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Sql and pandas problems along mcqs on ML
Word2vec is a technique used to create word embeddings by training a neural network on a large corpus of text.
Word2vec is a shallow neural network model that learns to represent words as vectors in a continuous vector space.
It captures semantic relationships between words by placing similar words close together in the vector space.
There are two main architectures for Word2vec: Continuous Bag of Words (CBOW) and Skip-gr...
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I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.
Case study-this is about loan default prediction assignment
I applied via Referral and was interviewed before Feb 2023. There was 1 interview round.
Clustering is a technique used in data analysis to group similar data points together based on their characteristics.
Clustering is an unsupervised learning method.
It helps in identifying patterns and relationships in data.
Common clustering algorithms include K-means, hierarchical clustering, and DBSCAN.
Example: Grouping customers based on their purchasing behavior.
Example: Identifying different species of flowers based
To avoid overfitting, use techniques like cross-validation, regularization, and increasing training data.
Use cross-validation to evaluate model performance on unseen data
Apply regularization techniques like L1 or L2 regularization to penalize complex models
Increase the size of the training dataset to provide more diverse examples
Use feature selection or dimensionality reduction methods to reduce the complexity of the m...
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I applied via Campus Placement and was interviewed in Aug 2023. There was 1 interview round.
Apptitude + two easy level coding questions , behavioural questions,
I applied via Campus Placement and was interviewed before Jul 2023. There were 4 interview rounds.
Basic questions like stats, probability etc
Scenario based question
posted on 10 Jan 2025
I was a test in our college of about 45min revolving around aptitude.
Few basic coding questions.
Common ways to evaluate Time Series model include AIC, BIC, RMSE, MAE, ACF, PACF, etc.
Use Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC) to compare models
Calculate Root Mean Squared Error (RMSE) and Mean Absolute Error (MAE) to assess model accuracy
Analyze Autocorrelation Function (ACF) and Partial Autocorrelation Function (PACF) to check for autocorrelation in residuals
Use techniques like feature selection, regularization, PCA, and VIF to handle multicollinearity.
Perform feature selection to choose the most relevant variables for the model.
Apply regularization techniques like Lasso or Ridge regression to penalize high coefficients.
Utilize Principal Component Analysis (PCA) to reduce dimensionality and decorrelate variables.
Check for Variance Inflation Factor (VIF) to identify highly
TF IDF is a technique used in NLP to measure the importance of a word in a document within a collection of documents.
TF IDF stands for Term Frequency-Inverse Document Frequency.
It is used to determine how important a word is in a document relative to a collection of documents.
TF IDF is calculated by multiplying the term frequency (TF) of a word in a document by the inverse document frequency (IDF) of the word across al...
I applied via Job Portal and was interviewed in Dec 2021. There were 2 interview rounds.
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