metadata
marp: true
theme: riprap
paginate: true
size: '16:9'
title: Riprap. Citation-grounded NYC flood briefings.
description: AMD x lablab.ai Developer Hackathon, May 4–10 2026
AMD × lablab.ai · Developer Hackathon
Riprap
Citation-grounded NYC flood-exposure briefings, on AMD MI300X.
01 · The problem
Climate risk data is a black box.
The market
First Street. Score 1–10.
ClimateCheck. Score 1–100.
Jupiter. Enterprise SaaS.
A number. A bar chart. A black box.
ClimateCheck. Score 1–100.
Jupiter. Enterprise SaaS.
A number. A bar chart. A black box.
Nov 14·2025 · CNN / TechCrunch (paraphrase)
Zillow removed climate risk scores from listings under pressure from the real-estate industry. In their place: a link, far less visible.
When a number meets resistance, the only defense is the audit trail.
Riprap is not a property-risk score. It is the audit trail behind one.
02 · SOLUTION
A flood-exposure briefing for any place in New York City.
03 · The civic-tech case
The civic-tech case.
NY Property Disclosure Law
March 2024. Sellers must disclose flood history. Riprap is the citable narrative.
NYC DEP Stormwater Plan
2024. $30B priority list, 86 sites. Riprap is the per-NTA evidence layer.
EJNYC Flood Vulnerability Index
2024. 35% of state climate spend goes to "disadvantaged communities." Riprap stays open-source so advocacy can audit.
No commercial APIs
Every dataset is public-record federal, state, or city. Every foundation model is Apache-2.0. Every claim cites its source.
04 · Architecture
Five Stones fan out. One cited briefing comes back.
query → Planner (Granite 4.1 3B, intent classification) → Stone roster → Capstone (Granite 4.1 8B + Mellea) → briefing
Cornerstone · USGS 3DEP
2020
Microtopography (HAND / TWI)
HAND0.82 m
TWI14.3
Elev.2.1 m MSL
Pct. lower78%
[topo]
Keystone · TerraMind-NYC
2024
Building footprint coverage
48.41%
250 m radius · Buildings LoRA adapter
[keystone_bldg]
Touchstone · NYC 311
live
Flood complaints · 200 m buffer
19 requests · 5-yr lookback
[nyc311]
Lodestone · Granite TTM r2
live
Surge residual nowcast
peak surge residual · 9.6 h horizon
[ttm_surge]
Real evidence cards rendered by the live system · 442 East Houston Street, Manhattan.
Capstone
Granite 4.1 8B + Mellea rejection sampling ·
numerics_grounded · no_placeholder_tokens · citations_dense · citations_resolve · reroll until resolved → cited 4-section briefing
05 · Fine-Tuning on AMD MI300X
Three Apache-2.0 NYC fine-tunes on MI300X.
Prithvi-EO-2.0-NYC-Pluvial
Hurricane Ida pluvial flood detection from Sentinel-2
0.5979
test flood IoU · 6× lift over Sen1Floods11 baseline
MI300X · AMD Developer Cloud
TerraMind-NYC-Adapters
LULC + Buildings + TiM LoRA adapters for NYC
+6.13pp
LULC mIoU over full-FT baseline · mIoU 0.5866
~18 min total · MI300X
Granite-TTM-r2-Battery-Surge
NOAA Battery tide gauge 96h surge residual nowcast
0.157m
RMSE · −35% vs persistence baseline
MI300X · Apache-2.0 · HF Hub
Track submitted: Fine-Tuning on AMD GPUs · All three models Apache-2.0, published on HF Hub
06 · DEMO
Live demo.
“I’m thinking about renting an apartment at 80 Pioneer Street, Brooklyn. Should I worry?”
13 seconds end-to-end · 4/4 grounding checks · all sources public-record
07 · What's next
What's next.
The architecture is NYC-specific by data choice, not by code.
Break out the Stones
Each Stone is a coherent composition over data sources, models, and deterministic checks. Extract Cornerstone, Touchstone, Keystone, Lodestone as independent packages; any civic-tech project can pull one Stone without the full Riprap stack.
Other flood-impacted cities
Houston (Harvey, Beryl), Miami (king tides), Boston (CSO floods), Jakarta, Manila, Dhaka — the same five-Stone pattern, different probe sets and RAG corpora per city.
Historical-event mode
Re-run the FSM with snapshot data from any past date. Validate the system against measured outcomes — what would Riprap have said before Sandy, before Ida, before the 2024 Beryl remnants. Calibration as a first-class feature.
Riprap · flood briefings on AMD
github.com/msradam/riprap-nyc
Apache-2.0 · public data · AMD MI300X · IBM Granite 4.1 · Mellea grounding
AMD × lablab.ai · May 4–10 2026
Dam mark: "Dam" by Chintuza via the Noun Project, CC-BY 3.0.
Appendix · The receipts
5 of 5 NYC addresses. Every claim verified, every run.
| address | intent | wall | steps | verified |
|---|---|---|---|---|
| 442 E Houston St · LES | address | 7.6 s | 19 | 4/4 |
| 80 Pioneer St · Red Hook | address | 13.1 s | 19 | 4/4 |
| 100 Gold St · Manhattan | address | 11.2 s | 19 | 4/4 |
| Hollis · Queens | nbhd | 5.8 s | 9 | 4/4 |
| Coney Island · Brooklyn | nbhd | 9.9 s | 9 | 4/4 |
Wall-clock
5.8–13.1 s
vLLM on MI300X
Stones
5
evidence layers per briefing
Verified
4 / 4
source checks every run