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Before training an LDA model in Gensim, which object is responsible for converting words into unique integer IDs?

easy📝 Conceptual Q2 of 15
NLP - Topic Modeling
Before training an LDA model in Gensim, which object is responsible for converting words into unique integer IDs?
Agensim.corpora.MmCorpus
Bgensim.models.LdaModel
Ccorpora.Dictionary
Dgensim.similarities.MatrixSimilarity
Step-by-Step Solution
Solution:

  1. Step 1: Identify the mapping object

    The corpora.Dictionary class creates a mapping from words to unique IDs.

  2. Step 2: Clarify other options

    LdaModel trains the model, MmCorpus handles corpus storage, and MatrixSimilarity is for similarity queries.

  3. Final Answer:

    corpora.Dictionary -> Option C

  4. Quick Check:

    Check Gensim docs for dictionary creation [OK]
Quick Trick: Dictionary maps words to IDs before modeling [OK]
Common Mistakes:
MISTAKES
  • Using LdaModel to map words instead of Dictionary
  • Confusing corpus formats with word-ID mapping

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