1 files changed, 76 insertions, 0 deletions
diff --git a/rst_parser/dep_training.cc b/rst_parser/dep_training.cc
new file mode 100644
index 00000000..ef97798b
--- /dev/null
+++ b/rst_parser/dep_training.cc
@@ -0,0 +1,76 @@
+#include "dep_training.h"
+
+#include <vector>
+#include <iostream>
+
+#include "stringlib.h"
+#include "filelib.h"
+#include "tdict.h"
+#include "picojson.h"
+
+using namespace std;
+
+static void ParseInstance(const string& line, int start, TrainingInstance* out, int lc = 0) {
+  picojson::value obj;
+  string err;
+  picojson::parse(obj, line.begin() + start, line.end(), &err);
+  if (err.size() > 0) { cerr << "JSON parse error in " << lc << ": " << err << endl; abort(); }
+  TrainingInstance& cur = *out;
+  TaggedSentence& ts = cur.ts;
+  EdgeSubset& tree = cur.tree;
+  ts.pos.clear();
+  ts.words.clear();
+  tree.roots.clear();
+  tree.h_m_pairs.clear();
+  assert(obj.is<picojson::object>());
+  const picojson::object& d = obj.get<picojson::object>();
+  const picojson::array& ta = d.find("tokens")->second.get<picojson::array>();
+  for (unsigned i = 0; i < ta.size(); ++i) {
+    ts.words.push_back(TD::Convert(ta[i].get<picojson::array>()[0].get<string>()));
+    ts.pos.push_back(TD::Convert(ta[i].get<picojson::array>()[1].get<string>()));
+  }
+  if (d.find("deps") != d.end()) {
+    const picojson::array& da = d.find("deps")->second.get<picojson::array>();
+    for (unsigned i = 0; i < da.size(); ++i) {
+      const picojson::array& thm = da[i].get<picojson::array>();
+      // get dep type here
+      short h = thm[2].get<double>();
+      short m = thm[1].get<double>();
+      if (h < 0)
+        tree.roots.push_back(m);
+      else
+        tree.h_m_pairs.push_back(make_pair(h,m));
+    }
+  }
+  //cerr << TD::GetString(ts.words) << endl << TD::GetString(ts.pos) << endl << tree << endl;
+}
+
+bool TrainingInstance::ReadInstance(std::istream* in, TrainingInstance* instance) {
+  string line;
+  if (!getline(*in, line)) return false;
+  size_t pos = line.rfind('\t');
+  assert(pos != string::npos);
+  static int lc = 0; ++lc;
+  ParseInstance(line, pos + 1, instance, lc);
+  return true;
+}
+
+void TrainingInstance::ReadTrainingCorpus(const string& fname, vector<TrainingInstance>* corpus, int rank, int size) {
+  ReadFile rf(fname);
+  istream& in = *rf.stream();
+  string line;
+  int lc = 0;
+  bool flag = false;
+  while(getline(in, line)) {
+    ++lc;
+    if ((lc-1) % size != rank) continue;
+    if (rank == 0 && lc % 10 == 0) { cerr << '.' << flush; flag = true; }
+    if (rank == 0 && lc % 400 == 0) { cerr << " [" << lc << "]\n"; flag = false; }
+    size_t pos = line.rfind('\t');
+    assert(pos != string::npos);
+    corpus->push_back(TrainingInstance());
+    ParseInstance(line, pos + 1, &corpus->back(), lc);
+  }
+  if (flag) cerr << "\nRead " << lc << " training instances\n";
+}
+