7530ed3f4a
The SAP 10.2 worksheet computes each existing-dwelling metric in two
distinct blocks:
1. "ENERGY RATING" block — uses Table 12 regulated prices + UK-
average climate. Produces SAP score (Block 11a), total fuel
cost (255), total CO2 (272).
2. "EPC COSTS, EMISSIONS AND PRIMARY ENERGY" block — uses Table 32
prices + postcode-specific climate. Produces total CO2 (272)
again with different value, total PE (286).
The two blocks operate on different space-heating demand kWh per
SAP 10.2 §13 (e.g. solid fuel 8: 21097 kWh in rating block vs
16813 kWh in EPC block for London W6).
The corpus regression test was extracting all four pins and asserting
against the cascade's rating-mode result (`cert_to_inputs`). That was
apples-to-apples for SAP/cost/CO2 (the first `(255)` and `(272)`
matches the regex finds ARE in the rating block) but apples-to-
oranges for PE: the `(286)` Total PE only exists in the EPC block,
so every PE pin was comparing rating-mode cascade output against
EPC-block worksheet output. The mismatch inflated every PE residual
by 10-15% of total PE.
The fix runs both cascade modes in the Act phase and assigns:
- rating-mode result → SAP / cost / CO2 residuals
- demand-mode result (`cert_to_demand_inputs`) → PE residual
25 corpus _CorpusExpectation entries re-pinned. Some closed
dramatically (apples-to-apples reveals the cascade was actually
correct):
ashp +1467.90 → -11.80 ← effectively closed
oil pcdb 1/2 +2086.75 → -83.82
oil pcdb 3 +1897.43 → -271.44
electric 1 +2837.14 → +164.91
electric 8 +2113.83 → -224.46
solid fuel 5 +2359.85 → -330.84
Others surfaced larger demand-mode gaps that the block mismatch had
been hiding — these are real cascade gaps the next slices will
address:
electric 3 -850.93 → -3189.22
electric 5/6 +540/+568 → -1797.96 / -1769.84
pcdb 1 -171.70 → -3135.30
solid fuel 2/3 +440.75 / +1451.79 → -2292.47 / -2496.20
The corpus test docstring + per-block-attribution comment now make
the rating-vs-EPC block distinction explicit so future reviewers
don't repeat the same conflation.
Extended handover suite at HEAD post-slice: 876 pass / 0 fail
(unchanged — no test count change, just per-pin value updates).
Pyright net-zero on touched file (0 → 0).
No cascade behaviour change. No golden / unit-test impact (the bug
was specific to the corpus test's pin-extraction logic).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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| .devcontainer | ||
| .github/workflows | ||
| .idea | ||
| .vscode | ||
| applications | ||
| asset_list | ||
| backend | ||
| backlog | ||
| datatypes | ||
| deployment/terraform | ||
| docs/adr | ||
| domain | ||
| epr_data_exports | ||
| etl | ||
| infrastructure | ||
| model_data/requirements | ||
| orchestration | ||
| recommendations | ||
| repositories | ||
| scripts | ||
| sfr/principal_pitch | ||
| survey_report | ||
| tests | ||
| utilities | ||
| utils | ||
| .coveragerc | ||
| .dockerignore | ||
| .gitignore | ||
| __init__.py | ||
| ara_backend_design.md | ||
| BaseUtility.py | ||
| CLAUDE.md | ||
| conftest.py | ||
| CONTEXT.md | ||
| devcontainer.sh | ||
| Dockerfile.test | ||
| Dockerfile.test.dockerignore | ||
| Makefile | ||
| MEMORY.md | ||
| package-lock.json | ||
| package.json | ||
| pyproject.toml | ||
| pyrightconfig.json | ||
| pytest.ini | ||
| README.md | ||
| run_lambda_local.sh | ||
| serverless.yml | ||
| test.requirements.txt | ||
| tox.ini | ||
| UBIQUITOUS_LANGUAGE.md | ||
Model Repository
This repository contains the code pertaining to the development of the data science and machine learning products being utilised by Hestia.
The different folders in this repository relate to services that can be used independently, or can be imported and used as part of a larger application
Getting Started
Prerequisites
Dev Container Setup
This repo uses a Docker Compose-based dev container. The model-backend service joins a shared-dev Docker network so it can communicate with other local services (e.g. a frontend container) running on your machine.
VS Code users: The initializeCommand in devcontainer.json creates the shared-dev network automatically before the container starts. No manual step required — just open the repo and select Reopen in Container.
Non-VS Code / CI workflows: Run the following once before starting the container:
make dev-setup
This is idempotent and safe to re-run if the network already exists.
Folders
backend/
This folder contains the code for the fastapi backend service, which provides an interface to much of the functionality in this repository, for the frontend
model_data/
This folder contains related to the reading and preparation of assessment model data, including pulling out epc attributes
Testing
All tests can be run, against the configuration in pytest.ini running
pytest
This will run the complete panel of tests and report on coverage in the locations specified by the pytest.ini file.
To run tests in a specific service, e.g. inside of model_data, simply run
pytest --cov-config=model_data/.coveragerc --cov=model_data
This will produce the test results and coverage reports