What is a good way to detect anomalies?
Datenwissenschaftler Interview Questions
Datenwissenschaftler Interview Questions
In einem Vorstellungsgespräch für Datenwissenschaftler stellen Arbeitgeber wahrscheinlich Fragen zur Beurteilung Ihrer Kompetenzen in Datenmodellierung, Problemlösung und Programmierung. Bereiten Sie sich darauf vor, allgemeine Fragen zu beantworten, die Ihre Kenntnisse in Statistik und Datenwissenschaft testen sollen. Sie müssen evtl. auch offene Fragen beantworten, mit denen Ihre Kreativität, Kommunikationsfähigkeiten und Ihre Ausbildung in Datenmodellierung und Programmierung geprüft werden.
Typische Bewerbungsfragen als Datenwissenschaftler (m/w/d) und wie Sie diese beantworten
Frage 1: Welche Verfahren der Datenmodellierung bevorzugen Sie und warum?
Frage 2: Wie würden Sie gefälschte Instagram-Konten feststellen, mit denen Verbraucher betrogen werden sollen?
Frage 3: Beschreiben Sie Umstände, die in Python eine Liste, ein Tuple oder Set erfordern.
33,626 datenwissenschaftler interview questions shared by candidates
The coding test was 'ok' but I didn't pass. 1 ML multiple choice question 2 SQL questions task 1 Algo question
Probability questions and simple math questions
What is precision and recall? Asked how does densenet and gradient boosting algos work? Asked to code up nn
Some features in model to predict whether the customer will complete order at this time.
Details about random forest that applied on regression problem.
Two Brain Teaser questions, very basic SQL questions and standard Machine Learning/Data Science questions
Foi perguntado o maior desafio como cientista de dados.
background and some details of take-home some questions are very vague, and really not sure what he want... many questions are open ended for me, bc the take-home is not well-designed from my perspective ... it would be better to ask questions related to statistics or machine learning directly... they don't use any fancy ml techniques, but emphasis the statistics
1 coding question : Write a function for sampling from a multimodal distribution. Your inputs are: Keys (i.e. green, red, blue) Weights (i.e. 2, 3, 5.5) N (number of samples drawn from this distribution ( i.e. n=5) Output : list of n keys: Example n = 5: [blue, blue, blue, red, green] Hint: draw a rv of uniform distribution. Calculate the normalized weights for each key. - Machine Learning question : we have a list of items and how many times each item is purchased (range from 10 to 100000 times). For each user the probability of user buying each item is uniform (same across all users). Let’s say we have an item "A" that has been recommended 10 times, has been purchased 10 times. What is the long term probability of being purchased for this item ?
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