Explain how you would use natural language processing (NLP) to improve the search functionality of a content-rich website.

Instruction: Outline the steps and methodologies you would employ to enhance search relevance and user experience.

Context: This question gauges the candidate's expertise in NLP and their ability to apply it to enhance search algorithms and improve user interaction.

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I would treat search as a retrieval and ranking problem, not just a text matching problem. First I would understand the query patterns: exact title lookups, vague exploratory queries, typo-heavy traffic, entity search, and longer natural-language requests. Different query types usually need different strengths from the stack...

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