Изменения
→Пример реализации на языке Scala
libraryDependencies '''+=''' "com.github.haifengl" '''%%''' "smile-scala" '''%''' "1.5.2"
Пример классификации датасета и вычисления F1 меры<ref>[https://en.wikipedia.org/wiki/F1_score F1 мера]</ref> используя smile.classification.knn<ref>[https://haifengl.github.io/smile/classification.html#knn Smile, KNN]</ref>:
'''import '''smile.classification._ '''import '''smile.data._ '''import '''smile.plot._ '''import '''smile.read '''import '''smile.validation.FMeasure
'''val '''toy: AttributeDataset = read.table("iris.csv", delimiter = ",", response = Some(('''new '''NumericAttribute("class"), 2))) '''val '''x: Array[Array['''Double''']] = toy.x() '''val '''y: Array['''Int'''] = toy.y().map(_.toInt) '''val '''KNN: KNN[Array['''Double''']] = knn(x, y, 3) '''val '''predictions: Array['''Int'''] = x.map(KNN.predict) '''val '''f1Score = '''new '''FMeasure().measure(predictions, y)
plot(x, y, KNN)
