Пример #1
0
func TestLNSmote(t *testing.T) {
	// Read sample dataset.
	dataset := tabula.Claset{}
	_, e := dsv.SimpleRead(fcfg, &dataset)
	if nil != e {
		t.Fatal(e)
	}

	fmt.Println("[lnsmote_test] Total samples:", dataset.GetNRow())

	// Write original samples.
	writer, e := dsv.NewWriter("")

	if nil != e {
		t.Fatal(e)
	}

	e = writer.OpenOutput("phoneme_lnsmote.csv")
	if e != nil {
		t.Fatal(e)
	}

	sep := dsv.DefSeparator
	_, e = writer.WriteRawRows(dataset.GetRows(), &sep)
	if e != nil {
		t.Fatal(e)
	}

	// Initialize LN-SMOTE.
	lnsmoteRun := lnsmote.New(100, 5, 5, "1", "lnsmote.outliers")

	e = lnsmoteRun.Resampling(&dataset)

	fmt.Println("[lnsmote_test] # synthetic:", lnsmoteRun.Synthetics.Len())

	sep = dsv.DefSeparator
	_, e = writer.WriteRawRows(lnsmoteRun.Synthetics.GetRows(), &sep)
	if e != nil {
		t.Fatal(e)
	}

	e = writer.Close()
	if e != nil {
		t.Fatal(e)
	}
}
Пример #2
0
func TestCART(t *testing.T) {
	fds := "../../testdata/iris/iris.dsv"

	ds := tabula.Claset{}

	_, e := dsv.SimpleRead(fds, &ds)
	if nil != e {
		t.Fatal(e)
	}

	fmt.Println("[cart_test] class index:", ds.GetClassIndex())

	// copy target to be compared later.
	targetv := ds.GetClassAsStrings()

	assert(t, NRows, ds.GetNRow(), true)

	// Build CART tree.
	CART, e := cart.New(&ds, cart.SplitMethodGini, 0)
	if e != nil {
		t.Fatal(e)
	}

	fmt.Println("[cart_test] CART Tree:\n", CART)

	// Create test set
	testset := tabula.Claset{}
	_, e = dsv.SimpleRead(fds, &testset)

	if nil != e {
		t.Fatal(e)
	}

	testset.GetClassColumn().ClearValues()

	// Classifiy test set
	e = CART.ClassifySet(&testset)
	if nil != e {
		t.Fatal(e)
	}

	assert(t, targetv, testset.GetClassAsStrings(), true)
}