Unify sampling backoff strategy.

1 files changed, 2 insertions, 20 deletions

diff --git a/extractor/sampler.h b/extractor/sampler.h
index bd8a5876..3c4e37f1 100644
--- a/extractor/sampler.h
+++ b/extractor/sampler.h
@@ -4,38 +4,20 @@
 #include <memory>
 #include <unordered_set>
 
-#include "data_array.h"
-
 using namespace std;
 
 namespace extractor {
 
 class PhraseLocation;
-class SuffixArray;
 
 /**
- * Provides uniform sampling for a PhraseLocation.
+ * Base sampler class.
  */
 class Sampler {
  public:
-  Sampler(shared_ptr<SuffixArray> suffix_array, int max_samples);
-
-  virtual ~Sampler();
-
-  // Samples uniformly at most max_samples phrase occurrences.
   virtual PhraseLocation Sample(
       const PhraseLocation& location,
-      const unordered_set<int>& blacklisted_sentence_ids) const;
-
- protected:
-  Sampler();
-
- private:
-  // Round floating point number to the nearest integer.
-  int Round(double x) const;
-
-  shared_ptr<SuffixArray> suffix_array;
-  int max_samples;
+      const unordered_set<int>& blacklisted_sentence_ids) const = 0;
 };
 
 } // namespace extractor