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I applied via Company Website and was interviewed in Jul 2024. There were 5 interview rounds.
I applied via Company Website and was interviewed before Sep 2022. There were 2 interview rounds.
It was very stressful
I applied via Naukri.com and was interviewed in Apr 2022. There were 4 interview rounds.
To work towards a random forest, you need to gather and preprocess data, select features, train individual decision trees, and combine them into an ensemble.
Gather and preprocess data from various sources
Select relevant features for the model
Train individual decision trees using the data
Combine the decision trees into an ensemble
Evaluate the performance of the random forest model
Bias-variance trade-off is the balance between overfitting and underfitting in a model.
Bias is the error due to assumptions made in the learning algorithm. Variance is the error due to sensitivity to small fluctuations in the training set.
High bias leads to underfitting, while high variance leads to overfitting.
The goal is to find the sweet spot where the model has low bias and low variance, which results in good gener...
I am a data scientist with expertise in machine learning and data analysis.
I have a strong background in statistics and mathematics.
I am proficient in programming languages such as Python and R.
I have experience working with large datasets and extracting insights from them.
I have developed predictive models for various industries, including finance and e-commerce.
I am skilled in data visualization and communicating com
I have a strong background in data analysis and machine learning, with a proven track record of delivering actionable insights.
I have a Master's degree in Data Science and have completed several projects involving data analysis and predictive modeling.
I am proficient in programming languages such as Python and R, as well as in using tools like TensorFlow and Tableau.
I have experience working with large datasets and hav...
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 applied via Company Website and was interviewed in Dec 2024. There were 3 interview rounds.
Basic self evaluation test.
Handling class imbalance involves techniques like resampling, using different algorithms, and adjusting class weights.
Use resampling techniques like oversampling or undersampling to balance the classes.
Utilize algorithms that are robust to class imbalance, such as Random Forest, XGBoost, or SVM.
Adjust class weights in the model to give more importance to minority class.
Use evaluation metrics like F1 score, precision, r...
posted on 1 Jul 2024
Decision Trees are a popular machine learning algorithm used for classification and regression tasks.
Decision Trees are a tree-like structure where each internal node represents a feature or attribute, each branch represents a decision rule, and each leaf node represents the outcome.
They are easy to interpret and visualize, making them popular for exploratory data analysis.
Decision Trees can handle both numerical and c...
LLMs can be finetuned by adjusting hyperparameters, training on specific datasets, and using techniques like transfer learning.
Adjust hyperparameters such as learning rate, batch size, and number of layers to improve performance.
Train the LLM on domain-specific datasets to improve its understanding of specialized language.
Utilize transfer learning by starting with a pre-trained LLM model and fine-tuning it on a smaller...
posted on 13 Jun 2024
I applied via Company Website and was interviewed in May 2024. There was 1 interview round.
I applied via Campus Placement and was interviewed before Nov 2023. There were 2 interview rounds.
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