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| 1 | +# Project: “Green AI Automated RAG Testing with Gemma” |
| 2 | + |
| 3 | +## Overview |
| 4 | + |
| 5 | +We built an interactive retrieval-augmented generation (RAG) pipeline using the |
| 6 | +open-weight model *Gemma 2-2b* by Google and applied it to a standardized text |
| 7 | +and prompt set derived from the Apollo 11 lunar landing. |
| 8 | + |
| 9 | +**The goal:** |
| 10 | + |
| 11 | +* evaluate summarisation, reasoning, retrieval, paraphrasing, and creative tasks |
| 12 | +in a controlled, reproducible way — logging both answer quality and local |
| 13 | +sustainability metrics (energy/carbon emissions) via CodeCarbon. |
| 14 | + |
| 15 | +## Model |
| 16 | + |
| 17 | +**Model ID:** `google/gemma-2-2b-it` (Hugging Face) |
| 18 | + |
| 19 | +**Key attributes:** |
| 20 | + |
| 21 | +* Open-weight decoder-only model trained by Google |
| 22 | +* Supports text-generation and conversational usage |
| 23 | +* Suitable for research, summarisation, reasoning, and retrieval tasks |
| 24 | +* Lightweight enough for deployment on modest compute resources |
| 25 | + |
| 26 | +Model link: [https://huggingface.co/google/gemma-2-2b-it](https://huggingface.co/google/gemma-2-2b-it) |
| 27 | + |
| 28 | +## What We Did |
| 29 | + |
| 30 | +1. Created a source document (`source.txt`) using ~1,400 words of selected |
| 31 | + Wikipedia excerpts on Apollo 11. |
| 32 | +2. Defined a set of 21 standardised prompts spanning five categories: |
| 33 | + summarisation, reasoning, RAG (fact retrieval), paraphrasing, and creative |
| 34 | + generation. |
| 35 | +3. Built a document retrieval component using sentence-transformers to chunk |
| 36 | + the document and select top-k relevant chunks per query. |
| 37 | +4. Developed an interactive notebook workflow that: |
| 38 | + |
| 39 | + * Accepts a question at runtime |
| 40 | + * Runs RAG → Draft → Critic → Refiner cycles using Gemma |
| 41 | + * Tracks local CPU/GPU energy usage and CO₂ emissions with CodeCarbon |
| 42 | + * Logs each question, answer, timestamp, and emissions to a single |
| 43 | + append-only log file |
| 44 | +5. Logged runtime latency and emissions per query for performance and |
| 45 | + sustainability insights. |
| 46 | + |
| 47 | +## How to Use |
| 48 | + |
| 49 | +1. Clone the repository: |
| 50 | + |
| 51 | + ```bash |
| 52 | + git clone <YOUR_REPO_URL> |
| 53 | + cd your_repo_folder |
| 54 | + ``` |
| 55 | + |
| 56 | +2. Place your `source.txt` into `./data/`. |
| 57 | + |
| 58 | +3. Add your Hugging Face API key in the config cell. |
| 59 | + |
| 60 | +4. Run the notebook setup cells, then use the interactive prompt cell to ask |
| 61 | + questions. |
| 62 | + |
| 63 | +## Why This Matters |
| 64 | + |
| 65 | +* **Reproducibility** — fixed source text and prompt set allow consistent |
| 66 | + evaluation across models. |
| 67 | +* **Efficiency vs. Accuracy** — emissions are logged alongside outputs to |
| 68 | + explore trade-offs between model performance and energy cost. |
| 69 | +* **Accessibility** — uses an open model and standard Python tools, making |
| 70 | + research on small language models feasible even on laptops. |
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