# EWS (Early Warning Signal)

- [US sentiment index](https://quantit.gitbook.io/quanda/us-stock/unstructured/ews-early-warning-signal/us-sentiment-index.md): This dataset includes raw and post-processed SARIMA sentiment analysis metrics from business news articles, along with various US market news tone metrics.
- [US EWS Index](https://quantit.gitbook.io/quanda/us-stock/unstructured/ews-early-warning-signal/us-ews-index.md): This dataset includes various S\&P 500 EWS versions from original, and business news sources. It also contains metrics on the tone of US market news.
- [Keyterm Sentiment Analytics Metrics](https://quantit.gitbook.io/quanda/us-stock/unstructured/ews-early-warning-signal/keyterm-sentiment-analytics-metrics.md): This dataset provides metrics on news articles, segmented by sentiment (positive, negative, neutral) and category, including rates and counts of materials.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://quantit.gitbook.io/quanda/us-stock/unstructured/ews-early-warning-signal.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.