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In a bigram language model, what does the probability P(w2|w1) represent?

easy📝 Conceptual Q2 of 15
NLP - Text Generation
In a bigram language model, what does the probability P(w2|w1) represent?
AProbability of word w1 occurring after word w2
BProbability of word w2 occurring anywhere in the sentence
CProbability of word w2 occurring after word w1
DProbability of word w1 occurring anywhere in the sentence
Step-by-Step Solution
Solution:

  1. Step 1: Understand bigram conditional probability

    Bigram models calculate the chance of a word given the previous word.

  2. Step 2: Interpret P(w2|w1)

    This means the probability that w2 follows w1 in the text.

  3. Final Answer:

    Probability of word w2 occurring after word w1 -> Option C

  4. Quick Check:

    Bigram conditional probability = B [OK]
Quick Trick: Bigram predicts next word given previous word [OK]
Common Mistakes:
MISTAKES
  • Reversing the order of words
  • Ignoring the conditional nature
  • Confusing with unigram probability

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