Go-Jek Data Scientist Interview Questions and Answers

Q1. How to check model performance? Over fit vs underfit?
Ans. 
Model performance can be checked using various metrics such as accuracy, precision, recall, F1 score, and confusion matrix.
• Split data into training and testing sets

• Train the model on the training set

• Evaluate the model on the testing set using metrics such as accuracy, precision, recall, F1 score, and confusion matrix

• If the model performs well on the testing set, it is not overfit or underfit

• If the model performs well o...read more
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Python code for 45 mins. Pandas , group by , filtering questions

Q1. Mostly behavioral questions
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Q1. What is Bert and transformer
Ans. 
Bert and transformer are models used in natural language processing for tasks like text classification and language generation.
• Bert (Bidirectional Encoder Representations from Transformers) is a transformer-based model developed by Google for NLP tasks.

• Transformer is a deep learning model architecture that uses self-attention mechanisms to process sequential data like text.

• Both Bert and transformer have been widely use...read more
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Q2. NLP pre processing techniques
Ans. 
NLP pre processing techniques involve cleaning and preparing text data for analysis.
• Tokenization: breaking text into words or sentences

• Stopword removal: removing common words that do not add meaning

• Lemmatization: reducing words to their base form

• Normalization: converting text to lowercase

• Removing special characters and punctuation
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Q1. Basic questions
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Q2. Strength weakness
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Q1. How to check model performance? Over fit vs underfit?
Ans. 
Model performance can be checked using various metrics such as accuracy, precision, recall, F1 score, and confusion matrix.
• Split data into training and testing sets

• Train the model on the training set

• Evaluate the model on the testing set using metrics such as accuracy, precision, recall, F1 score, and confusion matrix

• If the model performs well on the testing set, it is not overfit or underfit

• If the model performs well o...read more
Answered by AI
Add your answer

Python code for 45 mins. Pandas , group by , filtering questions

Q1. Mostly behavioral questions
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