> For the complete documentation index, see [llms.txt](https://calculatedsystems.gitbook.io/cloud-nifi-processors/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://calculatedsystems.gitbook.io/cloud-nifi-processors/amazon-web-services/comprehend-api/detectsentiment-processor.md).

# DetectSentiment Processor

Part of the AWS Processor package

This processor will take in input string and return the sentiment of the text. The sentiment can be thought of as the connotation of the message.

## Properties

{% hint style="info" %}
All of our Comprehend processors also include these [common properties](/cloud-nifi-processors/amazon-web-services/comprehend-api.md#common-properties).
{% endhint %}

This processor does not have any unique properties outside of the common ones.

## Data Output

If the *Destination* property is set to `flowfile-attribute`, then the output of this processor will be routed to the FlowFile's `nlp.Sentiment` attribute, which will be created if it isn't present.

{% tabs %}
{% tab title="Output Format" %}

| Field Name   | Data Type          | Description                              |
| ------------ | ------------------ | ---------------------------------------- |
| sentiment    | string (Sentiment) | The sentiment of the text                |
| score        | float              | How confident the API is in its response |
| {% endtab %} |                    |                                          |

{% tab title="Relevant Data Structures" %}

#### `Sentiment`

An enumeration that can take any one of the following values: `POSITIVE`, `NEGATIVE`, `NEUTRAL`, or `MIXED`.
{% endtab %}

{% tab title="Example Output" %}

```javascript
{
	"raw-input": "Machine learning is very cool!",
	"output": {
		"sentiment": "POSITIVE",
		"score": 0.992412
	}
}
```

{% endtab %}
{% endtabs %}