add SGVector based dense_dot_vec function wrapping dense_dot to

dotfeatures
shogun-toolbox · Jan 30, 2012 · 7827b83 · 7827b83
1 parent 66ebf04
commit 7827b83
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diff --git a/src/shogun/features/DotFeatures.cpp b/src/shogun/features/DotFeatures.cpp
@@ -59,6 +59,11 @@ CDotFeatures::CDotFeatures(CFile* loader)
 	init();
 }
 
+float64_t CDotFeatures::dense_dot_vec(int32_t vec_idx1, SGVector<float64_t> vec2)
+{
+	return dense_dot(vec_idx1, vec2.vector, vec2.vlen);
+}
+
 void CDotFeatures::dense_dot_range(float64_t* output, int32_t start, int32_t stop, float64_t* alphas, float64_t* vec, int32_t dim, float64_t b)
 {
 	ASSERT(output);

diff --git a/src/shogun/features/DotFeatures.h b/src/shogun/features/DotFeatures.h
@@ -77,6 +77,13 @@ class CDotFeatures : public CFeatures
 		 */
 		virtual float64_t dot(int32_t vec_idx1, CDotFeatures* df, int32_t vec_idx2)=0;
 
+		/** compute dot product between vector1 and a dense vector
+		 *
+		 * @param vec_idx1 index of first vector
+		 * @param vec2 dense vector
+		 */
+		virtual float64_t dense_dot_vec(int32_t vec_idx1, SGVector<float64_t> vec2);
+
 		/** compute dot product between vector1 and a dense vector
 		 *
 		 * @param vec_idx1 index of first vector