# Open-world Semi-Supervised Learning on ImageNet-100 (50% known, 50% novel split)

Source: [Open-world Semi-Supervised Learning on ImageNet-100 (50% known, 50% novel split)](<https://www.sota2.com/research/sota/open-world-semi-supervised-learning-on-imagenet-100-50-percent-known-50-percent-novel-split>)

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

Data updated: 2026-02-26T05:47:55.531Z

Evaluation of Open-world Semi-Supervised Learning performance on ImageNet-100, utilizing a specific experimental setup where 50% of classes are designated as known and 50% as novel, measured by Known, Novel, and All Accuracy.

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 | Open-world Semi-Supervised Learning |
| Dataset (including any stated split) | ImageNet-100 50% known, 50% novel |
| Metric | Known Acc |
| Unit | PERCENT |
| Direction | Higher 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

- [Known Acc](<https://www.sota2.com/research/sota/open-world-semi-supervised-learning-on-imagenet-100-50-percent-known-50-percent-novel-split.md?metric=Known%20Acc>): Higher is better; unit: PERCENT.

- [Novel Acc](<https://www.sota2.com/research/sota/open-world-semi-supervised-learning-on-imagenet-100-50-percent-known-50-percent-novel-split.md?metric=Novel%20Acc>): Higher is better; unit: PERCENT.

- [All Acc](<https://www.sota2.com/research/sota/open-world-semi-supervised-learning-on-imagenet-100-50-percent-known-50-percent-novel-split.md?metric=All%20Acc>): Higher is better; unit: PERCENT.

## Recorded results

| Method | Known Acc | Result date | Report paper |
| --- | --- | --- | --- |
| OpenLDN | 89.6 | Not recorded | 68fa6d201e209131cea37fab |
| ORCA | 89.1 | Not recorded | 68fa6d201e209131cea37fab |
| DS3L | 71.2 | Not recorded | 68fa6d201e209131cea37fab |
| CGDL | 67.3 | Not recorded | 68fa6d201e209131cea37fab |
| FixMatch | 65.8 | Not recorded | 68fa6d201e209131cea37fab |
| RankStats | 47.3 | Not recorded | 68fa6d201e209131cea37fab |
| DTC | 25.6 | Not recorded | 68fa6d201e209131cea37fab |

### OpenLDN

Known Acc: 89.6. Result ID: 698f801b3a6c314849f9543e.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Implementation](<https://github.com/nayeemrizve/OpenLDN>)

Recorded evaluation configuration: {"SSL Framework":"UDA"}. This record does not assert independent reproduction.

### ORCA

Known Acc: 89.1. Result ID: 698f801b3a6c314849f9543d.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6ba21e209131cea2f704.md>)

[Implementation](<https://github.com/snap-stanford/orca>)

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

### DS3L

Known Acc: 71.2. Result ID: 698f801b3a6c314849f95439.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

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

### CGDL

Known Acc: 67.3. Result ID: 698f801b3a6c314849f9543a.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa69361e209131cea20d98.md>)

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

### FixMatch

Known Acc: 65.8. Result ID: 698f801b3a6c314849f95438.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa68d61e209131cea1e896.md>)

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

### RankStats

Known Acc: 47.3. Result ID: 698f801b3a6c314849f9543c.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa67091e209131cea14026.md>)

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

### DTC

Known Acc: 25.6. Result ID: 698f801b3a6c314849f9543b.

[Reporting paper](<https://www.sota2.com/research/paper/68fa6d201e209131cea37fab.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa66441e209131cea0f56d.md>)

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

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