Here are the top 10 technical interview questions for a machine learning engineer:
1. What is the difference between supervised and unsupervised learning?
- This question aims to test your understanding of the fundamental types of machine learning algorithms. In supervised learning, the model is trained using labeled data, while in unsupervised learning, the model is trained on unlabeled data to discover patterns or structures.
2. Explain the bias-variance tradeoff.
- This question assesses your understanding of model performance. The bias-variance tradeoff suggests that a model with low bias may have high variance, and vice versa. Finding the right balance is crucial to prevent overfitting or underfitting the data.
3. What are some common regularization techniques in machine learning?
- This question aims to assess your knowledge of regularization. Common techniques include L1 and L2 regularization (e.g., Lasso and Ridge regression), dropout, and early stopping to prevent overfitting.
4. Describe how gradient descent works and its variations.
- This question tests your knowledge of optimization algorithms. Gradient descent is an iterative optimization algorithm used to minimize the loss function by moving in the negative direction of the gradient. Variations include batch gradient descent, stochastic gradient descent, and mini-batch gradient descent.
5. Explain the concept of cross-validation.
- This question assesses your understanding of model evaluation techniques. Cross-validation is a resampling procedure used to estimate the performance of a model. It involves dividing the data into k folds, using k-1 folds for training and the remaining fold for validation, and repeating the process k times.
6. What are the advantages and disadvantages of different evaluation metrics for classification models?
- This question tests your knowledge of evaluation metrics for classification models. Advantages and disadvantages vary for metrics like accuracy, precision, recall, F1-score, and ROC curve/AUC. Provide brief explanations for each and discuss their suitability for different scenarios.
7. How would you handle imbalanced datasets in a classification problem?
- This question assesses your understanding of addressing class imbalance. Possible approaches include oversampling the minority class, undersampling the majority class, using synthetic data generation techniques, or utilizing specialized algorithms like SMOTE and ADASYN.
8. Explain the concept of feature selection and dimensionality reduction.
- This question tests your knowledge of feature engineering techniques. Feature selection involves selecting a subset of relevant features, while dimensionality reduction seeks to transform high-dimensional data into a lower-dimensional space. Discuss methods such as correlation analysis, L1 regularization, and principal component analysis (PCA).
9. Describe the differences between bagging and boosting.
- This question aims to assess your understanding of ensemble methods. Bagging (bootstrap aggregating) involves training multiple models on bootstrapped data samples, while boosting iteratively trains models by focusing on previously misclassified instances. Discuss algorithms like Random Forest (bagging) and Gradient Boosting (boosting).
10. How would you handle missing data in a dataset?
- This question tests your knowledge of data preprocessing techniques. Possible approaches include deleting rows with missing values, imputing missing values using statistical techniques (e.g., mean, median, mode), or using advanced imputation methods like K-nearest neighbors or MICE.
Remember, while these are the top 10 technical interview questions for a machine learning engineer, it's equally important to understand the underlying concepts and demonstrate problem-solving skills during the interview.
'job interview FAQ' 카테고리의 다른 글
서버 개발자 신입 기초 기술면접 및 예상 답변 5가지 (1) | 2023.08.16 |
---|---|
TOP 5 job interview technical question & answer for junior DevOps engineer. (0) | 2023.08.14 |
TOP 5 job interview technical question & answer for DevOps engineer. (0) | 2023.08.14 |
TOP 5 job interview technical question & answer for server developer (0) | 2023.08.14 |
Top 10 job interview technical question and answer for python developer (0) | 2023.08.03 |