Implement Cosine Similarity Function for String Vectors
Company: Shopify
Role: Data Scientist
Category: Coding & Algorithms
Difficulty: Medium
Interview Round: Technical Screen
##### Scenario
Technical phone screen in Python; assess ability to implement similarity metric.
##### Question
Implement a Python function that computes the cosine similarity between two strings (treat each string as a bag-of-words vector).
##### Hints
Tokenize, count word frequencies, form vectors, dot product divided by magnitudes; handle empty inputs.
Quick Answer: This question evaluates understanding of vector-space similarity and text representation by asking for a cosine similarity computation over string-derived vectors, testing coding and algorithmic skills relevant to data science and text processing.
