From 73dbb0343a895345a80d49da9d48edac8858e87a Mon Sep 17 00:00:00 2001
From: philblunsom <philblunsom@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Mon, 19 Jul 2010 18:33:29 +0000
Subject: Vaguely working distributed implementation. Hierarchical topics
 doesn't yet work correctly.

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@317 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 gi/pyp-topics/src/pyp.hh | 45 +++++++++++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 16 deletions(-)

(limited to 'gi/pyp-topics/src/pyp.hh')

diff --git a/gi/pyp-topics/src/pyp.hh b/gi/pyp-topics/src/pyp.hh
index 84decb0f..19cd6be8 100644
--- a/gi/pyp-topics/src/pyp.hh
+++ b/gi/pyp-topics/src/pyp.hh
@@ -71,9 +71,12 @@ public:
   static double log_prior_a(double a, double beta_a, double beta_b);
   static double log_prior_b(double b, double gamma_c, double gamma_s);
 
-  void resample_prior();
-  void resample_prior_a();
-  void resample_prior_b();
+  template <typename Uniform01>
+    void resample_prior(Uniform01& rnd);
+  template <typename Uniform01>
+    void resample_prior_a(Uniform01& rnd);
+  template <typename Uniform01>
+    void resample_prior_b(Uniform01& rnd);
 
 protected:
   double _a, _b; // parameters of the Pitman-Yor distribution
@@ -402,13 +405,18 @@ PYP<Dish,Hash>::debug_info(std::ostream& os) const
     hists += dtit->second.table_histogram.size();
     tables += dtit->second.tables;
 
+//    if (dtit->second.tables <= 0)
+//      std::cerr << dtit->first << " " << count(dtit->first) << std::endl;
     assert(dtit->second.tables > 0);
     assert(!dtit->second.table_histogram.empty());
 
+//    os << "Dish " << dtit->first << " has " << count(dtit->first) << " customers, and is sitting at " << dtit->second.tables << " tables.\n"; 
     for (std::map<int,int>::const_iterator 
          hit = dtit->second.table_histogram.begin();
-         hit != dtit->second.table_histogram.end(); ++hit)
+         hit != dtit->second.table_histogram.end(); ++hit) {
+//      os << "    " << hit->second << " tables with " << hit->first << " customers." << std::endl; 
       assert(hit->second > 0);
+    }
   }
 
   os << "restaurant has " 
@@ -510,41 +518,46 @@ long double PYP<Dish,Hash>::lgammadist(long double x, long double alpha, long do
 
 
 template <typename Dish, typename Hash>
+  template <typename Uniform01>
 void 
-PYP<Dish,Hash>::resample_prior() {
+PYP<Dish,Hash>::resample_prior(Uniform01& rnd) {
   for (int num_its=5; num_its >= 0; --num_its) {
-    resample_prior_b();
-    resample_prior_a();
+    resample_prior_b(rnd);
+    resample_prior_a(rnd);
   }
-  resample_prior_b();
+  resample_prior_b(rnd);
 }
 
 template <typename Dish, typename Hash>
+  template <typename Uniform01>
 void 
-PYP<Dish,Hash>::resample_prior_b() {
+PYP<Dish,Hash>::resample_prior_b(Uniform01& rnd) {
   if (_total_tables == 0) 
     return;
 
-  int niterations = 10;   // number of resampling iterations
+  //int niterations = 10;   // number of resampling iterations
+  int niterations = 5;   // number of resampling iterations
   //std::cerr << "\n## resample_prior_b(), initial a = " << _a << ", b = " << _b << std::endl;
   resample_b_type b_log_prob(_total_customers, _total_tables, _a, _b_gamma_c, _b_gamma_s);
-  //_b = slice_sampler1d(b_log_prob, _b, rnd, (double) 0.0, std::numeric_limits<double>::infinity(), 
-  _b = slice_sampler1d(b_log_prob, _b, mt_genrand_res53, (double) 0.0, std::numeric_limits<double>::infinity(), 
+  _b = slice_sampler1d(b_log_prob, _b, rnd, (double) 0.0, std::numeric_limits<double>::infinity(), 
+  //_b = slice_sampler1d(b_log_prob, _b, mt_genrand_res53, (double) 0.0, std::numeric_limits<double>::infinity(), 
                        (double) 0.0, niterations, 100*niterations);
   //std::cerr << "\n## resample_prior_b(), final a = " << _a << ", b = " << _b << std::endl;
 }
 
 template <typename Dish, typename Hash>
+  template <typename Uniform01>
 void 
-PYP<Dish,Hash>::resample_prior_a() {
+PYP<Dish,Hash>::resample_prior_a(Uniform01& rnd) {
   if (_total_tables == 0) 
     return;
 
-  int niterations = 10;
+  //int niterations = 10;
+  int niterations = 5;
   //std::cerr << "\n## Initial a = " << _a << ", b = " << _b << std::endl;
   resample_a_type a_log_prob(_total_customers, _total_tables, _b, _a_beta_a, _a_beta_b, _dish_tables);
-  //_a = slice_sampler1d(a_log_prob, _a, rnd, std::numeric_limits<double>::min(), 
-  _a = slice_sampler1d(a_log_prob, _a, mt_genrand_res53, std::numeric_limits<double>::min(), 
+  _a = slice_sampler1d(a_log_prob, _a, rnd, std::numeric_limits<double>::min(), 
+  //_a = slice_sampler1d(a_log_prob, _a, mt_genrand_res53, std::numeric_limits<double>::min(), 
                        (double) 1.0, (double) 0.0, niterations, 100*niterations);
 }
 
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