Example/kernel oligo string (#5081)

* Add oligo string kernel meta example.
shogun-toolbox · Jun 26, 2020 · a075792 · a075792
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diff --git a/data b/data
diff --git a/examples/meta/src/kernel/oligo_string.sg.in b/examples/meta/src/kernel/oligo_string.sg.in
@@ -0,0 +1,18 @@
+File traindat = read_csv("@SHOGUN_DATA@/fm_train_dna.dat")
+File testdat = read_csv("@SHOGUN_DATA@/fm_test_dna.dat")
+
+#![create_features]
+Features feats_train = create_char_string_features(traindat, enum EAlphabet.DNA)
+Features feats_test = create_char_string_features(testdat, enum EAlphabet.DNA)
+#![create_features]
+
+#![create_kernel]
+Kernel kernel = create_kernel("OligoStringKernel",cache_size=10, k=3, width=1.2)
+kernel.init(feats_train, feats_train)
+#![create_kernel]
+
+#![get_kernel_features]
+RealMatrix km_train = kernel.get_kernel_matrix()
+kernel.init(feats_train, feats_test)
+RealMatrix km_test = kernel.get_kernel_matrix()
+#![get_kernel_features]
diff --git a/examples/undocumented/python/kernel_oligo_string.py b/examples/undocumented/python/kernel_oligo_string.py