# Unsupervised character discovery on Omniglot cross-task from bg (eval)

Source: [Unsupervised character discovery on Omniglot cross-task from bg (eval)](<https://www.sota2.com/research/sota/unsupervised-character-discovery-on-omniglot-cross-task-from-bg-eval>)

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

Data updated: 2026-02-26T05:34:00.500Z

Evaluation of unsupervised character discovery performance using the Omniglot cross-task benchmark subset (evaluation split), measured using clustering metrics like NMI.

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 | Unsupervised character discovery |
| Dataset (including any stated split) | Omniglot cross-task from bg (eval) |
| Metric | Accuracy (100) |
| Unit | PERCENT |
| Direction | Higher is better |
| Results loaded | 11 of 11 |
| 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

- [Accuracy (100)](<https://www.sota2.com/research/sota/unsupervised-character-discovery-on-omniglot-cross-task-from-bg-eval.md?metric=Accuracy%20(100)>): Higher is better; unit: PERCENT.

- [Accuracy](<https://www.sota2.com/research/sota/unsupervised-character-discovery-on-omniglot-cross-task-from-bg-eval.md?metric=Accuracy>): Higher is better; unit: PERCENT.

- [NMI](<https://www.sota2.com/research/sota/unsupervised-character-discovery-on-omniglot-cross-task-from-bg-eval.md?metric=NMI>): Higher is better; unit: SCALAR.

- [NMI (100)](<https://www.sota2.com/research/sota/unsupervised-character-discovery-on-omniglot-cross-task-from-bg-eval.md?metric=NMI%20(100)>): Higher is better; unit: SCALAR.

## Recorded results

| Method | Accuracy (100) | Result date | Report paper |
| --- | --- | --- | --- |
| CCN-CCL | 0.802 | Not recorded | 68fa64871e209131cea0533d |
| CCN-KCL | 0.781 | Not recorded | 68fa64871e209131cea0533d |
| CSP | 0.654 | Not recorded | 68fa64871e209131cea0533d |
| MPCK-means | 0.539 | Not recorded | 68fa64871e209131cea0533d |
| ITML | 0.472 | Not recorded | 68fa64871e209131cea0533d |
| SKKm | 0.469 | Not recorded | 68fa64871e209131cea0533d |
| SKLR | 0.468 | Not recorded | 68fa64871e209131cea0533d |
| SKMS | 0.455 | Not recorded | 68fa64871e209131cea0533d |
| K-means | 0.189 | Not recorded | 68fa64871e209131cea0533d |
| LSC | 0.18 | Not recorded | 68fa64871e209131cea0533d |
| LPNMF | 0.163 | Not recorded | 68fa64871e209131cea0533d |

### CCN-CCL

Accuracy (100): 0.802. Result ID: 698c4b1737894ef7d9cd4cd3.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":true}. This record does not assert independent reproduction.

### CCN-KCL

Accuracy (100): 0.781. Result ID: 698c4b1737894ef7d9cd4cd2.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa64251e209131cea02d67.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":true}. This record does not assert independent reproduction.

### CSP

Accuracy (100): 0.654. Result ID: 698c4b1737894ef7d9cd4cd0.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa60a81e209131ce9f0ab0.md>)

Recorded evaluation configuration: {"Constraints in Metric":false,"Constraints in Clustering":true}. This record does not assert independent reproduction.

### MPCK-means

Accuracy (100): 0.539. Result ID: 698c4b1737894ef7d9cd4cd1.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":true}. This record does not assert independent reproduction.

### ITML

Accuracy (100): 0.472. Result ID: 698c4b1737894ef7d9cd4ccc.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":false}. This record does not assert independent reproduction.

### SKKm

Accuracy (100): 0.469. Result ID: 698c4b1737894ef7d9cd4cce.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":false}. This record does not assert independent reproduction.

### SKLR

Accuracy (100): 0.468. Result ID: 698c4b1737894ef7d9cd4ccf.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa62fe1e209131ce9fc125.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":false}. This record does not assert independent reproduction.

### SKMS

Accuracy (100): 0.455. Result ID: 698c4b1737894ef7d9cd4ccd.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":true,"Constraints in Clustering":false}. This record does not assert independent reproduction.

### K-means

Accuracy (100): 0.189. Result ID: 698c4b1737894ef7d9cd4cc9.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":false,"Constraints in Clustering":false}. This record does not assert independent reproduction.

### LSC

Accuracy (100): 0.18. Result ID: 698c4b1737894ef7d9cd4ccb.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":false,"Constraints in Clustering":false}. This record does not assert independent reproduction.

### LPNMF

Accuracy (100): 0.163. Result ID: 698c4b1737894ef7d9cd4cca.

[Reporting paper](<https://www.sota2.com/research/paper/68fa64871e209131cea0533d.md>)

Recorded evaluation configuration: {"Constraints in Metric":false,"Constraints in Clustering":false}. This record does not assert independent reproduction.

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