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---
layout: default
title: Caffe
---
Define the MNIST Solver
=======================
The page is under construction. For now, check out the comments in the solver prototxt file, which explains each line in the prototxt:
# The training protocol buffer definition
train_net: "lenet_train.prototxt"
# The testing protocol buffer definition
test_net: "lenet_test.prototxt"
# test_iter specifies how many forward passes the test should carry out.
# In the case of MNIST, we have test batch size 100 and 100 test iterations,
# covering the full 10,000 testing images.
test_iter: 100
# Carry out testing every 500 training iterations.
test_interval: 500
# The base learning rate, momentum and the weight decay of the network.
base_lr: 0.01
momentum: 0.9
weight_decay: 0.0005
# The learning rate policy
lr_policy: "inv"
gamma: 0.0001
power: 0.75
# Display every 100 iterations
display: 100
# The maximum number of iterations
max_iter: 10000
# snapshot intermediate results
snapshot: 5000
snapshot_prefix: "lenet"
# solver mode: 0 for CPU and 1 for GPU
solver_mode: 1
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