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I applied via Recruitment Consulltant and was interviewed in Jul 2024. There were 2 interview rounds.
Logical reason around the question will be similar to the other companies
I applied via Walk-in and was interviewed in Apr 2024. There was 1 interview round.
Different types of joins are used in SQL to combine rows from two or more tables based on a related column between them.
INNER JOIN: Returns rows when there is at least one match in both tables.
LEFT JOIN (or LEFT OUTER JOIN): Returns all rows from the left table, and the matched rows from the right table.
RIGHT JOIN (or RIGHT OUTER JOIN): Returns all rows from the right table, and the matched rows from the left table.
FUL...
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I applied via Campus Placement
PCA is a dimensionality reduction technique, decision tree is a classification algorithm, and computer vision is a field of study focused on enabling computers to interpret and understand visual information.
PCA is used to reduce the number of variables in a dataset while retaining the most important information.
Decision trees are used to classify data based on a set of rules and conditions.
Computer vision involves usin...
Basics and Fundamentals
Seeking new challenges and opportunities for growth in a different environment.
Looking for a more challenging role to further develop skills
Interested in exploring new technologies and methodologies
Seeking a better work-life balance or company culture
Opportunity for career advancement or higher salary
Desire for a change in industry or focus area
2 coding questions - one on binary tree and list operations.
Xgboost is a popular machine learning algorithm known for its speed and performance in handling large datasets.
Xgboost stands for eXtreme Gradient Boosting, which is an implementation of gradient boosted decision trees.
It is widely used in Kaggle competitions and other machine learning tasks due to its efficiency and accuracy.
Xgboost is known for its ability to handle missing data, regularization techniques, and parall...
I applied via Company Website and was interviewed before Mar 2023. There was 1 interview round.
L1 & L2 regularization are techniques used in machine learning to prevent overfitting by adding a penalty term to the cost function.
L1 regularization adds the absolute values of the coefficients as penalty term (Lasso regression)
L2 regularization adds the squared values of the coefficients as penalty term (Ridge regression)
L1 regularization encourages sparsity in the model, while L2 regularization tends to shrink the c...
Error metric is a measure used to evaluate the performance of a model by comparing predicted values to actual values.
Error metric quantifies the difference between predicted values and actual values.
Common error metrics include Mean Squared Error (MSE), Root Mean Squared Error (RMSE), Mean Absolute Error (MAE), and R-squared.
Lower values of error metric indicate better performance of the model.
Error metric helps in und...
I applied via Company Website and was interviewed before Mar 2023. There were 3 interview rounds.
Yes, I have the right tech skills for the Data Scientist role.
Proficient in programming languages like Python, R, and SQL
Experience with data visualization tools like Tableau or Power BI
Knowledge of machine learning algorithms and statistical analysis techniques
Familiarity with big data technologies like Hadoop and Spark
Simple leetcode type sql, python questions
I was interviewed before Feb 2024.
Predictive modeling project
I applied via Company Website and was interviewed before Apr 2021. There were 3 interview rounds.
based on 2 interviews
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