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Gradient Descent is an optimization algorithm used to minimize the error of a model by adjusting its parameters iteratively.
Gradient Descent is used in machine learning to find the optimal parameters for a model by minimizing a cost function.
It works by calculating the gradient of the cost function at a given point and moving in the opposite direction to reach the minimum.
There are different variations of Gradient Desc...
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I applied via Naukri.com and was interviewed before May 2023. There was 1 interview round.
I applied via Recruitment Consulltant and was interviewed in Mar 2024. There were 3 interview rounds.
Epsilon offers cutting-edge technology, diverse projects, and a collaborative work environment.
Epsilon provides opportunities to work with advanced technology and tools in data science.
The company offers a wide range of projects across various industries, allowing for diverse and challenging work.
Epsilon fosters a collaborative work environment, encouraging teamwork and knowledge sharing among data scientists.
The compa...
posted on 16 Jan 2023
I applied via Naukri.com and was interviewed before Jan 2022. There were 3 interview rounds.
I appeared for an interview in Jul 2024.
Case study was given
Company XYZ is a leading technology firm specializing in data analytics and consulting services.
Founded in 2005 by John Smith
Headquartered in San Francisco, CA
Provides services to Fortune 500 companies such as Google and Amazon
Known for innovative solutions in predictive analytics and machine learning
SEM stands for Search Engine Marketing, which is a form of online marketing that involves promoting websites by increasing their visibility in search engine results pages.
SEM involves using paid advertising to increase a website's visibility in search engine results pages
Common SEM tactics include pay-per-click (PPC) advertising and search engine optimization (SEO)
Examples of SEM platforms include Google Ads, Bing Ads,
ROI stands for Return on Investment, a financial metric used to evaluate the profitability of an investment.
ROI is calculated by dividing the net profit of an investment by the initial cost of the investment and expressing it as a percentage.
It helps in determining the efficiency and profitability of an investment.
For example, if you invest $100 in a project and earn $120 in return, the ROI would be 20% ($20 profit div
Paid ads are online advertisements that businesses pay for to promote their products or services.
Paid ads appear on search engines, social media platforms, websites, and apps.
Businesses bid on keywords or target specific demographics to reach their desired audience.
Examples include Google Ads, Facebook Ads, and sponsored content on Instagram.
I appeared for an interview before Mar 2023.
CTR stands for Click-Through Rate in digital media marketing.
CTR is a metric used to measure the success of an online advertising campaign.
It is calculated by dividing the number of clicks on an ad by the number of times the ad was shown (impressions) and multiplying by 100.
For example, if an ad received 100 clicks and 10,000 impressions, the CTR would be 1%.
A higher CTR indicates that the ad is resonating well with th
Quality score is a metric used to evaluate the quality of something, often used in advertising to measure the relevance and performance of ads.
Quality score is typically used in online advertising platforms like Google Ads to measure the relevance and performance of ads.
It is based on factors such as click-through rate, ad relevance, and landing page experience.
Improving quality score involves optimizing ad content, ta...
Keywords to type in Google for visiting London
London attractions
London hotels
London restaurants
London weather
Probability of a horse going out of a chessboard in 'n' steps.
The total number of possible moves for a horse is 8.
The probability of going out of the board depends on the position of the horse.
For example, if the horse is at a corner, the probability of going out of the board is higher.
The probability can be calculated using combinatorics and geometry.
I applied via Campus Placement
I am an avid traveler and have visited over 20 countries
I love experiencing new cultures and trying new foods
I have backpacked through Europe and Asia
I have volunteered in orphanages in Cambodia and Nepal
Mobile advertising platform
Adtech
Mobile marketing
App monetization
Maximum sub sequence sum in an array
Use Kadane's algorithm
Initialize max_so_far and max_ending_here to 0
Iterate through the array and update max_ending_here and max_so_far
Return max_so_far
Endianness refers to the byte order of a system. It determines how multi-byte data types are stored in memory.
Little-endian systems store the least significant byte first, while big-endian systems store the most significant byte first.
Endianness can affect the way data is transmitted between systems.
To determine the endianness of a system, you can use the byte order mark (BOM) or write a test program that checks the by...
Sort an array of 0's and 1's only.
Use two pointers, one at the beginning and one at the end of the array.
Swap 0's from the beginning with 1's from the end until the pointers meet.
Alternatively, use a counting sort algorithm to count the number of 0's and 1's and then reconstruct the array.
Heaps are data structures used to efficiently find the maximum or minimum element in a collection.
Max heap: parent nodes are always greater than or equal to child nodes
Min heap: parent nodes are always smaller than or equal to child nodes
Heaps are commonly used in priority queues and sorting algorithms
Heap operations include insert, delete, and extract max/min
Example: An array [3, 8, 2, 5, 1, 4, 6] can be represented a
Find 3 numbers in an array where a+b=c.
Loop through the array and check for all possible combinations of a and b.
Use a hash table to store the values of a and b, and check if c is present in the hash table.
Sort the array and use two pointers to find a and b, and then check if their sum equals c.
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Epsilon
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