Bajaj Finserv
TCS Interview Questions and Answers
You have been given an array/list ‘arr’ of length ‘N’, which contains single digit elements at every index. Your task is to return the sum of all elements of the array. But the final sum sho...read more
Given a linked list having two pointers in each node. The first one points to the next node of the list, however, the other pointer is random and can point to any node of...read more
Given a API reference. You had to make a post request to the API with your personal details.
I was asked about joins, their types and data movements during join operations.
I was asked questions about Transactions and ACID properties,
Then he gave 2 tables and some SQL statements. I w...read more
No questions were asked.
I was asked if could relocate to Pune. We discussed about the work hours and days.
We discussed about the compensation
That's it
Q6. Machine Learning- 2 dependant and 6 independent variables are available, which algorithm we should use?
Use a regression algorithm like linear regression or decision tree regression.
Consider using linear regression if the relationship between variables is linear.
Decision tree regression can handle non-linear relationships between variables.
Evaluate the performance of different algorithms using cross-validation.
Consider the interpretability of the model when choosing an algorithm.
Q7. What is cross validation ?
Cross validation is a technique used to assess the performance of a predictive model by splitting the data into training and testing sets multiple times.
Cross validation helps to evaluate how well a model generalizes to new data.
It involves splitting the data into k subsets, training the model on k-1 subsets, and testing it on the remaining subset.
Common types of cross validation include k-fold cross validation and leave-one-out cross validation.
Cross validation helps to prev...read more
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