# Technical Analysis: Retrieval-Augmented Generation (RAG) Architectures This document provides a detailed technical extraction of an infographic comparing three advanced RAG (Retrieval-Augmented Generation) workflows: **Iterative**, **Recursive**, and **Adaptive**. The image is segmented into three distinct vertical panels, each representing a specific logic flow for processing a user query into a final response. --- ## 1. Iterative Workflow **Objective:** Provide more context information. ### Components and Flow * **Header:** "ITERATIVE" (Blue text) with the subtitle "Provide more context information." * **Process Flow:** 1. **Query (Green Box):** The entry point of the system. 2. **Retrieve (Grey Box):** Fetches relevant documents based on the query. 3. **Generate (Grey Box):** Produces an initial output based on retrieved data. 4. **Judge (Orange Diamond):** A decision node evaluating the quality or completeness of the generation. 5. **Feedback Loop:** A dashed blue line labeled **"Iterate N Times"** connects the "Judge" back to the "Retrieve" step. 6. **Exit Condition:** A solid blue line labeled **"Max Times / Threshold"** leads from the "Judge" to the final output. 7. **Response (Green Box):** The final output delivered to the user. --- ## 2. Recursive Workflow **Objective:** Break down complex problems step by step. ### Components and Flow * **Header:** "RECURSIVE" (Purple text) with the subtitle "Break down complex problems step by step." * **Process Flow:** 1. **Query (Green Box):** The entry point. 2. **Retrieve (Grey Box):** Initial data retrieval. 3. **Generate (Grey Box):** Initial generation. 4. **Judge (Orange Diamond):** Evaluates if the problem requires further decomposition. 5. **Feedback Loop:** A dashed blue line leads from "Judge" to a specialized component: **"Query Transformation / Decomposition"** (Grey Box). This component then feeds back into the "Retrieve" step. 6. **Exit Condition:** A solid blue line labeled **"Max Depth (Tree) / Threshold"** leads from the "Judge" to the final output. 7. **Response (Green Box):** The final output. --- ## 3. Adaptive Workflow **Objective:** Flexible and active control of retrieval and generation. ### Components and Flow * **Header:** "ADAPTIVE" (Dark Blue/Gold theme) with the subtitle "Flexible and active control of retrieval and generation." * **Process Flow:** 1. **Query (Green Box):** The entry point. 2. **Judge (Orange Diamond - Initial):** Acts as a router. It is labeled with a side-note: **"Retrieve On Demand."** * **Path A:** If retrieval is not needed, it bypasses directly to a standalone **Generate** (Grey Box) on the left, which then leads to the **Response**. * **Path B:** If retrieval is needed, it proceeds down the main center stack. 3. **Retrieve (Grey Box):** Standard retrieval step. 4. **Generate (Grey Box):** Standard generation step. 5. **Judge (Orange Diamond - Secondary):** Evaluates the generated content. 6. **Feedback Loop:** A dashed blue line leads from the secondary "Judge" to **"Query Transformation / Decomposition"** (Grey Box), which loops back to the "Retrieve" step. 7. **Exit Condition:** A solid blue line labeled **"Generate Special Token / Threshold"** leads from the secondary "Judge" to the final output. 8. **Response (Green Box):** The final output. --- ## Summary Table of Logic Gates | Workflow | Primary Loop Mechanism | Termination Criteria | | :--- | :--- | :--- | | **Iterative** | Simple loop back to Retrieval | Fixed number of iterations (N) or quality threshold. | | **Recursive** | Query Transformation / Decomposition | Maximum tree depth or quality threshold. | | **Adaptive** | Routing (Retrieve on Demand) + Decomposition | Special token generation or quality threshold. | ## Visual Legend & Symbology * **Green Rounded Rectangles:** Input (Query) and Output (Response). * **Grey Rounded Rectangles:** Functional processing steps (Retrieve, Generate, Transform). * **Orange Diamonds:** Decision/Evaluation nodes (Judge). * **Solid Blue Arrows:** Primary linear progression. * **Dashed Blue Arrows:** Iterative or conditional feedback loops.