1 files changed, 27 insertions, 0 deletions
diff --git a/klm/lm/builder/interpolate.hh b/klm/lm/builder/interpolate.hh
new file mode 100644
index 00000000..9268d404
--- /dev/null
+++ b/klm/lm/builder/interpolate.hh
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+#ifndef LM_BUILDER_INTERPOLATE__
+#define LM_BUILDER_INTERPOLATE__
+
+#include <stdint.h>
+
+#include "lm/builder/multi_stream.hh"
+
+namespace lm { namespace builder {
+ 
+/* Interpolate step.  
+ * Input: suffix sorted n-grams with (p_uninterpolated, gamma) from
+ * InitialProbabilities.
+ * Output: suffix sorted n-grams with complete probability
+ */
+class Interpolate {
+  public:
+    explicit Interpolate(uint64_t unigram_count, const ChainPositions &backoffs);
+
+    void Run(const ChainPositions &positions);
+
+  private:
+    float uniform_prob_;
+    ChainPositions backoffs_;
+};
+
+}} // namespaces
+#endif // LM_BUILDER_INTERPOLATE__