Lead Data Scientist sollicitatievragen
358
Sollicitatievragen voor Lead Data Scientist gedeeld door sollicitantenMeest gestelde sollicitatievragen
What does SQL stand for
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Structured Query Language
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Structured query language
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Structured query language
How many distinct projects are there?
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select count(*) from projects OR select distinct count(*) from projects Depends on your data structure and data health what is considered a "distinct" project. Minder
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My guess is you are not white. I have several friends also had the same experiences with Dashlane because they are Chinese and Indian Minder
None really. All was expected
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Check if you they didn't take advantage of you. I have a few friends who interviewed for them. And they use their interview process to get free consultation from a qualified person and never hire!! Minder
They have shared use case with data and wanted to understand how will you address it. What you can infer from data which helps business.
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Shared analysis on sample data and showed how can we address such use cases.
Detailed discussion of past projects in areas relevant to the current project the managers are working on.
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I picked put several different projects from previous contracts that are most similar to 3 or 4 areas of the problems they are trying to solve and implement. I provided them with past research papers, technical publications, and sample code on Github for the managers to review. Minder
Implement k-means algorithm. Inputs: 1. List of n lists, of some general length d. Each represents a point in a d-dimensional space. 2. k: number of clusters No use of any ml-libraries of course.
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you can find it online easily...
SQL: Lag and Lead function, Case When condition. Spark: Tell about a REAL WORLD problem not from the INTERNET But that you have faced while executing job on a spark cluster.
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When I started answering about the question, the interviewer didn't bother to listen he said I want Platform agnostic answers or answers only based on open source spark. When I tried answering him he quickly changed his stance and jumped to HDI and EMR distributions and started talking about partitions and cores. The person had no clue what he wanted to ask only focused on his side. I am sure its a good company but the interviewer should be clear what he is looking for and what are his questions. Minder