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Given the code below, your task is to select the function from the options provided that correctly completes the task by:i) Creating a function that determines which classifier (KNN or Naive Bayes) has a higher F1 score, or if they have equal scores.ii) Printing the name of the classifier along with its F1 score in the format: 'ClassifierName has the higher F1 score of Score' or 'Both classifiers have the same F1 score of Score'.iii) Executing the function.Select the appropriate code snippet from the options below.from sklearn.datasets import make_classificationfrom sklearn.model_selection import train_test_splitfrom sklearn.neighbors import KNeighborsClassifierfrom sklearn.naive_bayes import GaussianNBfrom sklearn.metrics import f1_score# Generate a synthetic datasetX, y = make_classification(n_samples=1000, n_features=20, n_classes=2, random_state=42)# Split the data into training and test setsX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.25, random_state=42)# Initialise KNN and Naive Bayes classifiersknn = KNeighborsClassifier(n_neighbors=5)nb = GaussianNB()# Train both classifiers on the training dataknn.fit(X_train, y_train)nb.fit(X_train, y_train)# Predict test set results for both classifiersy_pred_knn = knn.predict(X_test)y_pred_nb = nb.predict(X_test)# Calculate F1 scores for both classifiersf1_knn = f1_score(y_test, y_pred_knn)f1_nb = f1_score(y_test, y_pred_nb)# [Your Code Here]def compare_f1_scores(f1_knn, f1_nb):if f1_knn >= f1_nb:print(f"KNN has the higher F1 score of {f1_knn}")else:print(f"Naive Bayes has the higher F1 score of {f1_nb}")compare_f1_scores(f1_knn, f1_nb)def evaluate_classifiers(f1_knn, f1_nb):if f1_knn > f1_nb:print(f"Naive Bayes has the higher F1 score of {f1_nb}")elif f1_nb > f1_knn:print(f"KNN has the higher F1 score of {f1_knn}")else:print(f"Both classifiers have the same F1 score of {f1_nb}")evaluate_classifiers(f1_knn, f1_nb)def print_best_classifier(f1_knn, f1_nb):if f1_knn > f1_nb:print(f"KNN has the higher F1 score of {f1_knn}")elif f1_knn < f1_nb:print(f"Naive Bayes has the higher F1 score of {f1_nb}")else:print(f"Both classifiers have the same F1 score of {f1_knn}")print_best_classifier(f1_knn, f1_nb)def best_f1_score(f1_knn, f1_nb):print(f"KNN: {f1_knn}, Naive Bayes: {f1_nb}")best_f1_score(f1_knn, f1_nb)

Question

Given the code below, your task is to select the function from the options provided that correctly completes the task by:i) Creating a function that determines which classifier (KNN or Naive Bayes) has a higher F1 score, or if they have equal scores.ii) Printing the name of the classifier along with its F1 score in the format: 'ClassifierName has the higher F1 score of Score' or 'Both classifiers have the same F1 score of Score'.iii) Executing the function.Select the appropriate code snippet from the options below.from sklearn.datasets import make_classificationfrom sklearn.model_selection import train_test_splitfrom sklearn.neighbors import KNeighborsClassifierfrom sklearn.naive_bayes import GaussianNBfrom sklearn.metrics import f1_score# Generate a synthetic datasetX, y = make_classification(n_samples=1000, n_features=20, n_classes=2, random_state=42)# Split the data into training and test setsX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.25, random_state=42)# Initialise KNN and Naive Bayes classifiersknn = KNeighborsClassifier(n_neighbors=5)nb = GaussianNB()# Train both classifiers on the training dataknn.fit(X_train, y_train)nb.fit(X_train, y_train)# Predict test set results for both classifiersy_pred_knn = knn.predict(X_test)y_pred_nb = nb.predict(X_test)# Calculate F1 scores for both classifiersf1_knn = f1_score(y_test, y_pred_knn)f1_nb = f1_score(y_test, y_pred_nb)# [Your Code Here]def compare_f1_scores(f1_knn, f1_nb):if f1_knn >= f1_nb:print(f"KNN has the higher F1 score of {f1_knn}")else:print(f"Naive Bayes has the higher F1 score of {f1_nb}")compare_f1_scores(f1_knn, f1_nb)def evaluate_classifiers(f1_knn, f1_nb):if f1_knn > f1_nb:print(f"Naive Bayes has the higher F1 score of {f1_nb}")elif f1_nb > f1_knn:print(f"KNN has the higher F1 score of {f1_knn}")else:print(f"Both classifiers have the same F1 score of {f1_nb}")evaluate_classifiers(f1_knn, f1_nb)def print_best_classifier(f1_knn, f1_nb):if f1_knn > f1_nb:print(f"KNN has the higher F1 score of {f1_knn}")elif f1_knn < f1_nb:print(f"Naive Bayes has the higher F1 score of {f1_nb}")else:print(f"Both classifiers have the same F1 score of {f1_knn}")print_best_classifier(f1_knn, f1_nb)def best_f1_score(f1_knn, f1_nb):print(f"KNN: {f1_knn}, Naive Bayes: {f1_nb}")best_f1_score(f1_knn, f1_nb)

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Solution

The correct function that completes the task as per the requirements is:

def print_best_classifier(f1_knn, f1_nb):
    if f1_knn > f1_nb:
        print(f"KNN has the higher F1 score of {f1_knn}")
    elif f1_knn < f1_nb:
        print(f"Naive Bayes has the higher F1 score of {f1_nb}")
    else:
        print(f"Both classifiers have the same F1 score of {f1_knn}")
print_best_classifier(f1_knn, f1_nb)

This function correctly compares the F1 scores of the KNN and Naive Bayes classifiers, and prints the name of the classifier with the higher score, or indicates if they have the same score.

This problem has been solved

Similar Questions

Given the following function fun1() Please select all the correct function callsdef fun1(name, age):    print(name, age)fun1("Emma", age=23)fun1(age =23, name="Emma")fun1(name="Emma", 23)fun1(age =23, "Emma")

You are currently evaluating two classifiers, K-Nearest Neighbours (KNN) and Naive Bayes, for a project that involves classifying texts into different categories based on their content. To finalise your model selection, you decide to visually compare their performance using a bar chart. Below is the setup for calculating the accuracy of both models on your dataset. Complete the code by adding the necessary lines to plot the accuracies in a bar chart:from sklearn.datasets import fetch_20newsgroupsfrom sklearn.model_selection import train_test_splitfrom sklearn.neighbors import KNeighborsClassifierfrom sklearn.naive_bayes import MultinomialNBfrom sklearn.feature_extraction.text import TfidfVectorizerfrom sklearn.metrics import accuracy_scoreimport matplotlib.pyplot as plt# Load datadata = fetch_20newsgroups(subset='all')X = data.datay = data.target# Create train-test splitX_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.2, random_state=42)# Vectorise text datavectorizer = TfidfVectorizer()X_train_tfidf = vectorizer.fit_transform(X_train)X_test_tfidf = vectorizer.transform(X_test)# Initialise classifiersknn = KNeighborsClassifier()nb = MultinomialNB()# Train classifiersknn.fit(X_train_tfidf, y_train)nb.fit(X_train_tfidf, y_train)# Predict and calculate accuracyknn_accuracy = accuracy_score(y_test, knn.predict(X_test_tfidf))nb_accuracy = accuracy_score(y_test, nb.predict(X_test_tfidf))# [Your code here] - Plot the accuracies in a bar chartWhich snippet of code will correctly plot the accuracies of KNN and Naive Bayes classifiers in a bar chart?acc_data = [knn_accuracy, nb_accuracy]labels = ['KNN', 'Naive Bayes']plt.barh(labels, acc_data)plt.xlabel('Accuracy')plt.ylabel('Classifier')plt.title('Accuracy Comparison')plt.show()plt.bar(['KNN', 'Naive Bayes'], [knn_accuracy, nb_accuracy])plt.xlabel('Classifier')plt.ylabel('Accuracy')plt.title('Classifier Accuracies')plt.show()plt.bar(['KNN', 'Naive Bayes'], [knn_accuracy, nb_accuracy])plt.xlabel('Accuracy')plt.ylabel('Classifier')plt.title('Classifier Accuracy Comparison')plt.show()plt.plot(['KNN', 'Naive Bayes'], [knn_accuracy, nb_accuracy])plt.xlabel('Classifier')plt.ylabel('Accuracy')plt.title('Comparison of Classifier Performance')plt.show()

Select the correct code. A. print("Programming is fun")    print("Python is fun") B. print("Programming is fun") print("Python is fun") C. print("Programming is fun) print("Python is fun") D.print("Programming is fun")print("Python is fun)Select one:DABC

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Which function is used to create a KNN classifier in scikit-learn?Answer areaKNeighborsClassifier()KNeighborsRegressor()KNN()NearestNeighbors()

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