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Easy to answer ,asked mostly on sql and other ml topics
SQL is a relational database management system, while NoSQL is a non-relational database management system.
SQL databases are table-based and have a predefined schema, while NoSQL databases are document-based, key-value pairs, graph databases, or wide-column stores.
SQL databases are good for complex queries and transactions, while NoSQL databases are better for hierarchical data storage and real-time web applications.
Ex...
Regularization in machine learning is a technique used to prevent overfitting by adding a penalty term to the model's loss function.
Regularization helps in reducing the complexity of the model by penalizing large coefficients.
Common types of regularization include L1 (Lasso) and L2 (Ridge) regularization.
L1 regularization adds the absolute value of the coefficients to the loss function, promoting sparsity.
L2 regulariza...
Top trending discussions
I was interviewed in Sep 2017.
A sorting algorithm is a method of arranging elements in a specific order.
Sorting algorithms can be categorized as comparison-based or non-comparison-based.
Common sorting algorithms include bubble sort, insertion sort, selection sort, merge sort, quicksort, and heapsort.
Efficiency of sorting algorithms is measured by their time complexity, space complexity, and stability.
Example: Sorting an array of strings in alphabet
I applied via Recruitment Consultant and was interviewed before Oct 2020. There were 4 interview rounds.
6 Sigma is a data-driven methodology for improving business processes and reducing defects.
It aims to achieve a level of quality where the probability of a defect is 3.4 parts per million or less.
It involves five phases: Define, Measure, Analyze, Improve, and Control (DMAIC).
It is widely used in industries such as manufacturing, healthcare, and finance.
It emphasizes on statistical analysis and measurement to identify a...
I applied via Company Website and was interviewed before Apr 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
I applied via Referral and was interviewed in Nov 2024. There were 3 interview rounds.
There were 4 sections and first one was quant, second one was logical, third was English and finally 3 coding questions in last section
4 codes and 5 technical questions
Multi threading is the ability of a CPU to execute multiple threads concurrently.
Allows for parallel execution of tasks, improving performance
Each thread has its own stack and runs independently
Threads can communicate and synchronize using shared memory
Examples: running multiple tasks simultaneously in a web server, processing data in parallel
Polymorphism is the ability of a single function or method to operate on different types of data.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
It enables a single interface to be used for different data types.
Examples include method overloading and method overriding in object-oriented programming.
Inner join returns only the rows that have matching values in both tables, while outer join returns all rows from both tables.
Inner join: returns rows with matching values in both tables
Outer join: returns all rows from both tables, with NULL values where there is no match
Example: Inner join - SELECT * FROM table1 INNER JOIN table2 ON table1.id = table2.id
Example: Outer join - SELECT * FROM table1 LEFT OUTER JOIN table
I applied via LinkedIn
The probability of bit error in a binary symmetric channel can be calculated using the formula P = 1/2 * erfc(sqrt(Eb/N0)), where erfc is the complementary error function.
Probability of bit error in a binary symmetric channel is influenced by the signal-to-noise ratio (Eb/N0).
The error function erfc is used to calculate the probability of bit error.
The formula for calculating the probability of bit error is P = 1/2 * e
Binary tree traversal question
To add a node at the nth position in a linked list
Create a new node with the data to be inserted
Traverse the linked list to the (n-1)th node
Adjust the pointers to insert the new node at the nth position
I applied via Referral and was interviewed in Apr 2023. There were 2 interview rounds.
Yes, I have experience with machine learning through coursework and personal projects.
Completed coursework in machine learning algorithms
Developed a recommendation system using collaborative filtering
Utilized neural networks for image classification tasks
I applied via LinkedIn and was interviewed in Sep 2024. There were 2 interview rounds.
It was a combination of Maths and Electronics basics.
I am a recent graduate with a degree in Computer Science and a passion for coding and problem-solving.
Recent graduate with a degree in Computer Science
Passionate about coding and problem-solving
Strong communication and teamwork skills
I have worked on various projects including a web development project, a data analysis project, and a machine learning project.
Developed a website for a local business using HTML, CSS, and JavaScript.
Conducted data analysis on customer feedback data to identify trends and make recommendations for improvement.
Implemented a machine learning algorithm to predict customer churn for a telecom company.
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