Siemens Data Science Intern Interview Questions and Answers

The aptitude round required only a passing score, and included basic logical reasoning, verbal ability, and data visualization questions.

Q1. Most of the questions were based on Resume and mostly asked about ML .
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Q2. What is LDA and represent the LDA using diagram ?
Ans. 
LDA stands for Latent Dirichlet Allocation, a topic modeling technique used in natural language processing.
• LDA is a generative statistical model that allows sets of observations to be explained by unobserved groups that explain why some parts of the data are similar.

• It is commonly used in text mining to extract topics from a collection of documents.

• LDA assumes that each document is a mixture of a small number of topics...read more
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Q3. How do you implement a machine learning algorithm based on a given case study, and which algorithm do you choose and why?
Ans. 
To implement a machine learning algorithm based on a case study, choose an algorithm based on the type of data and problem to be solved.
• Understand the problem statement and the type of data available.

• Preprocess the data by handling missing values, encoding categorical variables, and scaling features.

• Split the data into training and testing sets.

• Choose an appropriate algorithm based on the problem type (classification, ...read more
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Q1. Lot about Statistics
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Q2. Machine Learning hyperparameters
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