> ## Documentation Index
> Fetch the complete documentation index at: https://www.pierview.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Key Terminology

> Glossary-lite of terms used across Pierview

## Core concepts

| Term                | Definition                                                          | Example                                          |
| ------------------- | ------------------------------------------------------------------- | ------------------------------------------------ |
| **Prompt**          | A query sent to an AI model to simulate user search intent          | "best CRM for small business"                    |
| **Prompt set**      | A group of related prompts tracked together                         | All "best X" prompts for your category           |
| **Model/platform**  | The AI system being queried (e.g., ChatGPT, Perplexity, Claude)     | Perplexity, ChatGPT                              |
| **Brand mention**   | An occurrence of your brand name in an AI response                  | "Pierview is great for tracking AI visibility"   |
| **Visibility**      | The share of responses that mention your brand                      | 8 of 10 responses mention you → 80% visibility   |
| **Sentiment**       | Tone of the mention: positive, neutral, or negative                 | "Highly recommended" vs "mixed reviews"          |
| **Citation**        | A source URL or reference the AI includes in its answer             | A link to your blog, G2, or a news article       |
| **Source**          | The domain or site behind a citation                                | g2.com, techcrunch.com, your-site.com            |
| **Used**            | How often a source is cited across responses                        | G2 appears in 7 of 10 answers → Used = 7         |
| **Avg citations**   | Average number of citations per response for a given source         | Source appears 2.3 times per response on average |
| **Share of Answer** | Your brand's share of total mentions in a response (vs competitors) | You’re 3 of 5 brands mentioned → 60% share       |
| **Baseline**        | Your initial visibility/sentiment/citation metrics before changes   | First scan = baseline for comparison             |
| **Scan**            | A single run of your prompts against AI models                      | Weekly scan across 20 prompts                    |
| **Tracking period** | The time window for a scan or comparison                            | Last 7 days, last 30 days                        |

## Quick examples

* **Prompt:** "best AI visibility tools", what users might type into an AI assistant.
* **Visibility formula:** <Latex>{"\\text{Visibility} = \\frac{\\text{Mentions}}{\\text{Total Chats}} \\times 100"}</Latex>, percentage of responses that include your brand.
* **Citation rate:** <Latex>{"\\text{Citation Rate} = \\frac{\\text{Responses with your URL}}{\\text{Total Chats}} \\times 100"}</Latex>, how often your site is cited.
* **Source gap:** A domain AI frequently cites (e.g., a top publication) where you don’t yet appear, an opportunity for content or PR.

<Info>
  For the full glossary, see [Glossary](/support/glossary).
</Info>