NLP - Topic Modeling
Which of the following is the correct way to represent documents for Latent Dirichlet Allocation (LDA)?
Which of the following is the correct way to represent documents for Latent Dirichlet Allocation (LDA)?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall LDA input format
LDA requires a matrix where each row is a document and each column is a word count, showing how often each word appears in each document.Step 2: Eliminate incorrect options
Document lengths, titles, or dates do not provide word frequency information needed for LDA.Final Answer:
A matrix of word counts per document -> Option BQuick Check:
LDA input = word count matrix [OK]
Quick Trick: LDA uses word count matrices as input [OK]
Common Mistakes:
MISTAKES- Using document titles instead of word counts
- Confusing document length with word frequency
- Including metadata like dates as input
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