void parse1(){
unsigned int i;
expr e;
double x;
e = parse("x^2+1");
for(i = 0; i<1000; i++){
x = random_();
ASSERT_SIM(eval(e, x, 0), f1(x));
}
e = parse("sin(x)^4");
for(i = 0; i<1000; i++){
x = random_();
ASSERT_SIM(eval(e, x, 0), f2(x));
}
e = parse("2^(sin(x)^2)");
for(i = 0; i<1000; i++){
x = random_();
ASSERT_SIM(eval(e, x, 0), f3(x));
}
e = parse("(x-2)^2 + 1");
for(i = 0; i<1000; i++){
x = random_();
ASSERT_SIM(eval(e, x, 0), f4(x));
}
}
double likelihood_z(int s_id, int q_id) {
double s_id_sample = 0;
double q_id_sample = 0;
double sum_new = 0;
for (int i=0; i<o.size(); i++) {
double s_ = s[o[i].get_sid()].last();
double q_ = q[o[i].get_qid()].last();
if (o[i].get_sid() == s_id) {
s_ = s[s_id].sample();
s_id_sample = s_;
}
if (o[i].get_qid() == q_id) {
q_ = q[q_id].sample();
q_id_sample = q_;
}
sum_new -= (log(1 + exp(-(s_-q_))) + (1-o[i].get_response())*(s_-q_));
sum_new -= 0.5*s_*s_;
sum_new -= 0.5*q_*q_;
}
double sum_old = 0;
for (int i=0; i<o.size(); i++) {
double s_ = s[o[i].get_sid()].last();
double q_ = q[o[i].get_qid()].last();
sum_old -= (log(1 + exp(-(s_-q_))) + (1-o[i].get_response())*(s_-q_));
sum_old -= 0.5*s_*s_;
sum_old -= 0.5*q_*q_;
}
double r = exp(sum_new - sum_old);
if (random_(0, 1) < r) {
for (int i=0; i<s.size(); i++) {
if (i==s_id)
s[i].insert(s_id_sample);
else
s[i].insert(s[i].last());
}
for (int i=0; i<q.size(); i++) {
if (i==q_id)
q[i].insert(q_id_sample);
else
q[i].insert(q[i].last());
}
}
else {
for (int i=0; i<s.size(); i++) {
s[i].insert(s[i].last());
}
for (int i=0; i<q.size(); i++) {
q[i].insert(q[i].last());
}
}
}
void generate_random_clusters( const std::vector<sample_type>& samples)
{
typedef boost::variate_generator<boost::mt19937&, boost::uniform_int<> > random_type;
random_type random_( random_generator_, boost::uniform_int<>(0, samples.size() - 1));
for( int i = 0; i < K_; ++i)
{
while( 1)
{
int indx = random_();
if( labels_[indx] == 0)
{
clusters_.push_back( cluster_t( samples[indx]));
labels_[indx] = &(clusters_.back());
break;
}
}
}
}
std::tuple<Move, Value>
AperyBook::probe(const Position &pos, const std::string &fname, bool pick_best)
{
AperyBookEntry entry;
uint16_t best = 0;
uint32_t sum = 0;
Move move = kMoveNone;
Key key = book_key(pos);
Value min_book_score = static_cast<Value>(static_cast<int>(Options["Min_Book_Score"]));
Value score = kValueZero;
if (file_name_ != fname && !open(fname.c_str()))
return std::make_tuple(kMoveNone, kValueZero);
binary_search(key);
while (read(reinterpret_cast<char*>(&entry), sizeof(entry)), entry.key == key && good())
{
best = std::max(best, entry.count);
sum += entry.count;
if
(
min_book_score <= entry.score
&&
(
(random_() % sum < entry.count)
||
(pick_best && entry.count == best)
)
)
{
Square to = to_square(entry.from_to_pro & 0x007fU);
int from_raw = (entry.from_to_pro >> 7) & 0x007fU;
if (from_raw >= kBoardSquare)
{
move = move_init(to, to_drop_piece_type(static_cast<Square>(from_raw)));
}
else
{
Square from = to_square(from_raw);
PieceType pt_from = type_of(pos.square(from));
if (entry.from_to_pro & kPromoted)
move = move_init(from, to, pt_from, type_of(pos.square(to)), true);
else
move = move_init(from, to, pt_from, type_of(pos.square(to)), false);
}
score = entry.score;
}
}
/* Subroutine */ int bsynz_(real *coef, integer *ip, integer *iv,
real *sout, real *rms, real *ratio, real *g2pass,
struct lpc10_decoder_state *st)
{
/* Initialized data */
integer *ipo;
real *rmso;
static integer kexc[25] = { 8,-16,26,-48,86,-162,294,-502,718,-728,184,
672,-610,-672,184,728,718,502,294,162,86,48,26,16,8 };
real *exc;
real *exc2;
real *lpi1;
real *lpi2;
real *lpi3;
real *hpi1;
real *hpi2;
real *hpi3;
/* System generated locals */
integer i__1, i__2;
real r__1, r__2;
/* Builtin functions */
double sqrt(doublereal);
/* Local variables */
real gain, xssq;
integer i__, j, k;
real noise[166], pulse;
integer px;
real sscale;
extern integer random_(struct lpc10_decoder_state *);
real xy, sum, ssq;
real lpi0, hpi0;
/* $Log: bsynz.c,v $
/* Revision 1.1 2007/10/22 07:40:49 shorne
/* *** empty log message ***
/*
/* Revision 1.2 2006/08/01 13:06:49 rjongbloed
/* Added a raft of unvalidated audio codecs from OpenH323 tree
/*
/* Revision 1.1.2.1 2006/07/22 14:03:14 rjongbloed
/* Added more plug ins
/*
/* Revision 1.1.2.1 2006/05/08 13:49:57 rjongbloed
/* Imported all the audio codec plug ins from OpenH323
/*
/* Revision 1.1 2004/05/04 11:16:42 csoutheren
/* Initial version
/*
/* Revision 1.2 2002/02/15 03:57:55 yurik
/* Warnings removed during compilation, patch courtesy of Jehan Bing, [email protected]
/*
/* Revision 1.1 2000/06/05 04:45:12 robertj
/* Added LPC-10 2400bps codec
/*
* Revision 1.2 1996/08/20 20:18:55 jaf
* Removed all static local variables that were SAVE'd in the Fortran
* code, and put them in struct lpc10_decoder_state that is passed as an
* argument.
*
* Removed init function, since all initialization is now done in
* init_lpc10_decoder_state().
*
* Revision 1.1 1996/08/19 22:32:58 jaf
* Initial revision
* */
/* Revision 1.3 1996/03/29 22:03:47 jaf */
/* Removed definitions for any constants that were no longer used. */
/* Revision 1.2 1996/03/26 19:34:33 jaf */
/* Added comments indicating which constants are not needed in an */
/* application that uses the LPC-10 coder. */
/* Revision 1.1 1996/02/07 14:43:51 jaf */
/* Initial revision */
/* LPC Configuration parameters: */
/* Frame size, Prediction order, Pitch period */
/* Arguments */
/* $Log: bsynz.c,v $
/* Revision 1.1 2007/10/22 07:40:49 shorne
/* *** empty log message ***
/*
/* Revision 1.2 2006/08/01 13:06:49 rjongbloed
/* Added a raft of unvalidated audio codecs from OpenH323 tree
/*
/* Revision 1.1.2.1 2006/07/22 14:03:14 rjongbloed
/* Added more plug ins
/*
/* Revision 1.1.2.1 2006/05/08 13:49:57 rjongbloed
/* Imported all the audio codec plug ins from OpenH323
/*
/* Revision 1.1 2004/05/04 11:16:42 csoutheren
/* Initial version
/*
/* Revision 1.2 2002/02/15 03:57:55 yurik
/* Warnings removed during compilation, patch courtesy of Jehan Bing, [email protected]
/*
/* Revision 1.1 2000/06/05 04:45:12 robertj
/* Added LPC-10 2400bps codec
/*
* Revision 1.2 1996/08/20 20:18:55 jaf
* Removed all static local variables that were SAVE'd in the Fortran
* code, and put them in struct lpc10_decoder_state that is passed as an
* argument.
*
* Removed init function, since all initialization is now done in
* init_lpc10_decoder_state().
*
* Revision 1.1 1996/08/19 22:32:58 jaf
* Initial revision
* */
/* Revision 1.3 1996/03/29 22:05:55 jaf */
/* Commented out the common block variables that are not needed by the */
/* embedded version. */
/* Revision 1.2 1996/03/26 19:34:50 jaf */
/* Added comments indicating which constants are not needed in an */
/* application that uses the LPC-10 coder. */
/* Revision 1.1 1996/02/07 14:44:09 jaf */
/* Initial revision */
/* LPC Processing control variables: */
/* *** Read-only: initialized in setup */
/* Files for Speech, Parameter, and Bitstream Input & Output, */
/* and message and debug outputs. */
/* Here are the only files which use these variables: */
/* lpcsim.f setup.f trans.f error.f vqsetup.f */
/* Many files which use fdebug are not listed, since it is only used in */
/* those other files conditionally, to print trace statements. */
/* integer fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/* LPC order, Frame size, Quantization rate, Bits per frame, */
/* Error correction */
/* Subroutine SETUP is the only place where order is assigned a value, */
/* and that value is 10. It could increase efficiency 1% or so to */
/* declare order as a constant (i.e., a Fortran PARAMETER) instead of as
*/
/* a variable in a COMMON block, since it is used in many places in the */
/* core of the coding and decoding routines. Actually, I take that back.
*/
/* At least when compiling with f2c, the upper bound of DO loops is */
/* stored in a local variable before the DO loop begins, and then that is
*/
/* compared against on each iteration. */
/* Similarly for lframe, which is given a value of MAXFRM in SETUP. */
/* Similarly for quant, which is given a value of 2400 in SETUP. quant */
/* is used in only a few places, and never in the core coding and */
/* decoding routines, so it could be eliminated entirely. */
/* nbits is similar to quant, and is given a value of 54 in SETUP. */
/* corrp is given a value of .TRUE. in SETUP, and is only used in the */
/* subroutines ENCODE and DECODE. It doesn't affect the speed of the */
/* coder significantly whether it is .TRUE. or .FALSE., or whether it is
*/
/* a constant or a variable, since it is only examined once per frame. */
/* Leaving it as a variable that is set to .TRUE. seems like a good */
/* idea, since it does enable some error-correction capability for */
/* unvoiced frames, with no change in the coding rate, and no noticeable
*/
/* quality difference in the decoded speech. */
/* integer quant, nbits */
/* *** Read/write: variables for debugging, not needed for LPC algorithm
*/
/* Current frame, Unstable frames, Output clip count, Max onset buffer,
*/
/* Debug listing detail level, Line count on listing page */
/* nframe is not needed for an embedded LPC10 at all. */
/* nunsfm is initialized to 0 in SETUP, and incremented in subroutine */
/* ERROR, which is only called from RCCHK. When LPC10 is embedded into */
/* an application, I would recommend removing the call to ERROR in RCCHK,
*/
/* and remove ERROR and nunsfm completely. */
/* iclip is initialized to 0 in SETUP, and incremented in entry SWRITE in
*/
/* sread.f. When LPC10 is embedded into an application, one might want */
/* to cause it to be incremented in a routine that takes the output of */
/* SYNTHS and sends it to an audio device. It could be optionally */
/* displayed, for those that might want to know what it is. */
/* maxosp is never initialized to 0 in SETUP, although it probably should
*/
/* be, and it is updated in subroutine ANALYS. I doubt that its value */
/* would be of much interest to an application in which LPC10 is */
/* embedded. */
/* listl and lincnt are not needed for an embedded LPC10 at all. */
/* integer nframe, nunsfm, iclip, maxosp, listl, lincnt */
/* common /contrl/ fsi, fso, fpi, fpo, fbi, fbo, pbin, fmsg, fdebug */
/* common /contrl/ quant, nbits */
/* common /contrl/ nframe, nunsfm, iclip, maxosp, listl, lincnt */
/* Function return value definitions */
/* Parameters/constants */
/* KEXC is not a Fortran PARAMETER, but it is an array initialized
*/
/* with a DATA statement that is never modified. */
/* Local variables that need not be saved */
/* NOISE is declared with range (1:MAXPIT+MAXORD), but only indices
*/
/* ORDER+1 through ORDER+IP are ever used, and I think that IP */
/* .LE. MAXPIT. Why not declare it to be in the range (1:MAXPIT) */
/* and use that range? */
/* Local state */
/* I believe that only indices 1 through ORDER of EXC need to be */
/* saved from one invocation to the next, but we may as well save */
/* the whole array. */
/* None of these local variables were given initial values in the */
/* original code. I'm guessing that 0 is a reasonable initial */
/* value for all of them. */
/* Parameter adjustments */
if (coef) {
--coef;
}
if (sout) {
--sout;
}
/* Function Body */
ipo = &(st->ipo);
exc = &(st->exc[0]);
exc2 = &(st->exc2[0]);
lpi1 = &(st->lpi1);
lpi2 = &(st->lpi2);
lpi3 = &(st->lpi3);
hpi1 = &(st->hpi1);
hpi2 = &(st->hpi2);
hpi3 = &(st->hpi3);
rmso = &(st->rmso_bsynz);
/* MAXPIT+MAXORD=166 */
/* Calculate history scale factor XY and scale filter state */
/* Computing MIN */
r__1 = *rmso / (*rms + 1e-6f);
xy = min(r__1,8.f);
*rmso = *rms;
i__1 = contrl_1.order;
for (i__ = 1; i__ <= i__1; ++i__) {
exc2[i__ - 1] = exc2[*ipo + i__ - 1] * xy;
}
*ipo = *ip;
if (*iv == 0) {
/* Generate white noise for unvoiced */
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
exc[contrl_1.order + i__ - 1] = (real) (random_(st) / 64);
}
/* Impulse doublet excitation for plosives */
/* (RANDOM()+32768) is in the range 0 to 2**16-1. Therefore the
*/
/* following expression should be evaluated using integers with
at */
/* least 32 bits (16 isn't enough), and PX should be in the rang
e */
/* ORDER+1+0 through ORDER+1+(IP-2) .EQ. ORDER+IP-1. */
px = (random_(st) + 32768) * (*ip - 1) / 65536 + contrl_1.order + 1;
r__1 = *ratio / 4 * 1.f;
pulse = r__1 * 342;
if (pulse > 2e3f) {
pulse = 2e3f;
}
exc[px - 1] += pulse;
exc[px] -= pulse;
/* Load voiced excitation */
} else {
sscale = (real)sqrt((real) (*ip)) / 6.928f;
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
exc[contrl_1.order + i__ - 1] = 0.f;
if (i__ <= 25) {
exc[contrl_1.order + i__ - 1] = sscale * kexc[i__ - 1];
}
lpi0 = exc[contrl_1.order + i__ - 1];
r__2 = exc[contrl_1.order + i__ - 1] * .125f + *lpi1 * .75f;
r__1 = r__2 + *lpi2 * .125f;
exc[contrl_1.order + i__ - 1] = r__1 + *lpi3 * 0.f;
*lpi3 = *lpi2;
*lpi2 = *lpi1;
*lpi1 = lpi0;
}
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
noise[contrl_1.order + i__ - 1] = random_(st) * 1.f / 64;
hpi0 = noise[contrl_1.order + i__ - 1];
r__2 = noise[contrl_1.order + i__ - 1] * -.125f + *hpi1 * .25f;
r__1 = r__2 + *hpi2 * -.125f;
noise[contrl_1.order + i__ - 1] = r__1 + *hpi3 * 0.f;
*hpi3 = *hpi2;
*hpi2 = *hpi1;
*hpi1 = hpi0;
}
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
exc[contrl_1.order + i__ - 1] += noise[contrl_1.order + i__ - 1];
}
}
/* Synthesis filters: */
/* Modify the excitation with all-zero filter 1 + G*SUM */
xssq = 0.f;
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
k = contrl_1.order + i__;
sum = 0.f;
i__2 = contrl_1.order;
for (j = 1; j <= i__2; ++j) {
sum += coef[j] * exc[k - j - 1];
}
sum *= *g2pass;
exc2[k - 1] = sum + exc[k - 1];
}
/* Synthesize using the all pole filter 1 / (1 - SUM) */
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
k = contrl_1.order + i__;
sum = 0.f;
i__2 = contrl_1.order;
for (j = 1; j <= i__2; ++j) {
sum += coef[j] * exc2[k - j - 1];
}
exc2[k - 1] = sum + exc2[k - 1];
xssq += exc2[k - 1] * exc2[k - 1];
}
/* Save filter history for next epoch */
i__1 = contrl_1.order;
for (i__ = 1; i__ <= i__1; ++i__) {
exc[i__ - 1] = exc[*ip + i__ - 1];
exc2[i__ - 1] = exc2[*ip + i__ - 1];
}
/* Apply gain to match RMS */
r__1 = *rms * *rms;
ssq = r__1 * *ip;
gain = (real)sqrt(ssq / xssq);
i__1 = *ip;
for (i__ = 1; i__ <= i__1; ++i__) {
sout[i__] = gain * exc2[contrl_1.order + i__ - 1];
}
return 0;
} /* bsynz_ */
int main()
{
const int n_steps = 20000;
const int n_burn = 4000;
std::cout << "Students, Questions, Errors, Confidence " << std::endl;
for (int n_students=10; n_students<11; n_students++) {
for (int n_questions=5; n_questions<20; n_questions++) {
s.clear();
q.clear();
o.clear();
for (int i=0; i<n_students; i++) {
Normal norm;
norm.set_params(random_(0, 5), 0.1);
s.push_back(norm);
}
for (int i=0; i<n_questions; i++) {
Normal norm;
norm.set_params(random_(0, 5), 0.1);
q.push_back(norm);
}
for (int i=0; i<n_students; i++) {
for (int j=0; j<n_questions; j++) {
Observation obs;
if (s[i].last() > q[j].last())
obs.set(i, j, 1);
else
obs.set(i, j, 0);
o.push_back(obs);
}
}
Gibbs h;
h.run(n_steps, n_burn);
int error_sum = 0;
for (int i=0; i<o.size(); i++) {
double proficiency = s[o[i].get_sid()].mean();
double hardness = q[o[i].get_qid()].mean();
if (proficiency > hardness && o[i].get_response() == 0)
error_sum++;
if (proficiency < hardness && o[i].get_response() == 1)
error_sum++;
}
double var = 0;
for (int i=0; i<s.size(); i++) {
var += (1.0/s[i].mean_variance());
}
for (int i=0; i<q.size(); i++) {
var += (1.0/q[i].mean_variance());
}
var = sqrt(1.0/var);
std::cout << n_students << ", ";
std::cout << n_questions << ", ";
std::cout << error_sum << ", ";
std::cout << var << std::endl;
} // n_questions
} // n_students
}
int Random::sampleU(int max) {
return random_() % (max + 1);
}
int Random::sampleU(int min, int max) {
return random_() % (max - min + 1) + min;
}
double Random::sampleU(double min, double max) {
return (double)random_()/random_.max() * (max - min) + min;
}
double Random::sampleU(double max) {
return (double)random_()/random_.max() * max;
}
unsigned int operator()(unsigned int N) {
return static_cast<unsigned int>(N * random_());
}
void GetArray( boost::array<T, N>& array ) {
for( size_t i = 0; i < N; ++i ) {
array[i] = static_cast<T>( random_() );
}
}
typename Distribution::result_type operator()() { return random_(); }