From 70a1c886142ed2e9cce716507bb68c9845f1650b Mon Sep 17 00:00:00 2001
From: Ulrich Germann <Ulrich.Germann@gmail.com>
Date: Sun, 26 Jul 2015 21:23:13 +0100
Subject: [PATCH] New dummy bias that always returns 1. Purpose: to keep track
 of phrase counts per document. If no bias is given, no per-documents counts
 are stored.

---
 moses/TranslationModel/UG/mm/ug_sampling_bias.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/moses/TranslationModel/UG/mm/ug_sampling_bias.h b/moses/TranslationModel/UG/mm/ug_sampling_bias.h
index ad7735bc1..351d7be8c 100644
--- a/moses/TranslationModel/UG/mm/ug_sampling_bias.h
+++ b/moses/TranslationModel/UG/mm/ug_sampling_bias.h
@@ -91,5 +91,17 @@ namespace Moses
 
     };
 
+    class
+    SamplingBiasAlways : public SamplingBias
+    {
+    public:
+      SamplingBiasAlways(std::vector<id_type> const* sid2docid)
+	: SamplingBias(sid2docid) {} 
+      
+      float operator[](id_type const idx)       { return 1; }
+      float operator[](id_type const idx) const { return 1; }
+      size_t size() const { return 0; }
+    };
+
   }
 }