chengds added section_First_experiment_2_classes__.tex  almost 9 years ago

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\section{First experiment: 2 classes}  The first idea is to select the images of those users that have te trait minor  and equal to the first quartile and greater and equal than the third quartile of  a given distribution trait, and assign label 0/1 respectively. In this case the  structure of the net was the same as the one of ImageNet, but we modified the  last layer in order to allow to the net to learn the new data representation. In  this case we want to classify an image belonging to a low or high level of a trait,  so it is a binary classification. We had to treat each trait independently, so we  build 10 files containing the path and the target for each trait in a unique txt  file in this case as the labels are integer (randomly sampled for the training set).  With this idea we have finally some results.  In Table 1 we can see the accuracy obtained form the fine-tuning for training  and testing phase.