Coforge Data Scientist Interview Questions and Answers

Q1. Coding question of finding index of 2 nos. having total equal to target in a list, without using nested for loop? l= [2,15,5,7] t= 9 output》》[0,3]
Ans. 
Finding index of 2 numbers having total equal to target in a list without nested for loop.
• Use dictionary to store the difference between target and each element of list.

• Iterate through list and check if element is in dictionary.

• Return the indices of the two elements that add up to target.
Answered by AI
Add your answer
Q2. What is random forest, knn?
Ans. 
Random forest and KNN are machine learning algorithms used for classification and regression tasks.
• Random forest is an ensemble learning method that constructs multiple decision trees and combines their outputs to make a final prediction.

• KNN (k-nearest neighbors) is a non-parametric algorithm that classifies new data points based on the majority class of their k-nearest neighbors in the training set.

• Random forest is us...read more
Answered by AI
Add your answer

Q1. Ll coding on python dictionary
Ans. 
Python dictionaries are versatile data structures for storing key-value pairs, enabling efficient data retrieval and manipulation.
• Dictionaries are created using curly braces: example = {'key': 'value'}

• Access values using keys: example['key'] returns 'value'.

• Dictionaries are mutable; you can add or remove items: example['new_key'] = 'new_value'.

• Keys must be unique and immutable (e.g., strings, numbers, tuples).

• Use metho...read more
Answered by AI
Add your answer
Q2. Find unique keys in 2 dictionaries
Ans. 
To find unique keys in 2 dictionaries.
• Create a set of keys for each dictionary

• Use set operations to find the unique keys

• Return the unique keys
Answered by AI
Add your answer
Q3. Aws ec2 model deployment procedure
Ans. 
AWS EC2 model deployment involves creating an instance, installing necessary software, and deploying the model.
• Create an EC2 instance with the desired specifications

• Install necessary software and dependencies on the instance

• Upload the model and any required data to the instance

• Deploy the model using a web server or API

• Monitor the instance and model performance for optimization
Answered by AI
Add your answer
Q4. Overloading concept of oop
Ans. 
Overloading is the ability to define multiple methods with the same name but different parameters.
• Overloading allows for more flexibility in method naming and improves code readability.

• Examples include defining multiple constructors for a class with different parameter lists or defining a method that can accept different data types as input.

• Overloading is resolved at compile-time based on the number and types of argume...read more
Answered by AI
Add your answer

Questions related to Pandas, List, String

Q1. 1) How decision tree works 2) what are the parameters used in OpenCV?
Ans. 
Decision tree is a tree-like model used for classification and regression. OpenCV parameters include image processing and feature detection.
• Decision tree is a supervised learning algorithm that recursively splits the data into subsets based on the most significant attribute.

• It is used for both classification and regression tasks.

• OpenCV parameters include image processing techniques like smoothing, thresholding, and mor...read more
Answered by AI
Add your answer