From 925087356b853e2099c1b60d8b757d7aa02121a9 Mon Sep 17 00:00:00 2001
From: Chris Dyer <cdyer@cab.ark.cs.cmu.edu>
Date: Tue, 2 Oct 2012 00:19:43 -0400
Subject: cdec cleanup, remove bayesian stuff, parsing stuff

---
 gi/pf/pf.h | 84 --------------------------------------------------------------
 1 file changed, 84 deletions(-)
 delete mode 100644 gi/pf/pf.h

(limited to 'gi/pf/pf.h')

diff --git a/gi/pf/pf.h b/gi/pf/pf.h
deleted file mode 100644
index ede7cda8..00000000
--- a/gi/pf/pf.h
+++ /dev/null
@@ -1,84 +0,0 @@
-#ifndef _PF_H_
-#define _PF_H_
-
-#include <cassert>
-#include <vector>
-#include "sampler.h"
-#include "prob.h"
-
-template <typename ParticleType>
-struct ParticleRenormalizer {
-  void operator()(std::vector<ParticleType>* pv) const {
-    if (pv->empty()) return;
-    prob_t z = prob_t::Zero();
-    for (unsigned i = 0; i < pv->size(); ++i)
-      z += (*pv)[i].weight;
-    assert(z > prob_t::Zero());
-    for (unsigned i = 0; i < pv->size(); ++i)
-      (*pv)[i].weight /= z;
-  }
-};
-
-template <typename ParticleType>
-struct MultinomialResampleFilter {
-  explicit MultinomialResampleFilter(MT19937* rng) : rng_(rng) {}
-
-  void operator()(std::vector<ParticleType>* pv) {
-    if (pv->empty()) return;
-    std::vector<ParticleType>& ps = *pv;
-    SampleSet<prob_t> ss;
-    for (int i = 0; i < ps.size(); ++i)
-      ss.add(ps[i].weight);
-    std::vector<ParticleType> nps; nps.reserve(ps.size());
-    const prob_t uniform_weight(1.0 / ps.size());
-    for (int i = 0; i < ps.size(); ++i) {
-      nps.push_back(ps[rng_->SelectSample(ss)]);
-      nps[i].weight = uniform_weight;
-    }
-    nps.swap(ps);
-  }
-
- private:
-  MT19937* rng_;
-};
-
-template <typename ParticleType>
-struct SystematicResampleFilter {
-  explicit SystematicResampleFilter(MT19937* rng) : rng_(rng), renorm_() {}
-
-  void operator()(std::vector<ParticleType>* pv) {
-    if (pv->empty()) return;
-    renorm_(pv);
-    std::vector<ParticleType>& ps = *pv;
-    std::vector<ParticleType> nps; nps.reserve(ps.size());
-    double lower = 0, upper = 0;
-    const double skip = 1.0 / ps.size();
-    double u_j = rng_->next() * skip;
-    //std::cerr << "u_0: " << u_j << std::endl;
-    int j = 0;
-    for (unsigned i = 0; i < ps.size(); ++i) {
-      upper += ps[i].weight.as_float();
-      //std::cerr << "lower: " << lower << " upper: " << upper << std::endl;
-      // how many children does ps[i] have?
-      while (u_j < lower) { u_j += skip; ++j; }
-      while (u_j >= lower && u_j <= upper) {
-        assert(j < ps.size());
-        nps.push_back(ps[i]);
-        u_j += skip;
-        //std::cerr << " add u_j=" << u_j << std::endl;
-        ++j;
-      }
-      lower = upper;
-    }
-    //std::cerr << ps.size() << " " << nps.size() << "\n";
-    assert(ps.size() == nps.size());
-    //exit(1);
-    ps.swap(nps);
-  }
-
- private:
-  MT19937* rng_;
-  ParticleRenormalizer<ParticleType> renorm_;
-};
-
-#endif
-- 
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