Sustainability Economics ml engineer Interview Questions and Answers

Q1. What is decision tree
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A decision tree is a flowchart-like structure where each internal node represents a feature, each branch represents a decision, and each leaf node represents an outcome.
• Decision trees are a popular machine learning algorithm used for classification and regression tasks.

• They are easy to interpret and visualize, making them useful for understanding the decision-making process.

• Decision trees work by recursively splitting ...read more
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Q2. What is boosting
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Boosting is a machine learning ensemble technique that combines multiple weak learners to create a strong learner.
• Boosting iteratively improves the performance of a model by focusing on the mistakes made by previous models.

• Popular boosting algorithms include AdaBoost, Gradient Boosting, and XGBoost.

• Boosting is often used in classification and regression problems to improve accuracy and reduce bias.
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Was of 1 hour, got asked about 3 sum as well as a medium level problem

Q1. Releated to IOS
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Q2. About multithreading, deep dive
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There were 3 coding questions totally based on dsa- hard

Q1. Vertical Traversal
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Q2. Find the node with shortest distance
Ans. 
Use Dijkstra's algorithm to find the node with the shortest distance in a graph.
• Implement Dijkstra's algorithm to calculate the shortest distance from a starting node to all other nodes in the graph.

• Select the node with the smallest distance that has not been visited yet as the current node.

• Update the distances of neighboring nodes from the current node if the new distance is smaller than the previously recorded distan...read more
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Q1. Question based on oops
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Q2. Question based on OS
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Q1. About HT and LT Transmission , Distribution and Backup Systems
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Q2. About work place and culture
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Q1. About Binary search
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Q1. About project and ER diagram
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3 questions easy-medium level leetcode problem I solved 2 completely and 3rd question partially (9/15 test cases passed) to move on to 2nd round

Q1. Implement an app similar to splitwise
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1. PEAK ELEMENT QUESTION.
2. COIN DENOMINATION