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ServiceNow Data Scientist Interview Questions and Answers
ServiceNow Data Scientist Interview Experiences
2 interviews found
(3 Questions)
- Q1. About projects and then questions related to ML and DL. Mostly focused on DL part
- Q2. What is the difference between Adam optimizer and Gradient Descent Optimizer?
- Ans.
Adam optimizer is an extension to the Gradient Descent optimizer with adaptive learning rates and momentum.
Adam optimizer combines the benefits of both AdaGrad and RMSProp optimizers.
Adam optimizer uses adaptive learning rates for each parameter.
Gradient Descent optimizer has a fixed learning rate for all parameters.
Adam optimizer includes momentum to speed up convergence.
Gradient Descent optimizer updates parameters b...
- Q3. When to use Relu and when not?
- Ans.
Use ReLU for hidden layers in deep neural networks, avoid for output layers.
ReLU is commonly used in hidden layers to introduce non-linearity and speed up convergence.
Avoid using ReLU in output layers for regression tasks as it can lead to vanishing gradients.
Consider using Leaky ReLU or Sigmoid for output layers depending on the task.
ReLU is computationally efficient and helps in preventing the vanishing gradient prob...
Skills evaluated in this interview
I applied via Company Website and was interviewed in Dec 2023. There were 3 interview rounds.
Standard question from sql and python in hackerrank
(2 Questions)
- Q1. Reverse a linked list
- Ans.
Reverse a linked list by changing the direction of pointers
Start with three pointers: current, previous, and next
Iterate through the linked list, updating pointers to reverse the direction
Return the new head of the reversed linked list
- Q2. Question based on joins and subquery
(2 Questions)
- Q1. More question about project
- Q2. What do you know about genAI
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
Selected
I applied via Company Website and was interviewed in Dec 2024. There were 3 interview rounds.
Basic self evaluation test.
(3 Questions)
- Q1. What project I have completed and follow-up questions on that?
- Q2. How to handle class imbalance.
- Ans.
Handling class imbalance involves techniques like resampling, using different algorithms, and adjusting class weights.
Use resampling techniques like oversampling or undersampling to balance the classes.
Utilize algorithms that are robust to class imbalance, such as Random Forest, XGBoost, or SVM.
Adjust class weights in the model to give more importance to minority class.
Use evaluation metrics like F1 score, precision, r...
- Q3. Basic Python coding questions.
(2 Questions)
- Q1. Data-related questions.
- Q2. ML Ops questions.
Interview Preparation Tips
- Python
- MLOPS
Data Scientist Interview Questions & Answers
Automatic Data Processing (ADP)
Anonymous
posted on 21 Oct 2022
I applied via Approached by Company and was interviewed in Sep 2022. There were 3 interview rounds.
(1 Question)
- Q1. Basic DS question like how to handle missing features
(1 Question)
- Q1. Case study based questions
Interview Preparation Tips
Abhilasha Dimble
I applied via Naukri.com and was interviewed in Jan 2024. There was 1 interview round.
(1 Question)
- Q1. Asked about projects. What is classification? Is knn used for regression?how? decision tree working for regression and classification Is naive Bayes used for regression?how? LLM Docker Aws GenAI Code for ...
Interview Preparation Tips
Starts interview with lots of questions..
He interrupts me in every question's answer.. doesn't even ready listen my answers ...
Selected
I applied via LinkedIn and was interviewed before Apr 2023. There was 1 interview round.
(1 Question)
- Q1. How does fbpropher forecasting model works and how is can be used to forecsst trafffic
- Ans.
fbprophet is a forecasting model developed by Facebook that uses time series data to make predictions.
fbprophet is an open-source forecasting tool developed by Facebook's Core Data Science team.
It is based on an additive model where non-linear trends are fit with yearly, weekly, and daily seasonality, plus holiday effects.
fbprophet can be used to forecast traffic by providing historical data on traffic patterns and usi...
Interview Preparation Tips
I applied via Approached by Company and was interviewed in Aug 2023. There was 1 interview round.
(1 Question)
- Q1. How can Logistic regression be applied for multiclasstext classification
- Ans.
Logistic regression can be applied for multiclasstext classification by using one-vs-rest or softmax approach.
One-vs-rest approach: Train a binary logistic regression model for each class, treating it as the positive class and the rest as the negative class.
Softmax approach: Use the softmax function to transform the output of the logistic regression into probabilities for each class.
Evaluate the model using appropriate...
Skills evaluated in this interview
I applied via Referral and was interviewed in Nov 2019. There were 5 interview rounds.
Interview Questionnaire
5 Questions
- Q1. Hands on experience on visualization tools like Power BI, sisense
- Q2. About saas industry
- Q3. Case study giving a situation or a problem to solve w.r.t your profile
- Q4. Most complex solution delieved in previous company
- Ans.
Implemented a machine learning model to predict customer churn using advanced algorithms
Developed a predictive model using logistic regression, random forest, and gradient boosting
Utilized feature engineering techniques to improve model performance
Integrated the model into the company's CRM system for real-time predictions
- Q5. Questions on projects
Interview Preparation Tips
Selected
Learn and study about Aptitude like Quantitative aptitude, verbal and reasoning. Practice more and attend more mock test
(1 Question)
- Q1. What is SQL ? What are the market trend
- Ans.
SQL is a programming language used for managing and manipulating relational databases.
SQL stands for Structured Query Language.
It is used to communicate with and manipulate databases.
SQL can be used to create, modify, and retrieve data from databases.
It is widely used in data analysis and data management roles.
Some popular relational database management systems that use SQL include MySQL, Oracle, and SQL Server.
Skills evaluated in this interview
Data Analyst Interview Questions & Answers
Automatic Data Processing (ADP)
Anonymous
posted on 7 May 2024
(1 Question)
- Q1. Some questions on background, why this role
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ServiceNow Data Scientist Interview Process
based on 2 interviews
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