add one-class classification example

Author: stropitek

examples/oneClass.js

@@ -0,0 +1,38 @@
+'use strict';
+
+function oneClass(SVM) {
+  let svm = new SVM({
+    kernel: SVM.KERNEL_TYPES.RBF,
+    type: SVM.SVM_TYPES.ONE_CLASS,
+    gamma: 1,
+    cost: 1,
+    nu: 0.1
+  });
+  const features = [[0, 0], [1, 1], [1, 0], [0, 1]];
+  const toPredict = [[0.5, 0.5], [1.5, 1]];
+  const expected = [1, -1];
+  const labels = [0, 0, 0, 0];
+  svm.train(features, labels);
+  for (let i = 0; i < toPredict.length; i++) {
+    const pred = svm.predictOne(toPredict[i]);
+    console.log(`pred: ${pred}, expected: ${expected[i]}`);
+  }
+}
+
+async function execWasm() {
+  console.log('wasm');
+  let SVM;
+  try {
+    SVM = await require('../wasm');
+  } catch (e) {
+    console.log(e);
+  }
+  oneClass(SVM);
+}
+
+try {
+  execWasm(); // Asynchronous
+} catch (e) {
+  console.log('failed');
+  console.log(e);
+}