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How would you approach the problem of finding the largest sum subsequence in an array?

In your opinion, how crucial is feature selection when it comes to machine learning?

Could you provide some specific applications of Time Series Forecasting in the real world?

How would you describe the process of outlier detection?

How would you plot an ROC curve based on predicted probabilities and true labels?

What do you understand by bias and variance in machine learning, and how are they dissimilar?

What are some of the optimization techniques you’ve worked with or studied? What is your methodology for optimizing a function that includes a million variables? Can you describe the procedural steps of the simplex method used for optimization?

How would you compare and contrast supervised, unsupervised, and reinforcement learning techniques?

Can you explain the optimization techniques you have experience with?

How would you architect a user session management system for a large-scale web app?