Instruction: Discuss the complexities and strategies for developing NLP systems that work across multiple languages.
Context: This question gauges the candidate's understanding of the nuances in language processing and their ability to devise solutions for a global audience.
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The way I'd explain it in an interview is this: The main challenges are uneven data availability, tokenizer coverage, language-specific grammar, domain mismatch, evaluation gaps, and cultural nuance. A multilingual system that works well in English may degrade sharply...