Coding : Pandas grouping function, List operations SQl : Find sales progression year on year using SQl and pandas Kmeans clustering working , imbalanced data set, loss function, Random forest pruning, Hyperparameter tuning, OOPs concept, python List and set , DBSCAN hyperparameter.
Why are you looking at a company like Sigma (with your background in academia)?
Tell me about a side project you worked on - what motivated the choice, what skills you learned, the overall outcome.
calcolare la crescita del brand A, avendo la sua market share l'anno precedente e l'anno successivo e le market share e crescita del brand B.
nel test online mi è stato chiesto il problema su voli fra località con diversi fusi orari
Domanda di probabilità nel girare tre monete e calcolare cosa succedeva agli step successivi
Tell me about yourself?
Standard questions.
[home task] You get the data and you have to extract from it a lot of stuff. SQL queries, python code in notebooks. I cant share much more details but task was very time consuming
Describe one common problem when training deep neural networks.
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