add some helper functions for director kernel

shogun-toolbox · May 26, 2012 · d8a7270 · d8a7270
1 parent 676b942
commit d8a7270
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Showing 2 changed files with 31 additions and 3 deletions.
diff --git a/src/shogun/kernel/DirectorKernel.h b/src/shogun/kernel/DirectorKernel.h
@@ -67,6 +67,34 @@ IGNORE_IN_CLASSLIST class CDirectorKernel: public CKernel
 			return 0;
 		}
 
+		virtual void set_num_vec_lhs(int32_t num)
+		{
+			num_lhs=num;
+		}
+
+		virtual void set_num_vec_rhs(int32_t num)
+		{
+			num_rhs=num;
+		}
+
+		virtual bool has_features()
+		{
+			return true;
+		}
+
+		SGMatrix<float64_t> get_km()
+		{
+			SGMatrix<float64_t> km(num_lhs, num_rhs);
+
+			for (int32_t i=0; i<num_lhs; i++)
+			{
+				for (int32_t j=0; j<num_rhs; j++)
+					km[j*num_rhs+i]=kernel(i,j);
+			}
+
+			return km;
+		}
+
 		/** return what type of kernel we are
 		 *
 		 * @return kernel type DIRECTOR

diff --git a/src/shogun/kernel/Kernel.h b/src/shogun/kernel/Kernel.h
@@ -438,7 +438,7 @@ class CKernel : public CSGObject
 		 *
 		 * @return number of vectors of left-hand side
 		 */
-		virtual inline int32_t get_num_vec_lhs()
+		virtual int32_t get_num_vec_lhs()
 		{
 			return num_lhs;
 		}
@@ -447,7 +447,7 @@ class CKernel : public CSGObject
 		 *
 		 * @return number of vectors of right-hand side
 		 */
-		virtual inline int32_t get_num_vec_rhs()
+		virtual int32_t get_num_vec_rhs()
 		{
 			return num_rhs;
 		}
@@ -456,7 +456,7 @@ class CKernel : public CSGObject
 		 *
 		 * @return true if features are assigned
 		 */
-		virtual inline bool has_features()
+		virtual bool has_features()
 		{
 			return lhs && rhs;
 		}