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I applied via Recruitment Consulltant and was interviewed before Sep 2023. There was 1 interview round.
Simple Python Coding Test focused on pandas and sql queries as well
Top trending discussions
I applied via Referral and was interviewed in Jul 2024. There were 3 interview rounds.
I applied via Naukri.com and was interviewed before May 2023. There were 3 interview rounds.
Had three coding problems which was each
Window functions in SQL are used to perform calculations across a set of table rows related to the current row.
Window functions are used to calculate values based on a set of rows related to the current row.
They allow you to perform calculations without grouping the rows into a single output row.
Examples of window functions include ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE().
Different clustering algorithms include K-means, DBSCAN, Hierarchical clustering, and Gaussian Mixture Models.
K-means: partitions data into K clusters based on centroids
DBSCAN: density-based clustering algorithm
Hierarchical clustering: builds a tree of clusters
Gaussian Mixture Models: assumes data points are generated from a mixture of Gaussian distributions
I applied via Referral and was interviewed in Jul 2024. There were 3 interview rounds.
Create data frame, make histogram
I was interviewed in Jan 2024.
I applied via Campus Placement and was interviewed before Jul 2023. There were 2 interview rounds.
Questions on Prob Stats, ML
I applied via Naukri.com and was interviewed before May 2023. There were 3 interview rounds.
Had three coding problems which was each
Window functions in SQL are used to perform calculations across a set of table rows related to the current row.
Window functions are used to calculate values based on a set of rows related to the current row.
They allow you to perform calculations without grouping the rows into a single output row.
Examples of window functions include ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE().
Different clustering algorithms include K-means, DBSCAN, Hierarchical clustering, and Gaussian Mixture Models.
K-means: partitions data into K clusters based on centroids
DBSCAN: density-based clustering algorithm
Hierarchical clustering: builds a tree of clusters
Gaussian Mixture Models: assumes data points are generated from a mixture of Gaussian distributions
posted on 6 Sep 2021
I applied via Recruitment Consultant and was interviewed in Mar 2021. There were 4 interview rounds.
I am very familiar with Python, SQL, and ML models.
I have extensive experience using Python for data analysis and machine learning tasks.
I am proficient in writing SQL queries to extract data from databases.
I have worked with a variety of ML models, including regression, classification, and clustering.
I am familiar with popular ML libraries such as scikit-learn, TensorFlow, and Keras.
I have experience with data preproc...
ML classification models use various metrics to evaluate performance.
Common metrics include accuracy, precision, recall, F1 score, and AUC-ROC.
Accuracy measures the proportion of correct predictions.
Precision measures the proportion of true positives among all positive predictions.
Recall measures the proportion of true positives among all actual positives.
F1 score is the harmonic mean of precision and recall.
AUC-ROC me...
Outliers can significantly impact analysis. It's important to identify and handle them appropriately.
Visualize the data to identify outliers
Consider the source of the outliers and whether they are valid data points
Remove outliers if they are invalid or use robust statistical methods that are less sensitive to outliers
Document any handling of outliers in the analysis report
The organization used descriptive and inferential statistics to analyze and build models.
Descriptive statistics were used to summarize and describe the data, such as mean, median, and standard deviation.
Inferential statistics were used to make predictions and draw conclusions about the population based on the sample data, such as hypothesis testing and regression analysis.
The organization may have also used time series...
Interview experience
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