TCS iON Non Voice Executive Interview Questions and Answers

To find the second maximum number in a list, sort the list in descending order and return the second element.

• Sort the list in descending order

• Return the second element in the sorted list

Loops in Informatica are used to iterate over a set of data or perform repetitive tasks.

• Loops in Informatica can be implemented using the 'Expression' or 'Router' transformations.

• They are useful for processing multiple rows of data in a mapping.

• Common types of loops include 'While' and 'For' loops.

• Loops can help in performing complex data transformations and validations.

Random forest is an ensemble learning method that builds multiple decision trees and merges them to improve accuracy and prevent overfitting.

• Random forest is a type of ensemble learning method.

• It builds multiple decision trees during training.

• Each tree is built using a subset of the training data and a random subset of features.

• The final prediction is made by averaging the predictions of all the individual trees.

• Random...read more

Boosting is a machine learning ensemble technique where multiple weak learners are combined to create a strong learner.

• Boosting is an iterative process where each weak learner is trained based on the errors of the previous learners.

• Examples of boosting algorithms include AdaBoost, Gradient Boosting, and XGBoost.

• Boosting is used to improve the accuracy of models and reduce bias and variance.