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Question

What is a key limitation of techniques like latent semantic analysis (LSA) as compared to generative approaches like LDA?

a.

LSA assumes a topic-based document generation model.

b.

LSA predicts relative frequencies of specific terms within a document.

c.

LSA requires Bayesian inference.

d.

LSA is not applicable to weakly structured textual data.

Posted under Big Data Computing

Answer: (a).LSA assumes a topic-based document generation model. Explanation:A key limitation of techniques like latent semantic analysis (LSA) as compared to generative approaches like LDA is that LSA does not start from a generative model of documents.

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Q. What is a key limitation of techniques like latent semantic analysis (LSA) as compared to generative approaches like LDA?

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