Speech analytics and quality · L2 · 15 min
Sentiment is a label
Learn in five minutes
- Wikipedia defines sentiment analysis as identifying affective states and subjective information.
- A basic task it describes is polarity: positive, negative, or neutral, for a document, a sentence, or an aspect.
- The page says telling subjective text from objective text can be harder than polarity, and that context can change the class.
- It lists challenges that include metaphor, differences in writing, and context.
- A label on a call is a classifier output. It is not a fact the caller stated.
If the sentence is a fact about a balance, do not store a polarity word as if the caller had said it.
Visual
Label, then look again
- Take the sentence 'the card has no fee' and mark it as a fact, not a mood.
- Take 'I hate this hold music' and mark a negative polarity, then write 'classifier label'.
- Add the Wikipedia caution: context can change the class.
- Do not average the two into a customer-satisfaction score.
Quiz
Ecosystem
- Polarity
- A positive, negative, or neutral class. Wikipedia lists it as a basic sentiment task.
Sisters: Automatic speech recognition, Sentiment analysis, Quality rubrics, Personal data.
The live voice pipeline answers the person. Analytics reads a recording later. Keep those clocks apart.
A later review can add a rubric you wrote. It cannot borrow a customer's tape.
Config
- Write the goal in one sentence.
- Name the input and the allowed output.
- Save the trace next to the result.
Troubleshooting
- The answer looks fluent and is wrong. Check whether a source passage actually contains the claim.
- The loop never stops. Set a step cap and stop when the tool result repeats.
Sources and go deeper
- Sentiment analysis — Wikipedia wikipedia last checked 2026-10