# Streaming Narration on Ego4D

Source: [Streaming Narration on Ego4D](<https://www.sota2.com/research/sota/streaming-narration-on-ego4d>)

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

Data updated: 2026-06-02T08:46:04.687Z

Evaluation of models performing Streaming Narration on the Ego4D dataset, measured using Perplexity (PPL), Time Difference, Fluency, and Language Model Correlation (LM-Corr.).

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 | Streaming Narration |
| Dataset (including any stated split) | Ego4D |
| Metric | Perplexity (PPL) |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 6 of 6 |
| 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

- [Perplexity (PPL)](<https://www.sota2.com/research/sota/streaming-narration-on-ego4d.md?metric=Perplexity%20(PPL)>): Lower is better; unit: SCALAR.

- [Time Difference](<https://www.sota2.com/research/sota/streaming-narration-on-ego4d.md?metric=Time%20Difference>): Lower is better; unit: TIME.

- [Fluency](<https://www.sota2.com/research/sota/streaming-narration-on-ego4d.md?metric=Fluency>): Higher is better; unit: PERCENT.

- [LM-Corr.](<https://www.sota2.com/research/sota/streaming-narration-on-ego4d.md?metric=LM-Corr.>): Higher is better; unit: PERCENT.

## Recorded results

| Method | Perplexity (PPL) | Result date | Report paper |
| --- | --- | --- | --- |
| FLOWNAR | 1.995 | Not recorded | 6a1e63c5dbd7150506f853b6 |
| FLOWNAR-C | 2.006 | Not recorded | 6a1e63c5dbd7150506f853b6 |
| LION-FS | 2.09 | Not recorded | 6a1e63c5dbd7150506f853b6 |
| Videollm-online | 2.4 | Not recorded | 6a1e63c5dbd7150506f853b6 |
| Videollm-mod | 2.41 | Not recorded | 6a1e63c5dbd7150506f853b6 |
| Videollm-online | 2.43 | Not recorded | 6a1e63c5dbd7150506f853b6 |

### FLOWNAR

Perplexity (PPL): 1.995. Result ID: 6a1e9745fbc373592c18cd30.

[Reporting paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

Recorded evaluation configuration: {"Frame Strategy":"1+3×3","Evaluation Protocol":"teacher-forced"}. This record does not assert independent reproduction.

### FLOWNAR-C

Perplexity (PPL): 2.006. Result ID: 6a1e9745fbc373592c18cd2f.

[Reporting paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

Recorded evaluation configuration: {"Frame Strategy":"1+3×3","Evaluation Protocol":"teacher-forced"}. This record does not assert independent reproduction.

### LION-FS

Perplexity (PPL): 2.09. Result ID: 6a1e9745fbc373592c18cd2e.

[Reporting paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa774c1e209131cea725d7.md>)

Recorded evaluation configuration: {"Frame Strategy":"1+3×3","Evaluation Protocol":"teacher-forced"}. This record does not assert independent reproduction.

### Videollm-online

Perplexity (PPL): 2.4. Result ID: 6a1e9745fbc373592c18cd2c.

[Reporting paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa73a71e209131cea5db14.md>)

[Implementation](<https://www.sota2.com/showlab.github.io/videollm-online>)

Recorded evaluation configuration: {"Frame Strategy":"1+3×3","Evaluation Protocol":"teacher-forced"}. This record does not assert independent reproduction.

### Videollm-mod

Perplexity (PPL): 2.41. Result ID: 6a1e9745fbc373592c18cd2d.

[Reporting paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa74a01e209131cea62b99.md>)

Recorded evaluation configuration: {"Frame Strategy":"1+3×3","Evaluation Protocol":"teacher-forced"}. This record does not assert independent reproduction.

### Videollm-online

Perplexity (PPL): 2.43. Result ID: 6a1e9745fbc373592c18cd2b.

[Reporting paper](<https://www.sota2.com/research/paper/6a1e63c5dbd7150506f853b6.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa73a71e209131cea5db14.md>)

[Implementation](<https://www.sota2.com/showlab.github.io/videollm-online>)

Recorded evaluation configuration: {"Frame Strategy":"1","Evaluation Protocol":"teacher-forced"}. This record does not assert independent reproduction.

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