AI-102 Practice Question: Implement natural language processing solutions
You are developing a chatbot for a retail company using Azure AI Language's custom question answering. The chatbot must provide answers from a knowledge base of 500 FAQ documents. Users often ask the same question in different wording, and the chatbot fails to return an answer for paraphrased queries. What is the most effective solution?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable active learning in the project settings and periodically publish the updated knowledge base.
Enabling active learning in Azure AI Language's custom question answering allows the system to learn from user interactions. It suggests alternative phrasings for existing QnA pairs, which helps answer paraphrased queries without manual effort. Option A is wrong because Direct Line Speech channel is for voice interactions, not improving answer coverage. Option C is wrong because simply adding more documents does not address the paraphrasing issue; it may increase redundancy but not handle different wording of the same question. Option D is wrong because manually adding alternate phrases is time-consuming and not scalable; active learning automates this process by identifying and suggesting variations based on user queries.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Azure AI Bot Service's Direct Line Speech channel to improve accuracy.
Why it's wrong here
Direct Line Speech is for speech input/output, not for improving answer coverage.
- ✓
Enable active learning in the project settings and periodically publish the updated knowledge base.
Why this is correct
Active learning automatically suggests alternative phrasings based on user queries.
- ✗
Increase the number of FAQ documents in the knowledge base.
Why it's wrong here
Adding more documents does not address paraphrasing issues.
- ✗
Manually add alternate question phrases to the knowledge base for each QnA pair.
Why it's wrong here
This is a workaround but not the most effective; active learning automates this.
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