1 files changed, 81 insertions, 0 deletions
diff --git a/training/dpmert/mr_dpmert_generate_mapper_input.cc b/training/dpmert/mr_dpmert_generate_mapper_input.cc
new file mode 100644
index 00000000..199cd23a
--- /dev/null
+++ b/training/dpmert/mr_dpmert_generate_mapper_input.cc
@@ -0,0 +1,81 @@
+#include <iostream>
+#include <vector>
+
+#include <boost/program_options.hpp>
+#include <boost/program_options/variables_map.hpp>
+
+#include "filelib.h"
+#include "weights.h"
+#include "line_optimizer.h"
+
+using namespace std;
+namespace po = boost::program_options;
+
+void InitCommandLine(int argc, char** argv, po::variables_map* conf) {
+  po::options_description opts("Configuration options");
+  opts.add_options()
+        ("dev_set_size,s",po::value<unsigned>(),"[REQD] Development set size (# of parallel sentences)")
+        ("forest_repository,r",po::value<string>(),"[REQD] Path to forest repository")
+        ("weights,w",po::value<string>(),"[REQD] Current feature weights file")
+        ("optimize_feature,o",po::value<vector<string> >(), "Feature to optimize (if none specified, all weights listed in the weights file will be optimized)")
+        ("random_directions,d",po::value<unsigned int>()->default_value(20),"Number of random directions to run the line optimizer in")
+        ("help,h", "Help");
+  po::options_description dcmdline_options;
+  dcmdline_options.add(opts);
+  po::store(parse_command_line(argc, argv, dcmdline_options), *conf);
+  bool flag = false;
+  if (conf->count("dev_set_size") == 0) {
+    cerr << "Please specify the size of the development set using -d N\n";
+    flag = true;
+  }
+  if (conf->count("weights") == 0) {
+    cerr << "Please specify the starting-point weights using -w <weightfile.txt>\n";
+    flag = true;
+  }
+  if (conf->count("forest_repository") == 0) {
+    cerr << "Please specify the forest repository location using -r <DIR>\n";
+    flag = true;
+  }
+  if (flag || conf->count("help")) {
+    cerr << dcmdline_options << endl;
+    exit(1);
+  }
+}
+
+int main(int argc, char** argv) {
+  RandomNumberGenerator<boost::mt19937> rng;
+  po::variables_map conf;
+  InitCommandLine(argc, argv, &conf);
+  vector<string> features;
+  SparseVector<weight_t> origin;
+  vector<weight_t> w;
+  Weights::InitFromFile(conf["weights"].as<string>(), &w, &features);
+  Weights::InitSparseVector(w, &origin);
+  const string forest_repository = conf["forest_repository"].as<string>();
+  if (!DirectoryExists(forest_repository)) {
+    cerr << "Forest repository directory " << forest_repository << " not found!\n";
+    return 1;
+  }
+  if (conf.count("optimize_feature") > 0)
+    features=conf["optimize_feature"].as<vector<string> >();
+  vector<SparseVector<weight_t> > directions;
+  vector<int> fids(features.size());
+  for (unsigned i = 0; i < features.size(); ++i)
+    fids[i] = FD::Convert(features[i]);
+  LineOptimizer::CreateOptimizationDirections(
+     fids,
+     conf["random_directions"].as<unsigned int>(),
+     &rng,
+     &directions);
+  unsigned dev_set_size = conf["dev_set_size"].as<unsigned>();
+  for (unsigned i = 0; i < dev_set_size; ++i) {
+    for (unsigned j = 0; j < directions.size(); ++j) {
+      cout << forest_repository << '/' << i << ".json.gz " << i << ' ';
+      print(cout, origin, "=", ";");
+      cout << ' ';
+      print(cout, directions[j], "=", ";");
+      cout << endl;
+    }
+  }
+  return 0;
+}