Thank you, Horatio!
So the answers:
You can only choose the sociotype when uploading the image, than it is saved to the website database in a format of "sociotype"+"#of picture", thus there is no way to change the sociotype afterwards. The only way to do it if if I download the image from the database manually and rename it. So yeah, its best if you are sure about the sociotype from the beginning, otherwise if the sociotype does not fit to the face type the neural network will learn wrong pattern.
In regard to the quality. Pretty much everything will do. The images are cropped to 512x512px around the face ( after the face has been detected). So as far as the image is not super small it will fit. The neural network is already trained to recognize faces on the images, so it does not matter what the background is, if the image is in color or B&W, etc. Its pretty flexible, so no extra effort needed to make a "Special" picture that will be recognized. It just works
Regarding access to the files. All the images are stored in the websites database that only i can enter. The images will stay in private access and i am not planing to publish them anywhere. If you are concerned about the privacy issues there are 2 things: 1) i will not share anything from the participants with the 3rd parties. 2) i do not posses any information of the users,but the picture and the sociotype correlated to that picture. More than this i have no way of knowing if you uploaded picture of yourself or somebody else, so i would say that it is very safe and its not faceboook
On this point the first thing i want to see/prove is that the sociotype theory is actually working and if the features of teh human face tell something about the character. And if so is it possible to tell who is who just by seeing somebody's face. If the results are positive (and i really hope they are) than i might publish the results somewhere or write an article about it, but i will provide only statistical data in it (such as #of pictures used, how accurate the predictions are etc. so only numbers not pictures of participants).
About subtypes. What do you mean exactly? Currently the system is designed in a way that it can distinguish 16 sociotypes like here :
https://image.slidesharecdn.com/68e7...?cb=1437752809