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-rw-r--r--extractor/features/sample_source_count.h23
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diff --git a/extractor/features/sample_source_count.h b/extractor/features/sample_source_count.h
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+++ b/extractor/features/sample_source_count.h
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+#ifndef _SAMPLE_SOURCE_COUNT_H_
+#define _SAMPLE_SOURCE_COUNT_H_
+
+#include "feature.h"
+
+namespace extractor {
+namespace features {
+
+/**
+ * Feature scoring the number of times the source phrase occurs in the sampled
+ * set.
+ */
+class SampleSourceCount : public Feature {
+ public:
+ double Score(const FeatureContext& context) const;
+
+ string GetName() const;
+};
+
+} // namespace features
+} // namespace extractor
+
+#endif