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Design a recommendation system for finding friends on social networks.

What method would you use to find the dot product between two sparse matrices?

What can you tell me about the efficiency of SVM training in terms of time complexity? Could you explain the time efficiency of inference with a trained SVM model? Could you describe how kernel selection (Linear vs RBF) affects the time complexity of SVMs?

What constitutes the practice of outlier detection in the field of analytics?

Develop a service discovery mechanism for microservices in distributed environments.

Build a distributed platform for storing and serving digital assets.

Create a high-volume email sending service.

Could you elaborate on the treatment of categorical data when faced with high cardinality?

Can you devise an algorithm that finds all possible triplets in an input array whose sum adds up to a specified target value?

Can you describe the principal mechanism by which PCA operates?