session, GNUTLS_CLIENT);
gnutls_session_set_ptr(session, test);
cli_session = session;
/* Use default priorities */
if ((ret=gnutls_priority_set_direct (session, prio, &err)) < 0) {
fprintf(stderr, "Error in priority string %s: %s\n", gnutls_strerror(ret), err);
exit(1);
}
/* put the anonymous credentials to the current session
*/
gnutls_credentials_set (session, GNUTLS_CRD_CERTIFICATE, x509_cred);
gnutls_transport_set_ptr (session, (gnutls_transport_ptr_t) fd);
/* Perform the TLS handshake
*/
do
{
ret = gnutls_handshake (session);
}
while (ret < 0 && gnutls_error_is_fatal(ret) == 0);
if (ret < 0)
{
fprintf (stderr, "client: Handshake failed\n");
gnutls_perror (ret);
exit(1);
}
ret = gnutls_protocol_get_version(session);
if (ret < GNUTLS_TLS1_1)
{
fprintf (stderr, "client: Handshake didn't negotiate TLS 1.1 (or later)\n");
exit(1);
}
gnutls_transport_set_push_function (session, push_crippled);
#ifndef REHANDSHAKE
restart:
#endif
do {
ret = gnutls_record_send (session, text, sizeof(text));
} while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED);
/* measure peer's processing time */
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &start);
#define TLS_RECV
#ifdef TLS_RECV
do {
ret = gnutls_record_recv(session, buffer, sizeof(buffer));
} while(ret < 0 && (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED));
#else
do {
ret = recv(fd, buffer, sizeof(buffer), 0);
} while(ret == -1 && errno == EAGAIN);
#endif
if (taken < MAX_MEASUREMENTS(test->npoints) && ret > 0)
{
clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &stop);
taken++;
measurement = timespec_sub_ns(&stop, &start);
prev_point_ptr->measurements[prev_point_ptr->midx] = measurement;
/*fprintf(stderr, "(%u,%u): %lu\n", (unsigned) prev_point_ptr->byte1,
(unsigned) prev_point_ptr->byte2, measurements[taken]);*/
memcpy(&measurement, buffer, sizeof(measurement));
prev_point_ptr->smeasurements[prev_point_ptr->midx] = measurement;
prev_point_ptr->midx++;
/* read server's measurement */
#ifdef REHANDSHAKE
gnutls_deinit(session);
#endif
goto restart;
}
#ifndef TLS_RECV
else if (ret < 0)
{
fprintf(stderr, "Error in recv()\n");
exit(1);
}
#endif
gnutls_transport_set_push_function (session, push);
gnutls_bye (session, GNUTLS_SHUT_WR);
{
double avg2, med, savg, smed;
unsigned i;
FILE* fp = NULL;
if (test->file)
fp = fopen(test->file, "w");
if (fp) /* point, avg, median */
fprintf(fp, "Delta,TimeAvg,TimeMedian,ServerAvg,ServerMedian\n");
for (i=0;i<test->npoints;i++)
{
qsort( test->points[i].measurements, test->points[i].midx,
sizeof(test->points[i].measurements[0]), compar);
qsort( test->points[i].smeasurements, test->points[i].midx,
sizeof(test->points[i].smeasurements[0]), compar);
avg2 = calc_avg( test->points[i].measurements, test->points[i].midx);
/*var = calc_var( test->points[i].measurements, test->points[i].midx, avg2);*/
med = calc_median( test->points[i].measurements, test->points[i].midx);
savg = calc_avg( test->points[i].smeasurements, test->points[i].midx);
/*var = calc_var( test->points[i].measurements, test->points[i].midx, avg2);*/
smed = calc_median( test->points[i].smeasurements, test->points[i].midx);
/*min = calc_min( test->points[i].measurements, test->points[i].midx);*/
if (fp) /* point, avg, median */
fprintf(fp, "%u,%.2lf,%.2lf,%.2lf,%.2lf\n", (unsigned)test->points[i].byte1,
avg2,med,savg, smed);
/*printf("(%u) Avg: %.3f nanosec, Median: %.3f, Variance: %.3f\n", (unsigned)test->points[i].byte1,
avg2, med, var);*/
}
if (fp)
fclose(fp);
}
if (test->desc)
fprintf(stderr, "Description: %s\n", test->desc);
close (fd);
gnutls_deinit (session);
gnutls_certificate_free_credentials (x509_cred);
gnutls_global_deinit ();
}