Esempio n. 1
0
func main() {
	train_path, _, _, method, params := hector.PrepareParams()
	global, _ := strconv.ParseInt(params["global"], 10, 64)
	profile, _ := params["profile"]
	dataset := core.NewDataSet()
	dataset.Load(train_path, global)

	cv, _ := strconv.ParseInt(params["cv"], 10, 32)
	total := int(cv)

	if profile != "" {
		fmt.Println(profile)
		f, err := os.Create(profile)
		if err != nil {
			fmt.Println("%v", err)
			log.Fatal(err)
		}
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	average_auc := 0.0
	for part := 0; part < total; part++ {
		train, test := SplitFile(dataset, total, part)
		classifier := hector.GetClassifier(method)
		classifier.Init(params)
		auc, _ := hector.AlgorithmRunOnDataSet(classifier, train, test, "", params)
		fmt.Println("AUC:")
		fmt.Println(auc)
		average_auc += auc
		classifier = nil
	}
	fmt.Println(average_auc / float64(total))
}
Esempio n. 2
0
func main() {
	train_path, _, _, method, params := hector.PrepareParams()
	global, _ := strconv.ParseInt(params["global"], 10, 64)
	profile, _ := params["profile"]
	dataset := core.NewDataSet()
	dataset.Load(train_path, global)

	cv, _ := strconv.ParseInt(params["cv"], 10, 32)
	total := int(cv)

	if profile != "" {
		f, err := os.Create(profile)
		if err != nil {
			log.Fatal(err)
		}
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	average_accuracy := 0.0
	for part := 0; part < total; part++ {
		train, test := SplitFile(dataset, total, part)
		classifier := hector.GetMutliClassClassifier(method)
		classifier.Init(params)
		accuracy := hector.MultiClassRunOnDataSet(classifier, train, test, "", params)
		fmt.Println("accuracy : ", accuracy)
		average_accuracy += accuracy
		classifier = nil
		train = nil
		test = nil
		runtime.GC()
	}
	fmt.Println(average_accuracy / float64(total))
}
Esempio n. 3
0
func main() {
	train, test, _, _, params := hector.PrepareParams()

	action, _ := params["action"]

	if action == "encodelabel" {

		fmt.Println("encoded dataset label ..." + train)
		e := core.NewLabelEncoder()
		EncodeLabelAction(e, train)
		fmt.Println("encoded dataset label ..." + test)
		EncodeLabelAction(e, test)
	}

}
Esempio n. 4
0
func main() {
	_, _, _, method, params := hector.PrepareParams()
	ch := &ClassifierHandler{
		classifier: hector.GetClassifier(method),
	}
	model, ok := params["model"]
	if !ok {
		log.Fatalln("please input model file")
	}
	ch.classifier.LoadModel(model)
	http.Handle("/predict", ch)
	err := http.ListenAndServe(":"+params["port"], nil)
	if err != nil {
		log.Fatal(err)
	}
}
Esempio n. 5
0
func main() {
	train, test, pred, method, params := hector.PrepareParams()

	action, _ := params["action"]

	classifier := hector.GetClassifier(method)

	if action == "" {
		auc, _, _ := hector.AlgorithmRun(classifier, train, test, pred, params)
		fmt.Println("AUC:")
		fmt.Println(auc)
	} else if action == "train" {
		hector.AlgorithmTrain(classifier, train, params)

	} else if action == "test" {
		auc, _, _ := hector.AlgorithmTest(classifier, test, pred, params)
		fmt.Println("AUC:")
		fmt.Println(auc)
	}
}
func main() {
	train, _, _, _, params := hector.PrepareParams()

	feature_combination := combine.CategoryFeatureCombination{}
	feature_combination.Init(params)

	dataset := core.NewRawDataSet()
	dataset.Load(train)

	combinations := feature_combination.FindCombination(dataset)

	output := params["output"]

	file, _ := os.Create(output)
	defer file.Close()

	for _, combination := range combinations {
		file.WriteString(strings.Join(combination, "\t") + "\n")
	}
}
Esempio n. 7
0
func main() {
	train_path, test_path, pred_path, _, params := hector.PrepareParams()
	total := 5
	methods := []string{"ftrl", "fm"}
	all_methods_predictions := [][]*eval.LabelPrediction{}
	all_methods_test_predictions := [][]*eval.LabelPrediction{}
	for _, method := range methods {
		fmt.Println(method)
		average_auc := 0.0
		all_predictions := []*eval.LabelPrediction{}
		for part := 0; part < total; part++ {
			train, test, _ := SplitFile(train_path, total, part)
			classifier := hector.GetClassifier(method)

			auc, predictions, _ := hector.AlgorithmRun(classifier, train, test, "", params)
			fmt.Println("AUC:")
			fmt.Println(auc)
			average_auc += auc
			os.Remove(train)
			os.Remove(test)
			classifier = nil
			for _, pred := range predictions {
				all_predictions = append(all_predictions, pred)
			}
		}
		all_methods_predictions = append(all_methods_predictions, all_predictions)
		fmt.Println(average_auc / float64(total))

		classifier := hector.GetClassifier(method)
		fmt.Println(test_path)
		_, test_predictions, _ := hector.AlgorithmRun(classifier, train_path, test_path, "", params)
		all_methods_test_predictions = append(all_methods_test_predictions, test_predictions)
	}

	var wait sync.WaitGroup
	wait.Add(2)
	dataset := core.NewDataSet()
	go func() {
		for i, _ := range all_methods_predictions[0] {
			sample := core.NewSample()
			sample.Label = all_methods_predictions[0][i].Label
			for j, _ := range all_methods_predictions {
				feature := core.Feature{Id: int64(j), Value: all_methods_predictions[j][i].Prediction}
				sample.AddFeature(feature)
			}
			dataset.Samples <- sample
		}
		close(dataset.Samples)
		wait.Done()
	}()

	ensembler := lr.LinearRegression{}
	go func() {
		ensembler.Init(params)
		ensembler.Train(dataset)
		wait.Done()
	}()
	wait.Wait()

	fmt.Println(ensembler.Model)

	wait.Add(2)
	test_dataset := hector.NewDataSet()
	go func() {
		for i, _ := range all_methods_test_predictions[0] {
			sample := hector.NewSample()
			sample.Label = all_methods_test_predictions[0][i].Prediction
			for j, _ := range all_methods_test_predictions {
				feature := hector.Feature{Id: int64(j), Value: all_methods_test_predictions[j][i].Prediction}
				sample.AddFeature(feature)
			}
			test_dataset.Samples <- sample
		}
		close(test_dataset.Samples)
		wait.Done()
	}()

	go func() {
		pred_file, _ := os.Create(test_path + ".out")
		for sample := range test_dataset.Samples {
			prediction := sample.Label //ensembler.Predict(sample)
			pred_file.WriteString(strconv.FormatFloat(prediction, 'g', 5, 64) + "\n")
		}
		defer pred_file.Close()
		wait.Done()
	}()
	wait.Wait()
}