Cannot converge when I training with cifar10

[fanwenyuan]

When I following the instructions training with cifar10 dataset, the net didn't converge.Part of the log is:
I0314 17:24:00.262361 27053 solver.cpp:258] Train net output #2: loss: forcing-binary = -0.124964 (* 1 = -0.124964 loss)
I0314 17:24:00.262364 27053 solver.cpp:571] Iteration 17100, lr = 0.001
I0314 17:24:19.773170 27053 solver.cpp:242] Iteration 17200, loss = 2.21847
I0314 17:24:19.773236 27053 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.0034709 (* 1 = 0.0034709 loss)
I0314 17:24:19.773241 27053 solver.cpp:258] Train net output #1: loss: classfication-error = 2.33997 (* 1 = 2.33997 loss)
I0314 17:24:19.773246 27053 solver.cpp:258] Train net output #2: loss: forcing-binary = -0.124965 (* 1 = -0.124965 loss)
I0314 17:24:19.773259 27053 solver.cpp:571] Iteration 17200, lr = 0.001
I0314 17:24:39.260385 27053 solver.cpp:242] Iteration 17300, loss = 2.17777
I0314 17:24:39.260422 27053 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.00347071 (* 1 = 0.00347071 loss)
I0314 17:24:39.260427 27053 solver.cpp:258] Train net output #1: loss: classfication-error = 2.29926 (* 1 = 2.29926 loss)
I0314 17:24:39.260432 27053 solver.cpp:258] Train net output #2: loss: forcing-binary = -0.124964 (* 1 = -0.124964 loss)
I0314 17:24:39.260435 27053 solver.cpp:571] Iteration 17300, lr = 0.001
I0314 17:24:58.870244 27053 solver.cpp:242] Iteration 17400, loss = 2.16347
I0314 17:24:58.870337 27053 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.00347057 (* 1 = 0.00347057 loss)
I0314 17:24:58.870344 27053 solver.cpp:258] Train net output #1: loss: classfication-error = 2.28496 (* 1 = 2.28496 loss)
I0314 17:24:58.870350 27053 solver.cpp:258] Train net output #2: loss: forcing-binary = -0.124964 (* 1 = -0.124964 loss)
I0314 17:24:58.870357 27053 solver.cpp:571] Iteration 17400, lr = 0.001
The loss just stay near 2.2.
And I've mentioned you used 3 kinds of losses to calculate the result, so I just delete one of the loss layers, use two kinds of losses and it converged. Log is as following:
267646 (* 1 = 0.267646 loss)
I0315 01:15:36.250314 501 solver.cpp:571] Iteration 37600, lr = 0.0001
I0315 01:15:55.113540 501 solver.cpp:242] Iteration 37700, loss = 0.305098
I0315 01:15:55.113579 501 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.000179385 (* 1 = 0.000179385 loss)
I0315 01:15:55.113590 501 solver.cpp:258] Train net output #1: loss: classfication-error = 0.304919 (* 1 = 0.304919 loss)
I0315 01:15:55.113598 501 solver.cpp:571] Iteration 37700, lr = 0.0001
I0315 01:16:14.149433 501 solver.cpp:242] Iteration 37800, loss = 0.283406
I0315 01:16:14.149519 501 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.000153867 (* 1 = 0.000153867 loss)
I0315 01:16:14.149533 501 solver.cpp:258] Train net output #1: loss: classfication-error = 0.283253 (* 1 = 0.283253 loss)
I0315 01:16:14.149544 501 solver.cpp:571] Iteration 37800, lr = 0.0001
I0315 01:16:33.261036 501 solver.cpp:242] Iteration 37900, loss = 0.147353
I0315 01:16:33.261082 501 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.000290852 (* 1 = 0.000290852 loss)
I0315 01:16:33.261096 501 solver.cpp:258] Train net output #1: loss: classfication-error = 0.147062 (* 1 = 0.147062 loss)
I0315 01:16:33.261106 501 solver.cpp:571] Iteration 37900, lr = 0.0001
I0315 01:16:51.728065 501 solver.cpp:346] Iteration 38000, Testing net (#0)
So What caused this, and how to solve the problem?Thank you.

[kevinlin311tw]

We didn't observe this problem. We used the same codes and model converged.

[fanwenyuan]

I redownload and built this project, trained on cifar10 without changing any settings, it still didn't converge, so what's going wrong probably? I'm very confused.

[IvyYZ]

I also have this problem on the cifar10 . And my loss is the same as the classification loss. The code I used is in SSDH-VGG16-48.

I0415 23:06:50.008275 114710 solver.cpp:239] Iteration 100 (1.581 iter/s, 63.251s/100 iters), loss = 2.48801
I0415 23:06:50.008622 114710 solver.cpp:258] Train net output #0: loss: 50%-fire-rate = 0.0266628 (* 1 = 0.0266628 loss)
I0415 23:06:50.008658 114710 solver.cpp:258] Train net output #1: loss: classfication-error = 2.48801 (* 1 = 2.48801 loss)
I0415 23:06:50.008678 114710 solver.cpp:258] Train net output #2: loss: forcing-binary = -0.0266628 (* 1 = -0.0266628 loss)
I0415 23:06:50.008693 114710 sgd_solver.cpp:112] Iteration 100, lr = 0.001

I just modified the batch. Looking forward to reply sincerely.

[kevinlin311tw]

Thanks for pointing out this problem. I am confused because I cannot reproduce this error..

[IvyYZ]

Thanks for your reply.
I forgot to add the pre-training model.
After loading the model, I trained cifar10 and the model started to converge.

[yulijun1234]

您好！请问loss震荡的问题解决了吗？我在引用了预训练模型之后训练自己的数据集仍然出现了震荡现象，是我的训练集太小的原因吗。我是一千多张的。感谢您！