# Greenbottle (by Storika)

- **Event:** [Gemini 3 서울 해커톤](https://cerebralvalley.ai/e/gemini-3-seoul-hackathon)
- **When:** Sat, Feb 28 at 9:00 AM – 10:00 PM (GMT+9)
- **Where:** 서울 Seocho District, Olympic-daero, 2085-14 세빛둥둥섬
- **Team:** [Brice](https://cerebralvalley.ai/u/brice_j_lee), [SOOHYUN JUNG](https://cerebralvalley.ai/u/sashajung), [Mason Choi](https://cerebralvalley.ai/u/masonchoi), [Minhyun Kim](https://cerebralvalley.ai/u/kmh4500)
- **GitHub:** https://github.com/storika/gemini-3-seoul-hackaton-202602
- **Demo video:** https://www.loom.com/share/837b39d27fab4ab4829dd28940dd7889
- **Gallery:** https://cerebralvalley.ai/e/gemini-3-seoul-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/gemini-3-seoul-hackathon/hackathon/gallery/89

GreenBottle solves the long-term memory problem in AI. Current LLMs lose coherence over long histories — context windows overflow, and temporal relationships get lost. We built a hybrid memory system that combines:

- Knowledge Graph (NetworkX) — brand ontology with entities, relationships, and multi-hop traversal
- Vector Memory (ChromaDB) — semantic search across 100 years of brand events, campaigns, and model history
- Temporal Decay (EWA) — significance-weighted exponential decay so founding events stay relevant for decades while fleeting trends fade naturally
- Gemini 3 Flash — LLM-powered memory enrichment, consolidation, and context injection via Google ADK agents

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Markdown version of https://cerebralvalley.ai/e/gemini-3-seoul-hackathon/hackathon/gallery/89. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt