DataX Practice Questions - CompTIA DataX (DY0-001) Exam

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A data scientist is building a recommendation system for an e-commerce platform. Which technique BEST handles the cold start problem for new users with no purchase history?

Content-based filtering using item attributes (category, price, description embeddings) combined with demographic-based popularity recommendations Collaborative filtering using matrix factorization on the user-item interaction matrix Deep learning recommendation model (DLRM) trained on all historical interaction data Association rules mining using Apriori algorithm on frequent itemsets from past transactions

Correct Answer:

Content-based filtering using item attributes (category, price, description embeddings) combined with demographic-based popularity recommendations

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