1 files changed, 77 insertions, 0 deletions
diff --git a/training/dpmert/mr_dpmert_reduce.cc b/training/dpmert/mr_dpmert_reduce.cc
new file mode 100644
index 00000000..31512a03
--- /dev/null
+++ b/training/dpmert/mr_dpmert_reduce.cc
@@ -0,0 +1,77 @@
+#include <sstream>
+#include <iostream>
+#include <fstream>
+#include <vector>
+
+#include <boost/program_options.hpp>
+#include <boost/program_options/variables_map.hpp>
+
+#include "sparse_vector.h"
+#include "error_surface.h"
+#include "line_optimizer.h"
+#include "b64tools.h"
+#include "stringlib.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()
+        ("evaluation_metric,m",po::value<string>(), "Evaluation metric (IBM_BLEU, etc.)")
+        ("help,h", "Help");
+  po::options_description dcmdline_options;
+  dcmdline_options.add(opts);
+  po::store(parse_command_line(argc, argv, dcmdline_options), *conf);
+  bool flag = conf->count("evaluation_metric") == 0;
+  if (flag || conf->count("help")) {
+    cerr << dcmdline_options << endl;
+    exit(1);
+  }
+}
+
+int main(int argc, char** argv) {
+  po::variables_map conf;
+  InitCommandLine(argc, argv, &conf);
+  const string evaluation_metric = conf["evaluation_metric"].as<string>();
+  EvaluationMetric* metric = EvaluationMetric::Instance(evaluation_metric);
+  LineOptimizer::ScoreType opt_type = LineOptimizer::MAXIMIZE_SCORE;
+  if (metric->IsErrorMetric())
+    opt_type = LineOptimizer::MINIMIZE_SCORE;
+
+  vector<ErrorSurface> esv;
+  string last_key, line, key, val;
+  while(getline(cin, line)) {
+    size_t ks = line.find("\t");
+    assert(string::npos != ks);
+    assert(ks > 2);
+    key = line.substr(2, ks - 2);
+    val = line.substr(ks + 1);
+    if (key != last_key) {
+      if (!last_key.empty()) {
+	float score;
+        double x = LineOptimizer::LineOptimize(metric, esv, opt_type, &score);
+	cout << last_key << "|" << x << "|" << score << endl;
+      }
+      last_key.swap(key);
+      esv.clear();
+    }
+    if (val.size() % 4 != 0) {
+      cerr << "B64 encoding error 1! Skipping.\n";
+      continue;
+    }
+    string encoded(val.size() / 4 * 3, '\0');
+    if (!B64::b64decode(reinterpret_cast<const unsigned char*>(&val[0]), val.size(), &encoded[0], encoded.size())) {
+      cerr << "B64 encoding error 2! Skipping.\n";
+      continue;
+    }
+    esv.push_back(ErrorSurface());
+    esv.back().Deserialize(encoded);
+  }
+  if (!esv.empty()) {
+    float score;
+    double x = LineOptimizer::LineOptimize(metric, esv, opt_type, &score);
+    cout << last_key << "|" << x << "|" << score << endl;
+  }
+  return 0;
+}