# Doppler-angle estimation on Rotation-augmented image corpus Patient-level sampling

Source: [Doppler-angle estimation on Rotation-augmented image corpus Patient-level sampling](<https://www.sota2.com/research/sota/doppler-angle-estimation-on-rotation-augmented-image-corpus-patient-level-sampling>)

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

Data updated: 2026-06-16T07:49:25.401Z

Evaluation of Doppler-angle estimation performance using MAE, MAPE, and R2 metrics on the Rotation-augmented image corpus (Patient-level sampling).

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 | Doppler-angle estimation |
| Dataset (including any stated split) | Rotation-augmented image corpus Patient-level sampling |
| Metric | MAE (°) |
| 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

- [MAE (°)](<https://www.sota2.com/research/sota/doppler-angle-estimation-on-rotation-augmented-image-corpus-patient-level-sampling.md?metric=MAE%20(%C2%B0)>): Lower is better; unit: SCALAR.

- [MAPE (%)](<https://www.sota2.com/research/sota/doppler-angle-estimation-on-rotation-augmented-image-corpus-patient-level-sampling.md?metric=MAPE%20(%25)>): Lower is better; unit: PERCENT.

- [R2 Score](<https://www.sota2.com/research/sota/doppler-angle-estimation-on-rotation-augmented-image-corpus-patient-level-sampling.md?metric=R2%20Score>): Higher is better; unit: SCALAR.

## Recorded results

| Method | MAE (°) | Result date | Report paper |
| --- | --- | --- | --- |
| 5-model ensemble (stacked) | 5.93 | Not recorded | 68fa7a721e209131cea83481 |
| 5-model ensemble (mean) | 6.89 | Not recorded | 68fa7a721e209131cea83481 |
| DenseNet201 | 8.62 | Not recorded | 68fa7a721e209131cea83481 |
| ResNet50 | 9.79 | Not recorded | 68fa7a721e209131cea83481 |
| VGG19 | 10.21 | Not recorded | 68fa7a721e209131cea83481 |
| InceptionV3 | 10.66 | Not recorded | 68fa7a721e209131cea83481 |
| Xception | 10.88 | Not recorded | 68fa7a721e209131cea83481 |

### 5-model ensemble (stacked)

MAE (°): 5.93. Result ID: 6a30ff60fbc373592c2cf8c7.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Aggregation":"stacked","Validation":"pooled out-of-fold"}. This record does not assert independent reproduction.

### 5-model ensemble (mean)

MAE (°): 6.89. Result ID: 6a30ff60fbc373592c2cf8c6.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Aggregation":"pooled out-of-fold means"}. This record does not assert independent reproduction.

### DenseNet201

MAE (°): 8.62. Result ID: 6a30ff60fbc373592c2cf8c1.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa63f31e209131cea01bfd.md>)

[Implementation](<https://github.com/liuzhuang13/DenseNet>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Validation":"5-fold cross-validation"}. This record does not assert independent reproduction.

### ResNet50

MAE (°): 9.79. Result ID: 6a30ff60fbc373592c2cf8c2.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa62321e209131ce9f8328.md>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Validation":"5-fold cross-validation"}. This record does not assert independent reproduction.

### VGG19

MAE (°): 10.21. Result ID: 6a30ff60fbc373592c2cf8c3.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa61d01e209131ce9f62f5.md>)

[Implementation](<http://www.robots.ox.ac.uk/~vgg/research/very_deep/>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Validation":"5-fold cross-validation"}. This record does not assert independent reproduction.

### InceptionV3

MAE (°): 10.66. Result ID: 6a30ff60fbc373592c2cf8c4.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa62331e209131ce9f8333.md>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Validation":"5-fold cross-validation"}. This record does not assert independent reproduction.

### Xception

MAE (°): 10.88. Result ID: 6a30ff60fbc373592c2cf8c5.

[Reporting paper](<https://www.sota2.com/research/paper/68fa7a721e209131cea83481.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa63371e209131ce9fd796.md>)

[Implementation](<https://keras.io/applications/#xception>)

Recorded evaluation configuration: {"Hyperparameter Tuning":"Optuna-tuned","Validation":"5-fold cross-validation"}. This record does not assert independent reproduction.

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