From 259299ecae70194ff1d9b0558448efb3eb6ef494 Mon Sep 17 00:00:00 2001 From: Chris Dyer Date: Mon, 2 Apr 2012 23:49:30 -0400 Subject: make sure i don't break build by adding RST parser stubs --- rst_parser/Makefile.am | 5 +++- rst_parser/arc_factored.cc | 31 ++++++++++++++++++++ rst_parser/arc_factored.h | 72 ++++++++++++++++++++++++++++++++-------------- rst_parser/mst_train.cc | 1 + rst_parser/rst.cc | 5 ++++ rst_parser/rst.h | 5 +++- rst_parser/rst_test.cc | 33 +++++++++++++++++++++ 7 files changed, 129 insertions(+), 23 deletions(-) create mode 100644 rst_parser/arc_factored.cc create mode 100644 rst_parser/rst_test.cc (limited to 'rst_parser') diff --git a/rst_parser/Makefile.am b/rst_parser/Makefile.am index fef1c1a2..e97ab5c5 100644 --- a/rst_parser/Makefile.am +++ b/rst_parser/Makefile.am @@ -8,9 +8,12 @@ TESTS = rst_test noinst_LIBRARIES = librst.a -librst_a_SOURCES = rst.cc +librst_a_SOURCES = arc_factored.cc rst.cc mst_train_SOURCES = mst_train.cc mst_train_LDADD = librst.a $(top_srcdir)/decoder/libcdec.a $(top_srcdir)/mteval/libmteval.a $(top_srcdir)/utils/libutils.a ../klm/lm/libklm.a ../klm/util/libklm_util.a -lz +rst_test_SOURCES = rst_test.cc +rst_test_LDADD = librst.a $(top_srcdir)/decoder/libcdec.a $(top_srcdir)/mteval/libmteval.a $(top_srcdir)/utils/libutils.a ../klm/lm/libklm.a ../klm/util/libklm_util.a -lz + AM_CPPFLAGS = -W -Wall -Wno-sign-compare $(GTEST_CPPFLAGS) -I$(top_srcdir)/decoder -I$(top_srcdir)/utils -I$(top_srcdir)/mteval -I../klm diff --git a/rst_parser/arc_factored.cc b/rst_parser/arc_factored.cc new file mode 100644 index 00000000..1e75600b --- /dev/null +++ b/rst_parser/arc_factored.cc @@ -0,0 +1,31 @@ +#include "arc_factored.h" + +#include + +#include + +using namespace std; +using namespace boost; + +// based on Trajan 1977 +void ArcFactoredForest::MaximumSpanningTree(SpanningTree* st) const { + typedef disjoint_sets_with_storage DisjointSet; + DisjointSet strongly(num_words_ + 1); + DisjointSet weakly(num_words_ + 1); + set roots, h, rset; + vector > enter(num_words_ + 1); + for (unsigned i = 0; i <= num_words_; ++i) { + strongly.make_set(i); + weakly.make_set(i); + roots.insert(i); + } + while(!roots.empty()) { + set::iterator it = roots.begin(); + const unsigned k = *it; + roots.erase(it); + cerr << "k=" << k << endl; + pair ij; // TODO = Max(k); + } +} + diff --git a/rst_parser/arc_factored.h b/rst_parser/arc_factored.h index 312d7d67..e99be482 100644 --- a/rst_parser/arc_factored.h +++ b/rst_parser/arc_factored.h @@ -1,58 +1,88 @@ #ifndef _ARC_FACTORED_H_ #define _ARC_FACTORED_H_ -#include +#include #include +#include +#include #include "array2d.h" #include "sparse_vector.h" +#include "prob.h" +#include "weights.h" + +struct SpanningTree { + SpanningTree() : roots(1, -1) {} + std::vector roots; // unless multiroot trees are supported, this + // will have a single member + std::vector > h_m_pairs; +}; class ArcFactoredForest { public: explicit ArcFactoredForest(short num_words) : num_words_(num_words), root_edges_(num_words), - edges_(num_words, num_words) {} + edges_(num_words, num_words) { + for (int h = 0; h < num_words; ++h) { + for (int m = 0; m < num_words; ++m) { + edges_(h, m).h = h + 1; + edges_(h, m).m = m + 1; + } + root_edges_[h].h = 0; + root_edges_[h].m = h + 1; + } + } + + // compute the maximum spanning tree based on the current weighting + // using the O(n^2) CLE algorithm + void MaximumSpanningTree(SpanningTree* st) const; struct Edge { - Edge() : features(), edge_prob(prob_t::Zero()) {} + Edge() : h(), m(), features(), edge_prob(prob_t::Zero()) {} + short h; + short m; SparseVector features; prob_t edge_prob; }; - template - void Reweight(const V& weights) { - for (int m = 0; m < num_words_; ++m) { - for (int h = 0; h < num_words_; ++h) { - if (h != m) { - Edge& e = edges_(h, m); - e.edge_prob.logeq(e.features.dot(weights)); - } - } - if (m) { - Edge& e = root_edges_[m]; - e.edge_prob.logeq(e.features.dot(weights)); - } - } - } - const Edge& operator()(short h, short m) const { assert(m > 0); assert(m <= num_words_); assert(h >= 0); assert(h <= num_words_); - return h ? edges_(h - 1, m - 1) : root_edges[m - 1]; + return h ? edges_(h - 1, m - 1) : root_edges_[m - 1]; } + Edge& operator()(short h, short m) { assert(m > 0); assert(m <= num_words_); assert(h >= 0); assert(h <= num_words_); - return h ? edges_(h - 1, m - 1) : root_edges[m - 1]; + return h ? edges_(h - 1, m - 1) : root_edges_[m - 1]; + } + + template + void Reweight(const V& weights) { + for (int m = 0; m < num_words_; ++m) { + for (int h = 0; h < num_words_; ++h) { + if (h != m) { + Edge& e = edges_(h, m); + e.edge_prob.logeq(e.features.dot(weights)); + } + } + Edge& e = root_edges_[m]; + e.edge_prob.logeq(e.features.dot(weights)); + } } + private: unsigned num_words_; std::vector root_edges_; Array2D edges_; }; +inline std::ostream& operator<<(std::ostream& os, const ArcFactoredForest::Edge& edge) { + return os << "(" << edge.h << " < " << edge.m << ")"; +} + #endif diff --git a/rst_parser/mst_train.cc b/rst_parser/mst_train.cc index 1bceaff5..7b5af4c1 100644 --- a/rst_parser/mst_train.cc +++ b/rst_parser/mst_train.cc @@ -6,6 +6,7 @@ using namespace std; int main(int argc, char** argv) { ArcFactoredForest af(5); + cerr << af(0,3) << endl; return 0; } diff --git a/rst_parser/rst.cc b/rst_parser/rst.cc index 0ab3e296..f6b295b3 100644 --- a/rst_parser/rst.cc +++ b/rst_parser/rst.cc @@ -1,2 +1,7 @@ #include "rst.h" +using namespace std; + +StochasticForest::StochasticForest(const ArcFactoredForest& af) { +} + diff --git a/rst_parser/rst.h b/rst_parser/rst.h index 30a1f8a4..865871eb 100644 --- a/rst_parser/rst.h +++ b/rst_parser/rst.h @@ -1,7 +1,10 @@ #ifndef _RST_H_ #define _RST_H_ -struct RandomSpanningTree { +#include "arc_factored.h" + +struct StochasticForest { + explicit StochasticForest(const ArcFactoredForest& af); }; #endif diff --git a/rst_parser/rst_test.cc b/rst_parser/rst_test.cc new file mode 100644 index 00000000..e8fe706e --- /dev/null +++ b/rst_parser/rst_test.cc @@ -0,0 +1,33 @@ +#include "arc_factored.h" + +#include + +using namespace std; + +int main(int argc, char** argv) { + // John saw Mary + // (H -> M) + // (1 -> 2) 20 + // (1 -> 3) 3 + // (2 -> 1) 20 + // (2 -> 3) 30 + // (3 -> 2) 0 + // (3 -> 1) 11 + // (0, 2) 10 + // (0, 1) 9 + // (0, 3) 9 + ArcFactoredForest af(3); + af(1,2).edge_prob.logeq(20); + af(1,3).edge_prob.logeq(3); + af(2,1).edge_prob.logeq(20); + af(2,3).edge_prob.logeq(30); + af(3,2).edge_prob.logeq(0); + af(3,1).edge_prob.logeq(11); + af(0,2).edge_prob.logeq(10); + af(0,1).edge_prob.logeq(9); + af(0,3).edge_prob.logeq(9); + SpanningTree tree; + af.MaximumSpanningTree(&tree); + return 0; +} + -- cgit v1.2.3