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I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
Clustering groups similar data points together based on features, while segmentation divides data into distinct groups based on predefined criteria.
Clustering is unsupervised learning, while segmentation is typically a supervised process.
Clustering is used in data mining and machine learning to discover patterns, while segmentation is often used in marketing to target specific customer groups.
Examples of clustering alg...
Segment customers based on travel habits, preferences, and spending patterns to offer a tailored travel friendly credit card.
Segment customers by frequency of travel (e.g. frequent flyers, occasional travelers)
Segment customers by preferred travel destinations (e.g. domestic vs international)
Segment customers by travel spending habits (e.g. luxury travelers, budget travelers)
Offer benefits and rewards tailored to each
HashMap in Java is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values.
HashMap uses hashing to store and retrieve key-value pairs.
It uses an array of linked lists to handle collisions.
The key's hash code is used to determine the index in the array where the key-value pair will be stored.
If two keys have the same hash code, they are stored in the same linked list.
HashMap allows o...
HashSet internally uses a HashMap to store elements as keys with a dummy value.
HashSet uses a HashMap to store elements as keys with a dummy value
It does not allow duplicate elements
Elements are stored based on their hash code
HashSet does not maintain insertion order
I applied via LinkedIn and was interviewed in Jul 2024. There were 2 interview rounds.
A White Noise series is a sequence of random variables that are uncorrelated and have a constant variance.
White Noise series is a fundamental concept in time series analysis.
Each variable in a White Noise series has a mean of zero and is independent of all other variables.
Examples of White Noise series include random fluctuations in stock prices or temperature readings.
I want to join CITI because of its reputation for innovation, global presence, and opportunities for career growth.
CITI is known for its innovative approach to banking and financial services
I am attracted to the global presence of CITI and the opportunity to work with diverse teams
I believe CITI offers great opportunities for career growth and development
I am impressed by CITI's commitment to diversity and inclusion in
What people are saying about Citicorp
I was interviewed in Jan 2024.
Citicorp interview questions for designations
I applied via Approached by Company and was interviewed before May 2023. There was 1 interview round.
Get interview-ready with Top Citicorp Interview Questions
I applied via Referral and was interviewed in Feb 2022. There was 1 interview round.
Managed a complex project to implement a new CRM system for a multinational company
Coordinated with multiple teams across different countries
Managed a budget of $5 million
Implemented the system within a tight deadline of 6 months
Provided training to over 500 employees
Ensured seamless integration with existing systems
Handled unexpected challenges and changes in scope
I applied via LinkedIn and was interviewed in Jan 2022. There were 2 interview rounds.
I applied via Company Website and was interviewed in May 2022. There were 2 interview rounds.
I applied via LinkedIn and was interviewed before Apr 2022. There were 5 interview rounds.
Was provided a company on which a case study (write-up) needes to preseneted. Had to prepare a 10-page doc along with excel spreads (covering Income statement, cash flow statement and balanace sheet).
I applied via Company Website and was interviewed before Apr 2022. There were 3 interview rounds.
SQL joins are used to combine data from two or more tables based on a related column.
There are four types of SQL joins: inner join, left join, right join, and full outer join.
Inner join returns only the matching rows from both tables.
Left join returns all the rows from the left table and matching rows from the right table.
Right join returns all the rows from the right table and matching rows from the left table.
Full ou...
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