How to aggregate face embeddings of all photos of the same person?
$begingroup$
I am classifying about 3000 thousand people's faces using FaceNet. Each person has about 100 photos.
FaceNet first calculates a face embedding ( a feature vector) for each photo. So each person has 100 face embeddings.
What I want to do is aggregate the face embedding of each person into one. What is the best way of doing this?
I have tried to use mean method. But I am not sure whether this is recommended way.
--
The reason I want this is because using a single SVM as classifier for 3000 labels is very slow. (I took 50+ hours and about 250G memory and it still won't finish training). So I need to divide the training data into subsets, and use multiple SVCs to get first level of results. Then I uses the aggregated face-embedding of each person and closest distance to get second level result.
svm
asked Nov 26 '18 at 20:58
user8328365user8328365
62
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bumped to the homepage by Community♦ 23 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
$begingroup$
I am classifying about 3000 thousand people's faces using FaceNet. Each person has about 100 photos.
FaceNet first calculates a face embedding ( a feature vector) for each photo. So each person has 100 face embeddings.
What I want to do is aggregate the face embedding of each person into one. What is the best way of doing this?
I have tried to use mean method. But I am not sure whether this is recommended way.
--
The reason I want this is because using a single SVM as classifier for 3000 labels is very slow. (I took 50+ hours and about 250G memory and it still won't finish training). So I need to divide the training data into subsets, and use multiple SVCs to get first level of results. Then I uses the aggregated face-embedding of each person and closest distance to get second level result.
svm
asked Nov 26 '18 at 20:58
user8328365user8328365
62
$endgroup$
bumped to the homepage by Community♦ 23 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
$begingroup$
I am classifying about 3000 thousand people's faces using FaceNet. Each person has about 100 photos.
FaceNet first calculates a face embedding ( a feature vector) for each photo. So each person has 100 face embeddings.
What I want to do is aggregate the face embedding of each person into one. What is the best way of doing this?
I have tried to use mean method. But I am not sure whether this is recommended way.
--
The reason I want this is because using a single SVM as classifier for 3000 labels is very slow. (I took 50+ hours and about 250G memory and it still won't finish training). So I need to divide the training data into subsets, and use multiple SVCs to get first level of results. Then I uses the aggregated face-embedding of each person and closest distance to get second level result.
svm
asked Nov 26 '18 at 20:58
user8328365user8328365
62
$endgroup$
I am classifying about 3000 thousand people's faces using FaceNet. Each person has about 100 photos.
FaceNet first calculates a face embedding ( a feature vector) for each photo. So each person has 100 face embeddings.
What I want to do is aggregate the face embedding of each person into one. What is the best way of doing this?
I have tried to use mean method. But I am not sure whether this is recommended way.
--
The reason I want this is because using a single SVM as classifier for 3000 labels is very slow. (I took 50+ hours and about 250G memory and it still won't finish training). So I need to divide the training data into subsets, and use multiple SVCs to get first level of results. Then I uses the aggregated face-embedding of each person and closest distance to get second level result.
svm
svm
asked Nov 26 '18 at 20:58
user8328365user8328365
62
asked Nov 26 '18 at 20:58
user8328365user8328365
62
asked Nov 26 '18 at 20:58
user8328365user8328365
62
asked Nov 26 '18 at 20:58
user8328365user8328365
62
asked Nov 26 '18 at 20:58
user8328365user8328365
62
62
bumped to the homepage by Community♦ 23 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
bumped to the homepage by Community♦ 23 mins ago
This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
add a comment |
add a comment |
1 Answer
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$begingroup$
This question is the first I've heard of FaceNet, but I don't think that the right solution to the question is to aggregate the face embeddings but to ask why you're using an SVM to classify the embeddings. Importantly, many SVM implementations of multiclass classification use a one-vs-rest method to train the classifiers -- if you're using a one-vs-rest implementation with 3000 labels, I suspect that this is the reason your training is taking so long.
You should look into how your implementation is training the classifier. Additionally, How large is your embedding size?
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
$endgroup$
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
add a comment |
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1 Answer
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1 Answer
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active
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$begingroup$
This question is the first I've heard of FaceNet, but I don't think that the right solution to the question is to aggregate the face embeddings but to ask why you're using an SVM to classify the embeddings. Importantly, many SVM implementations of multiclass classification use a one-vs-rest method to train the classifiers -- if you're using a one-vs-rest implementation with 3000 labels, I suspect that this is the reason your training is taking so long.
You should look into how your implementation is training the classifier. Additionally, How large is your embedding size?
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
$endgroup$
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
add a comment |
$begingroup$
This question is the first I've heard of FaceNet, but I don't think that the right solution to the question is to aggregate the face embeddings but to ask why you're using an SVM to classify the embeddings. Importantly, many SVM implementations of multiclass classification use a one-vs-rest method to train the classifiers -- if you're using a one-vs-rest implementation with 3000 labels, I suspect that this is the reason your training is taking so long.
You should look into how your implementation is training the classifier. Additionally, How large is your embedding size?
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
$endgroup$
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
add a comment |
$begingroup$
This question is the first I've heard of FaceNet, but I don't think that the right solution to the question is to aggregate the face embeddings but to ask why you're using an SVM to classify the embeddings. Importantly, many SVM implementations of multiclass classification use a one-vs-rest method to train the classifiers -- if you're using a one-vs-rest implementation with 3000 labels, I suspect that this is the reason your training is taking so long.
You should look into how your implementation is training the classifier. Additionally, How large is your embedding size?
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
$endgroup$
This question is the first I've heard of FaceNet, but I don't think that the right solution to the question is to aggregate the face embeddings but to ask why you're using an SVM to classify the embeddings. Importantly, many SVM implementations of multiclass classification use a one-vs-rest method to train the classifiers -- if you're using a one-vs-rest implementation with 3000 labels, I suspect that this is the reason your training is taking so long.
You should look into how your implementation is training the classifier. Additionally, How large is your embedding size?
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
answered Nov 27 '18 at 2:46
MatthewMatthew
57410
57410
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
add a comment |
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
$begingroup$
Thanks for the info. My intended application is face identification: given a face image, identify whose face it belongs out of 3000 people. I googled one-vs-all and one-vs-one classifier, it seems only one-vs-all classifier will fit this need. I guess the other implementation (one-vs-one) is for face authentication only? (check whehter the face is who it claim to be). My embedding size is 512.
$endgroup$
– user8328365
Nov 28 '18 at 6:30
add a comment |
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