# NomaDamas: kojev

> A Korean typed-decision encoder: a fully fine-tuned SKT A.X Encoder with a span-pooling head takes a state plus choice, score and yes/no questions and returns probabilities in one forward pass. Its makers call it an in-domain fit that does not generalise.

- Page: https://systemonemodels.ai/nomadamas/kojev
- API: https://api.systemonemodels.ai/v1/models/nomadamas/kojev
- Download: `pip install systemonemodels && systemone pull nomadamas/kojev`

## Facts

| | |
|---|---|
| Maker | NomaDamas (https://systemonemodels.ai/nomadamas) |
| Decides | choice, score, noul, classify |
| Architecture | kojev |
| Base model | skt/a.x-encoder-base |
| Parameters | 149M |
| Licence | apache-2.0 |
| Availability | Open weights |
| Released | 2026-09-21 |
| Latest version | 2026.09 |

## Reported evaluation

Suite: KoJev gold-val (6,499 held-out states from NomaDamas's own 12-source training mix). Numbers are the publisher's own.

- Decision accuracy: 76.4%
- Calibration error (ECE): 0.019
- Median latency: 20.6 ms
- p95 latency: 25.8 ms

## Model card

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# KoJev-v0

A Korean typed-decision encoder: a fully fine-tuned SKT A.X Encoder with a span-pooling head takes a state plus choice, score and yes/no questions and returns probabilities in one forward pass. Its makers call it an in-domain fit that does not generalise.

Released by Jeffrey Dongkyu Kim for NomaDamas. In-domain validation accuracy is 0.764 (majority baseline 0.645), but out of domain it scores 0.416, below the 0.482 majority baseline, and KoBEST zero-shot is near chance, as the makers state. Teacher labels came from qwen3-vl-8b. Training sources include KLAID (CC BY-NC-ND 4.0) and KorQuAD (CC BY-ND 4.0), so the weights are not mirrored or packaged here until that is reviewed.

## What it decides

- **choice** — picks one option from a set
- **score** — places the input on an ordered scale
- **noul** — answers a yes/no question with one probability
- **classify** — assigns a category from a fixed taxonomy

## At a glance

| | |
|---|---|
| Parameters | 149M |
| Base model | `skt/A.X-Encoder-base` |
| Maker | NomaDamas |
| Released | 2026-09-21 |
| License | apache-2.0 |
| Reported accuracy | 76.4% |
| Reported latency | 20.6 ms median / 25.8 ms p95 per state with 10 questions (hardware not stated) |

## Get the weights

```bash
pip install systemonemodels
systemone pull nomadamas/kojev
```

The files are served from the maker's Hugging Face repository, [`NomaDamas/KoJev-v0`](https://huggingface.co/NomaDamas/KoJev-v0), and verified against the checksums recorded here.

## Read more

- [Model card](https://huggingface.co/NomaDamas/KoJev-v0)
- [Code](https://github.com/NomaDamas/kojev)

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*This page was opened by System One for NomaDamas, who can claim the organisation and take it over at any time.*

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