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# System prepended metadata

title: Face features trials

---

# Face features trials

## All face features
![](https://i.imgur.com/5RphP9a.png)



| Learn curve | Validation curve |
| -------- | -------- |
| ![](https://i.imgur.com/6dk9Iei.png) | ![](https://i.imgur.com/U4ZBl7c.png) |

![](https://i.imgur.com/3vo11Mc.png)

## Only the mouth features

### Why?

Correlations of mouth indices

| Correlation x | Correlation y | Correlation z |
| -------- | -------- | -------- |
| ![](https://i.imgur.com/mAsfKaS.png) | ![](https://i.imgur.com/S9358pC.png) | ![](https://i.imgur.com/MDE9qZ8.png) |

Correlation of eyebrow indices

| Correlation x | Correlation y | Correlation z |
| -------- | -------- | -------- |
| ![](https://i.imgur.com/0pl4LB0.png) | ![](https://i.imgur.com/l3k0tqQ.png) | ![](https://i.imgur.com/LklmZJU.png)
 |
 
 Eyebrows just the same and highly correlated over two parts of the indices (left and right eyebrow probably)
 
### Execution

![](https://i.imgur.com/5I238le.png)

| Learn curve | Validation curve |
| -------- | -------- |
| ![](https://i.imgur.com/sKllYFr.png) | ![](https://i.imgur.com/QzHefqU.png) |

![](https://i.imgur.com/N5b2eB0.png)
We see better confusion matrix for AUTO-RIJDEN, HAAS-oor and SCHILDPAD and this with only 40 features instead of 100


## All the face features but with w, h and area

![](https://i.imgur.com/UIcQuHz.png)


| Learn curve | Validation curve |
| -------- | -------- |
| ![](https://i.imgur.com/YICFDsT.png) | ![](https://i.imgur.com/Ttu6pfH.png) |

![](https://i.imgur.com/5HaiLTO.png)

Not better, took only 80 features instead of 100 and the newly added features were not taken

## Only the mouth indices but with w, h and area

Same as only the mouth indices, the newly added features were not selected by selectKBest

## Only the w, h and area features

![](https://i.imgur.com/ELdafpI.png)


| Learn curve | Validation curve |
| -------- | -------- |
| ![](https://i.imgur.com/pNQrFJw.png) | ![](https://i.imgur.com/SBxty7U.png) |

![](https://i.imgur.com/Z1i8dCT.png)
Performs "well" with GOED, HAAS and NAAR



