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ML Knowledge
2 years ago
What do the training and loss graphs represent in the realm of neural networks? How do different loss functions affect the shape of the loss graph, and what are some frequently used ones? How do the training and loss graphs differ, and how do they play a crucial role in optimizing and improving model performance?
Data Scientist

Mayo Clinic

Thumbtack

Glovo

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2 years ago
ML Knowledge
2 years ago
When designing machine learning solutions, where does CNN fit in, and what kind of problems does it tackle?
Data Scientist

Mayo Clinic

Netflix

Reddit

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2 years ago
Behavioral
2 years ago
What are some of your key objectives from the Data Scientist role at Mayo Clinic?
Data Scientist

Mayo Clinic

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2 years ago
Statistics
3 years ago
What is the significance of the Wilk-Shapiro measure in detecting whether a dataset is normally distributed or not?
Data Scientist

Mayo Clinic

Coursera Logo

Coursera

Nutanix Logo

Nutanix

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3 years ago
Behavioral
3 years ago
Give an overview of your work experience in one minute
Data ScientistProgram ManagerFrontend EngineerFull Stack Software Engineer

Mayo Clinic

Amazon Logo

Amazon

Palantir Technologies Logo

Palantir Technologies

+18

Hi, my name is XXXX and I have a total of 7 years of experience across product and analytics teams. Currently, I work as a Product Manager at Gameskraft, where I collaborate within two pods: Gameplay Experience (focused on improving user experience during gameplay) and Monetisation (focused on increasing company revenue through new initiatives). I work closely with business, design, and tech teams to deliver outcomes. Additionally, I manage a team of two data analysts who report directly to me. I have also been exposed to AI projects, including developing an AI conversational bot for our organisation to reduce customer support costs.

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3 years ago
Behavioral
3 years ago
Tell me about a time you've had to change the way you work.
Data ScientistData Science ManagerML Engineering ManagerData Engineering Manager

Mayo Clinic

Asana Logo

Asana

Microsoft Logo

Microsoft

+6

l, I initially built automation scripts for trade reconciliations and reporting using standalone Python and UNIX-based cron jobs. These worked well for smaller data volumes, but as our operations scaled across global teams in London, Hong Kong, and the Bahamas, performance and maintainability became a bottleneck.

I realized I needed to adapt my workflow to better support large-scale, distributed processes. So, I changed how I worked by migrating critical pipelines from PostgreSQL and flat scripts into a more robust ETL framework using Databricks and Delta Lake. I restructured batch processes into streaming jobs and modularized the Python code to be production-grade. I also started using Kafka and Kubernetes to improve system reliability and orchestration.

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3 years ago
Statistics
3 years ago
Could you elaborate on some of the reasons that could be responsible for the discrepancy between the control and variant groups in an A/B test?
Data Scientist

Mayo Clinic

Stripe Logo

Stripe

Palo Alto Networks Logo

Palo Alto Networks

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3 years ago
Behavioral
3 years ago
Give an example of when you made a decision that was unpopular.
Data ScientistTechnical Program ManagerSoftware EngineerProduct Manager

Mayo Clinic

Square Logo

Square

Snap Logo

Snap

+11

“One night flying into Newark, we were on final approach after a long day with gusty winds, turbulence, and low visibility. The captain was flying, and I was pilot monitoring, keeping an eye on airspeed, alignment, and anything that might require a callout. Everyone was ready to be on the ground — the passengers, the crew — it had been a long day, and the momentum was to just get the airplane landed.

As we crossed the runway threshold, the airplane hit a strong burst of turbulence and refused to settle. In that split second, I knew what had to be done, but I also knew it wouldn’t be the popular choice. A go-around meant a delay, frustrated passengers, and possibly second-guessing from the crew. But safety has to come first, so I immediately called ‘Go-around.’ The captain executed it smoothly, and we climbed away, briefed again, and landed safely on the second attempt.

Afterward, the captain thanked me for speaking up and said he completely agreed with the decision. It reinforced for me that as pilots, we can’t let convenience or the desire to finish cloud our judgment. Sometimes the right call isn’t the popular one, but it’s always the right call when it keeps everyone safe.”


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3 years ago
ML Knowledge
3 years ago
What's your strategy for dealing with high-dimensional datasets in a machine learning problem?
Data Scientist

Mayo Clinic

Atlassian Logo

Atlassian

Visa Logo

Visa

From the data, I need to know how research questions could be extracted from a high-dimensional dataset. Once which model should be used is decided, then I feed the dataset into the machine learning model. The problem is that in a high-dimensional dataset, the number of samples is smaller than the predictors, the control variables. It is important to drop the unrelated variables, and make sure the model predicts well with the given dataset.

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3 years ago
Behavioral
3 years ago
Tell me about a time when you took a risk.
Data ScientistFrontend EngineerProgram ManagerFull Stack Software Engineer

Mayo Clinic

DoorDash Logo

DoorDash

Stripe Logo

Stripe

+1

There was I time I had to choose between technologies for our clusters: nomad or kubernetes. I did not know back then that one of them would become so much popular than the other, but because of a good research I was able to pick better option

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3 years ago

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Mayo Clinic

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Behavioral

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*All interview questions are submitted by recent Mayo Clinic Data Scientist candidates, labelled and categorized by Prepfully, and then published after being verified by Data Scientists at Mayo Clinic.

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