ZS Data Scientist Interview Questions and Answers

It was on HackerRank

Building a reward points model.

Math problem verbal aptitude as well as directional questions ,work time questions

Basic questions were asked,not so tough

Q1. Introduction about myself
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Q2. Guesstimates questions and puzzles
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It had python based questions

It had ml based questions

Q1. What is the transformer model
Ans. 
The transformer model is a deep learning architecture designed for natural language processing tasks, utilizing self-attention mechanisms.
• Introduced in the paper 'Attention is All You Need' by Vaswani et al. in 2017.

• Uses self-attention to weigh the importance of different words in a sentence.

• Replaces recurrent neural networks (RNNs) for better parallelization and efficiency.

• Key components include the encoder and decode...read more
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Q2. How to reduce hallucination in chatbot
Ans. 
To reduce hallucination in chatbots, implement strategies like fine-tuning, context management, and user feedback integration.
• Fine-tune the model on domain-specific data to improve accuracy. For example, train on customer service transcripts for a support bot.

• Implement context management to maintain conversation history, ensuring the bot understands previous interactions.

• Use reinforcement learning from human feedback (...read more
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