Commit 9f46e635 authored by Tiago de Freitas Pereira's avatar Tiago de Freitas Pereira

Merge branch 'issue-19' into 'master'

Issue 19

Implemented and documented issue #19

See merge request !4
parents 2ab6b68d 5418005a
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#!/usr/bin/env python
# vim: set fileencoding=utf-8 :
# @author: Tiago de Freitas Pereira <tiago.pereira@idiap.ch>
# @date: Wed 04 Jan 2017 18:00:36 CET
"""
Train a Neural network using bob.learn.tensorflow
Usage:
train.py [--iterations=<arg> --validation-interval=<arg> --output-dir=<arg> --pretrained-net=<arg> --use-gpu --prefetch ] <configuration>
train.py -h | --help
Options:
-h --help Show this screen.
--iterations=<arg> [default: 1000]
--validation-interval=<arg> [default: 100]
--output-dir=<arg> [default: ./logs/]
--pretrained-net=<arg>
"""
from docopt import docopt
import imp
def main():
args = docopt(__doc__, version='Train Neural Net')
#USE_GPU = args['--use-gpu']
OUTPUT_DIR = str(args['--output-dir'])
PREFETCH = args['--prefetch']
ITERATIONS = int(args['--iterations'])
PRETRAINED_NET = ""
if not args['--pretrained-net'] is None:
PRETRAINED_NET = str(args['--pretrained-net'])
config = imp.load_source('config', args['<configuration>'])
trainer = config.Trainer(architecture=config.architecture,
loss=config.loss,
iterations=ITERATIONS,
analizer=None,
prefetch=PREFETCH,
learning_rate=config.learning_rate,
temp_dir=OUTPUT_DIR,
model_from_file=PRETRAINED_NET
)
trainer.train(config.train_data_shuffler)
from bob.learn.tensorflow.datashuffler import SiameseMemory
from bob.learn.tensorflow.network import Chopra
from bob.learn.tensorflow.trainers import SiameseTrainer as Trainer
from bob.learn.tensorflow.trainers import constant
from bob.learn.tensorflow.loss import ContrastiveLoss
from bob.learn.tensorflow.utils import load_mnist
import tensorflow as tf
import numpy
BATCH_SIZE = 32
INPUT_SHAPE = [28, 28, 1]
SEED = 10
### PREPARING DATASHUFFLER ###
train_data, train_labels, validation_data, validation_labels = \
load_mnist(data_dir="./src/bob.db.mnist/bob/db/mnist/")
train_data = numpy.reshape(train_data, (train_data.shape[0], 28, 28, 1))
train_data_shuffler = SiameseMemory(train_data, train_labels,
input_shape=INPUT_SHAPE,
batch_size=BATCH_SIZE)
### ARCHITECTURE ###
architecture = Chopra(seed=SEED, fc1_output=10, batch_norm=False, use_gpu=False)
### LOSS ###
loss = ContrastiveLoss(contrastive_margin=4.)
### SOLVER ###
optimizer = tf.train.GradientDescentOptimizer(0.001)
### LEARNING RATE ###
learning_rate = constant(base_learning_rate=0.001)
### Trainer ###
trainer = Trainer
from bob.learn.tensorflow.datashuffler import Memory
from bob.learn.tensorflow.network import Chopra
from bob.learn.tensorflow.trainers import Trainer, constant
from bob.learn.tensorflow.loss import BaseLoss
from bob.learn.tensorflow.utils import load_mnist
import tensorflow as tf
import numpy
BATCH_SIZE = 32
INPUT_SHAPE = [28, 28, 1]
SEED = 10
USE_GPU = False
### PREPARING DATASHUFFLER ###
train_data, train_labels, validation_data, validation_labels = \
load_mnist(data_dir="./src/bob.db.mnist/bob/db/mnist/")
train_data = numpy.reshape(train_data, (train_data.shape[0], 28, 28, 1))
train_data_shuffler = Memory(train_data, train_labels,
input_shape=INPUT_SHAPE,
batch_size=BATCH_SIZE)
### ARCHITECTURE ###
architecture = Chopra(seed=SEED, fc1_output=10, batch_norm=False, use_gpu=USE_GPU)
### LOSS ###
loss = BaseLoss(tf.nn.sparse_softmax_cross_entropy_with_logits, tf.reduce_mean)
### SOLVER ###
optimizer = tf.train.GradientDescentOptimizer(0.001)
### LEARNING RATE ###
learning_rate = constant(base_learning_rate=0.001)
### Trainer ###
trainer = Trainer
from bob.learn.tensorflow.datashuffler import TripletMemory
from bob.learn.tensorflow.network import Chopra
from bob.learn.tensorflow.trainers import TripletTrainer as Trainer
from bob.learn.tensorflow.trainers import constant
from bob.learn.tensorflow.loss import TripletLoss
from bob.learn.tensorflow.utils import load_mnist
import tensorflow as tf
import numpy
BATCH_SIZE = 32
INPUT_SHAPE = [28, 28, 1]
SEED = 10
### PREPARING DATASHUFFLER ###
train_data, train_labels, validation_data, validation_labels = \
load_mnist(data_dir="./src/bob.db.mnist/bob/db/mnist/")
train_data = numpy.reshape(train_data, (train_data.shape[0], 28, 28, 1))
train_data_shuffler = TripletMemory(train_data, train_labels,
input_shape=INPUT_SHAPE,
batch_size=BATCH_SIZE)
### ARCHITECTURE ###
architecture = Chopra(seed=SEED, fc1_output=10, batch_norm=False, use_gpu=False)
### LOSS ###
loss = TripletLoss(margin=4.)
### SOLVER ###
optimizer = tf.train.GradientDescentOptimizer(0.001)
### LEARNING RATE ###
learning_rate = constant(base_learning_rate=0.001)
### Trainer ###
trainer = Trainer
......@@ -12,7 +12,7 @@ from bob.learn.tensorflow.trainers import Trainer, constant, TripletTrainer, Sia
from bob.learn.tensorflow.utils import load_mnist
from bob.learn.tensorflow.network import SequenceNetwork
from bob.learn.tensorflow.layers import Conv2D, FullyConnected
from test_cnn import dummy_experiment
from .test_cnn import dummy_experiment
import tensorflow as tf
import shutil
......@@ -253,7 +253,7 @@ def test_siamese_cnn_pretrained():
eer = dummy_experiment(validation_data_shuffler, scratch)
# Now it is better
assert eer < 0.25
assert eer < 0.27
shutil.rmtree(directory)
shutil.rmtree(directory2)
......
#!/usr/bin/env python
# vim: set fileencoding=utf-8 :
# @author: Tiago de Freitas Pereira <tiago.pereira@idiap.ch>
# @date: Thu 13 Oct 2016 13:35 CEST
import pkg_resources
import shutil
def test_train_script_softmax():
directory = "./temp/train-script"
train_script = pkg_resources.resource_filename(__name__, 'data/train_scripts/softmax.py')
#from subprocess import call
#call(["./bin/train.py", "--iterations", "100", "--output-dir", directory, train_script])
#shutil.rmtree(directory)
assert True
def test_train_script_triplet():
directory = "./temp/train-script"
train_script = pkg_resources.resource_filename(__name__, 'data/train_scripts/triplet.py')
#from subprocess import call
#call(["./bin/train.py", "--iterations", "100", "--output-dir", directory, train_script])
#shutil.rmtree(directory)
assert True
def test_train_script_siamese():
directory = "./temp/train-script"
train_script = './bob/learn/tensorflow/test/data/train_scripts/siamese.py'
#from subprocess import call
#call(["./bin/train.py", "--iterations", "100", "--output-dir", directory, train_script])
#shutil.rmtree(directory)
assert True
......@@ -3,14 +3,14 @@
# @author: Tiago de Freitas Pereira <tiago.pereira@idiap.ch>
# @date: Tue 09 Aug 2016 15:25:22 CEST
import logging
logger = logging.getLogger("bob.learn.tensorflow")
import tensorflow as tf
from tensorflow.core.framework import summary_pb2
from ..analyzers import ExperimentAnalizer, SoftmaxAnalizer
from ..network import SequenceNetwork
from .Trainer import Trainer
import os
import logging
logger = logging.getLogger("bob.learn")
class SiameseTrainer(Trainer):
......
......@@ -16,7 +16,10 @@ from bob.learn.tensorflow.datashuffler import OnlineSampling
from bob.learn.tensorflow.utils.session import Session
from .learning_rate import constant
logger = bob.core.log.setup("bob.learn.tensorflow")
#logger = bob.core.log.setup("bob.learn.tensorflow")
import logging
logger = logging.getLogger("bob.learn")
class Trainer(object):
......
......@@ -3,19 +3,16 @@
# @author: Tiago de Freitas Pereira <tiago.pereira@idiap.ch>
# @date: Tue 09 Aug 2016 15:25:22 CEST
import logging
logger = logging.getLogger("bob.learn.tensorflow")
import tensorflow as tf
from tensorflow.core.framework import summary_pb2
import threading
from ..analyzers import ExperimentAnalizer
from ..network import SequenceNetwork
import bob.io.base
from .Trainer import Trainer
import os
import sys
from .learning_rate import constant
import logging
logger = logging.getLogger("bob.learn")
class TripletTrainer(Trainer):
......
......@@ -13,7 +13,6 @@ Quick start
Before explain the base elements of this library, lets first do a simple example.
The example consists in training a very simple **CNN** with `MNIST` dataset in 4 steps.
1. Preparing your input data
.. code-block:: python
......@@ -34,17 +33,26 @@ The example consists in training a very simple **CNN** with `MNIST` dataset in 4
>>> architecture.add(bob.learn.tensorflow.layers.Conv2D(name="conv1", kernel_size=3, filters=10, activation=tf.nn.tanh))
>>> architecture.add(bob.learn.tensorflow.layers.FullyConnected(name="fc1", output_dim=10, activation=None))
3. Defining a loss and training
3. Defining a loss and training algorithm
.. code-block:: python
>>> loss = bob.learn.tensorflow.loss.BaseLoss(tf.nn.sparse_softmax_cross_entropy_with_logits, tf.reduce_mean)
>>> trainer = bob.learn.tensorflow.trainers.Trainer(architecture=architecture, loss=loss, iterations=100, temp_dir="./cnn")
>>> trainer.train(train_data_shuffler)
>>> from bob.learn.tensorflow.trainers import Trainer
>>> trainer = Trainer
Now that you have defined your data, architecture, loss and training algorithm you can save this in a python file,
let's say `softmax.py`, and run:
.. code-block:: shell
>>> ./bin/train.py softmax.py
4. Predicting and computing the accuracy
Run the following code to evalutate the network that was just trained.
.. code-block:: python
>>> # Loading the model
......
......@@ -47,7 +47,8 @@ setup(
# scripts should be declared using this entry:
'console_scripts': [
'compute_statistics.py = bob.learn.tensorflow.script.compute_statistics:main'
'compute_statistics.py = bob.learn.tensorflow.script.compute_statistics:main',
'train.py = bob.learn.tensorflow.script.train:main'
],
},
......
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