From 5e1ab3481551607f1c2a10027049044cd41f78ab Mon Sep 17 00:00:00 2001
From: Patrick Simianer <p@simianer.de>
Date: Sat, 24 Sep 2011 23:46:49 +0200
Subject: cleaning up

---
 dtrain/test/logreg/bin_class.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 dtrain/test/logreg/bin_class.h

(limited to 'dtrain/test/logreg/bin_class.h')

diff --git a/dtrain/test/logreg/bin_class.h b/dtrain/test/logreg/bin_class.h
new file mode 100644
index 00000000..3466109a
--- /dev/null
+++ b/dtrain/test/logreg/bin_class.h
@@ -0,0 +1,22 @@
+#ifndef _BIN_CLASS_H_
+#define _BIN_CLASS_H_
+
+#include <vector>
+#include "sparse_vector.h"
+
+struct TrainingInstance {
+  // TODO add other info? loss for MIRA-type updates?
+  SparseVector<double> x_feature_map;
+  bool y;
+};
+
+struct Objective {
+  virtual ~Objective();
+
+  // returns f(x) and f'(x)
+  virtual double ObjectiveAndGradient(const SparseVector<double>& x,
+                  const std::vector<TrainingInstance>& training_instances,
+                  SparseVector<double>* g) const = 0;
+};
+
+#endif
-- 
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