Fragen im Bewerbungsgespräch: Data scientist in Deutschland | Glassdoor.de

Fragen im Vorstellungsgespräch: Data scientist in Deutschland

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Fragen aus Vorstellungsgesprächen für data scientist, von Bewerbern geteilt

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Given the set of integers, find all the pairs that yields the specific sum.

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The main portion of the interview is their HackerRank assignment. I was told I received the assignment for Data Engineers.

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Sie lösen Sie ein Problem, wenn Sie das Problem nicht lösen können?

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The first round you will asked the following question. 1. Explain about the tera sort that happens between the map and reduce phase in hadoop job. 2. Explain about class loader, can you have more than one class loader in jvm. 3. Explain how indexing in implemented in sql databases, be prepared to take about b-tree and tree balancing algorithm. 4. How does java guarantee the hashmap look up in O(1). Round 2 1. You will asked to write java streaming code to parse infinite input while keeping memory low the output should predefined length of random sample.

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Can the Scrum agile system be used for data science tasks?

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In the technical interview, I was asked too explain statistics orally, by conference video. For example, what are average and median, the difference between them and their applications.

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Give me an example of great feedback you received.

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What is a window function? Joins vs subqueries. Outer vs inner joins. Infrastructure based questions.

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Calculate and visualize asset lifetime value given straight line depreciation method for latest Macbook. Assume cost of 1499 euro and 3 years asset lifetime. Describe other depreciation methods and their advantages/disadvantages for this specific asset type.

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