ESP Prosearch Data Scientist Interview Questions and Answers

Explain dynamic programming with memoization

Q1. Where are you from, and why are you joining the company
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Q2. Why are you joining the company
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Java script, angular js, node questions

Q1. Asked about Company and why do you choose genpact?
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Q2. Questions on my projects and college experience
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Q1. Difference between supervised and unsupervised learning
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Supervised learning uses labeled data to train a model, while unsupervised learning uses unlabeled data.
• Supervised learning requires a target variable for training the model.

• Examples of supervised learning include classification and regression.

• Unsupervised learning finds patterns and relationships in data without a target variable.

• Examples of unsupervised learning include clustering and dimensionality reduction.
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Q2. What is sigmoid function
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Sigmoid function is a mathematical function that maps any real value to a value between 0 and 1.
• Used in machine learning for binary classification problems to produce probabilities

• Commonly used in logistic regression

• Has an S-shaped curve

• Equation: f(x) = 1 / (1 + e^(-x))
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Q1. Which GenAI projects I have worked on
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Q2. What is the context window in LLMs
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Context window in LLMs refers to the number of surrounding words considered when predicting the next word in a sequence.
• Context window helps LLMs capture dependencies between words in a sentence.

• A larger context window allows the model to consider more context but may lead to increased computational complexity.

• For example, in a context window of 2, the model considers 2 words before and 2 words after the target word fo
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Q3. What is top_k parameter
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top_k parameter is used to specify the number of top elements to be returned in a result set.
• top_k parameter is commonly used in machine learning algorithms to limit the number of predictions or recommendations.

• For example, in recommendation systems, setting top_k=5 will return the top 5 recommended items for a user.

• In natural language processing tasks, top_k can be used to limit the number of possible next words in a
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Q4. What are regex patterns in python
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Regex patterns in Python are sequences of characters that define a search pattern.
• Regex patterns are used for pattern matching and searching in strings.

• They are created using the 're' module in Python.

• Examples of regex patterns include searching for email addresses, phone numbers, or specific words in a text.
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Q5. What are iterators and tuples
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Iterators are objects that allow iteration over a sequence of elements. Tuples are immutable sequences of elements.
• Iterators are used to loop through elements in a collection, like lists or dictionaries

• Tuples are similar to lists but are immutable, meaning their elements cannot be changed

• Example of iterator: for item in list: print(item)

• Example of tuple: my_tuple = (1, 2, 3)
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Q6. Do I have REST API experience
Ans. 
Yes, I have experience working with REST APIs in various projects.
• Developed RESTful APIs using Python Flask framework

• Consumed REST APIs in data analysis projects using requests library

• Used Postman for testing and debugging REST APIs
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Q1. Questions related to machine learning
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Q1. Question related to machine learning, projects and case study.
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Q1. Salary discussion and position offered.
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Aptitude tests measure a person's logical reasoning skills and mental ability. During an aptitude test, test-takers must answer questions designed to assess their diagrammatic reasoning, mechanical reasoning, numerical reasoning and verbal reasoning skills.they test your ability,time management and accuracy during test ..

Awareness of Topics Relating to Your Background Is Crucial.
The most thought-provoking way to start a group discussion is to ask a question or add a famous and relevant quote to the topic. You can simply grab the attention of everyone as an initiator and thus lead a powerful group discussion by using a question on the topic.