Question

A product team collected 40,000 free-text customer feedback comments with no predefined categories. They want to discover the recurring themes across the corpus—without maintaining a fixed label list—so they can prioritize product improvements. Which Azure AI Language capability best fits this requirement?

Accepted Answer

Key phrase extraction to pull salient terms from each comment individually

Answer

Custom text classification with a labeled training set mapping comments to known categories

Answer

The abstractive summarization API run once over the entire concatenated corpus

Answer

Named entity recognition (NER) to tag product and organization entities in each comment