# Next-step prediction on Synthetic HMM Undercomplete case, N=4000

Source: [Next-step prediction on Synthetic HMM Undercomplete case, N=4000](<https://www.sota2.com/research/sota/next-step-prediction-on-synthetic-hmm-undercomplete-case-n-4000>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-04-27T07:39:51.959Z

Evaluation of models performing next-step prediction on the Synthetic HMM Undercomplete case dataset (N=4000), measured by validation loss.

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Next-step prediction |
| Dataset (including any stated split) | Synthetic HMM Undercomplete case, N=4000 |
| Metric | Validation Loss |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 7 of 7 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [Validation Loss](<https://www.sota2.com/research/sota/next-step-prediction-on-synthetic-hmm-undercomplete-case-n-4000.md?metric=Validation%20Loss>): Lower is better; unit: SCALAR.

## Recorded results

| Method | Validation Loss | Result date | Report paper |
| --- | --- | --- | --- |
| HMM Filter | 1.368 | Not recorded | 6916b7a40052cac1dc65e1ea |
| nanoGPT-s | 1.458 | Not recorded | 6916b7a40052cac1dc65e1ea |
| nanoGPT-m | 1.475 | Not recorded | 6916b7a40052cac1dc65e1ea |
| Belief Net | 1.569 | Not recorded | 6916b7a40052cac1dc65e1ea |
| Spectral | 1.624 | Not recorded | 6916b7a40052cac1dc65e1ea |
| Baum-Welch | 1.951 | Not recorded | 6916b7a40052cac1dc65e1ea |
| Random | 4.852 | Not recorded | 6916b7a40052cac1dc65e1ea |

### HMM Filter

Validation Loss: 1.368. Result ID: 69ef11b447f34ce924d4f1cf.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### nanoGPT-s

Validation Loss: 1.458. Result ID: 69ef11b447f34ce924d4f1cc.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

Recorded evaluation configuration: {"# parameters":"73,920","training time":"2.5 min","# iterations":"2,000 iter."}. This record does not assert independent reproduction.

### nanoGPT-m

Validation Loss: 1.475. Result ID: 69ef11b447f34ce924d4f1cd.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

Recorded evaluation configuration: {"# parameters":"221,760","training time":"7.5 min","# iterations":"2,000 iter."}. This record does not assert independent reproduction.

### Belief Net

Validation Loss: 1.569. Result ID: 69ef11b447f34ce924d4f1ce.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

Recorded evaluation configuration: {"# parameters":"12,352","training time":"20 min","# iterations":"2,000 iter."}. This record does not assert independent reproduction.

### Spectral

Validation Loss: 1.624. Result ID: 69ef11b447f34ce924d4f1cb.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa60a31e209131ce9f0724.md>)

Recorded evaluation configuration: {"# parameters":"524,416","# iterations":"(PCA)"}. This record does not assert independent reproduction.

### Baum-Welch

Validation Loss: 1.951. Result ID: 69ef11b447f34ce924d4f1ca.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

Recorded evaluation configuration: {"# parameters":"12,352","training time":"51 min","# iterations":"20 iter."}. This record does not assert independent reproduction.

### Random

Validation Loss: 4.852. Result ID: 69ef11b447f34ce924d4f1d0.

[Reporting paper](<https://www.sota2.com/research/paper/6916b7a40052cac1dc65e1ea.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

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