Python AttributeDict.valid方法代碼示例

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def get_mnist_data_dict(unlabeled_samples, valid_set_size, test_set=False):
    train_set = MNIST(("train",))
    # Make sure the MNIST data is in right format
    train_set.data_sources = (
        (train_set.data_sources[0] / 255.).astype(numpy.float32),
        train_set.data_sources[1])

    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    rng = numpy.random.RandomState(seed=1)
    rng.shuffle(all_ind)

    data = AttributeDict()

    # Choose the training set
    data.train = train_set
    data.train_ind = all_ind[:unlabeled_samples]

    # Then choose validation set from the remaining indices
    data.valid = train_set
    data.valid_ind = numpy.setdiff1d(all_ind, data.train_ind)[:valid_set_size]
    logger.info('Using %d examples for validation' % len(data.valid_ind))
    # Only touch test data if requested
    if test_set:
        data.test = MNIST(("test",))
        data.test_ind = numpy.arange(data.test.num_examples)

    return data

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, test_set=False):
    dataset_class, training_set_size = {"cifar10": (CIFAR10, 40000), "mnist": (MNIST, 50000)}[p.dataset]

    # Allow overriding the default from command line
    if p.get("unlabeled_samples") is not None:
        training_set_size = p.unlabeled_samples

    train_set = dataset_class("train")

    # Make sure the MNIST data is in right format
    if p.dataset == "mnist":
        d = train_set.data_sources[train_set.sources.index("features")]
        assert numpy.all(d <= 1.0) and numpy.all(d >= 0.0), "Make sure data is in float format and in range 0 to 1"

    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    if p.get("dseed"):
        rng = numpy.random.RandomState(seed=p.dseed)
        rng.shuffle(all_ind)

    d = AttributeDict()

    # Choose the training set
    d.train = train_set
    d.train_ind = all_ind[:training_set_size]

    # Then choose validation set from the remaining indices
    d.valid = train_set
    d.valid_ind = numpy.setdiff1d(all_ind, d.train_ind)[: p.valid_set_size]
    logger.info("Using %d examples for validation" % len(d.valid_ind))

    # Only touch test data if requested
    if test_set:
        d.test = dataset_class("test")
        d.test_ind = numpy.arange(d.test.num_examples)

    # Setup optional whitening, only used for Cifar-10
    in_dim = train_set.data_sources[train_set.sources.index("features")].shape[1:]
    if len(in_dim) > 1 and p.whiten_zca > 0:
        assert numpy.product(in_dim) == p.whiten_zca, "Need %d whitening dimensions, not %d" % (
            numpy.product(in_dim),
            p.whiten_zca,
        )
    cnorm = ContrastNorm(p.contrast_norm) if p.contrast_norm != 0 else None

    def get_data(d, i):
        data = d.get_data(request=i)[d.sources.index("features")]
        # Fuel provides Cifar in uint8, convert to float32
        data = numpy.require(data, dtype=numpy.float32)
        return data if cnorm is None else cnorm.apply(data)

    if p.whiten_zca > 0:
        logger.info("Whitening using %d ZCA components" % p.whiten_zca)
        whiten = ZCA()
        whiten.fit(p.whiten_zca, get_data(d.train, d.train_ind))
    else:
        whiten = None

    return in_dim, d, whiten, cnorm

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, test_set=False):
    dataset_class, training_set_size = {
        'cifar10': (CIFAR10, 40000),
        'mnist': (MNIST, 50000),
        'reddit': (SubredditTopPhotosFeatures22, 20000)
    }[p.dataset]

    # Allow overriding the default from command line
    if p.get('unlabeled_samples') is not None:
        training_set_size = p.unlabeled_samples

    train_set = dataset_class(("train",))

    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    if p.get('dseed'):
        rng = numpy.random.RandomState(seed=p.dseed)
        rng.shuffle(all_ind)

    d = AttributeDict()

    # Choose the training set
    d.train = train_set
    d.train_ind = all_ind[:training_set_size]

    # Then choose validation set from the remaining indices
    d.valid = train_set
    d.valid_ind = numpy.setdiff1d(all_ind, d.train_ind)[:p.valid_set_size]
    logger.info('Using %d examples for validation' % len(d.valid_ind))

    # Only touch test data if requested
    if test_set:
        d.test = dataset_class(("test",))
        d.test_ind = numpy.arange(d.test.num_examples)

    # Setup optional whitening, only used for Cifar-10
    in_dim = train_set.data_sources[train_set.sources.index('features')].shape[1:]
    if len(in_dim) > 1 and p.whiten_zca > 0:
        assert numpy.product(in_dim) == p.whiten_zca, \
            'Need %d whitening dimensions, not %d' % (numpy.product(in_dim),
                                                      p.whiten_zca)
    cnorm = ContrastNorm(p.contrast_norm) if p.contrast_norm != 0 else None

    def get_data(d, i):
        data = d.get_data(request=i)[d.sources.index('features')]
        # Fuel provides Cifar in uint8, convert to float32
        data = numpy.require(data, dtype=numpy.float32)
        return data if cnorm is None else cnorm.apply(data)

    if p.whiten_zca > 0:
        logger.info('Whitening using %d ZCA components' % p.whiten_zca)
        whiten = ZCA()
        whiten.fit(p.whiten_zca, get_data(d.train, d.train_ind))
    else:
        whiten = None

    return in_dim, d, whiten, cnorm

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, test_set=False):
    dataset_class, training_set_size = {
        'cifar10': (CIFAR10, 40000),
        'mnist': (MNIST, 50000),
    }[p.dataset]

    # Allow overriding the default from command line
    if p.get('unlabeled_samples') is not None:
        training_set_size = p.unlabeled_samples

    train_set = dataset_class("train")

    # Make sure the MNIST data is in right format
    if p.dataset == 'mnist':
        d = train_set.data_sources[train_set.sources.index('features')]
        assert numpy.all(d <= 1.0) and numpy.all(d >= 0.0), \
            'Make sure data is in float format and in range 0 to 1'

    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    if p.get('dseed'):
        rng = numpy.random.RandomState(seed=p.dseed)
        rng.shuffle(all_ind)

    d = AttributeDict()

    # Choose the training set
    d.train = train_set
    d.train_ind = all_ind[:training_set_size]

    # Then choose validation set from the remaining indices
    d.valid = train_set
    d.valid_ind = numpy.setdiff1d(all_ind, d.train_ind)[:p.valid_set_size]
    logger.info('Using %d examples for validation' % len(d.valid_ind))

    # Only touch test data if requested
    if test_set:
        d.test = dataset_class("test")
        d.test_ind = numpy.arange(d.test.num_examples)

    in_dim = train_set.data_sources[train_set.sources.index('features')].shape[1:]

    def get_data(d, i):
        data = d.get_data(request=i)[d.sources.index('features')]
        # Fuel provides Cifar in uint8, convert to float32
        data = numpy.require(data, dtype=numpy.float32)
        return data if cnorm is None else cnorm.apply(data)

    return in_dim, d

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, test_set=False):
    if p.dataset in ['cifar10','mnist']:
        dataset_class, training_set_size = {
            'cifar10': (CIFAR10, 40000),
            'mnist': (MNIST, 50000),
        }[p.dataset]
    else:
        from fuel.datasets import H5PYDataset
        from fuel.utils import find_in_data_path
        from functools import partial
        fn=p.dataset
        fn=os.path.join(fn, fn + '.hdf5')
        def dataset_class(which_sets):
            return H5PYDataset(file_or_path=find_in_data_path(fn),
                               which_sets=which_sets,
                               load_in_memory=True)
        training_set_size = None

    train_set = dataset_class(["train"])

    # Allow overriding the default from command line
    if p.get('unlabeled_samples') is not None and p.unlabeled_samples >= 0:
        training_set_size = p.unlabeled_samples
    elif training_set_size is None:
        training_set_size = train_set.num_examples

    # Make sure the MNIST data is in right format
    if p.dataset == 'mnist':
        d = train_set.data_sources[train_set.sources.index('features')]
        assert numpy.all(d <= 1.0) and numpy.all(d >= 0.0), \
            'Make sure data is in float format and in range 0 to 1'

    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    if p.get('dseed'):
        rng = numpy.random.RandomState(seed=p.dseed)
        rng.shuffle(all_ind)

    d = AttributeDict()

    # Choose the training set
    d.train = train_set
    d.train_ind = all_ind[:training_set_size]

    # Then choose validation set from the remaining indices
    d.valid = train_set
    d.valid_ind = numpy.setdiff1d(all_ind, d.train_ind)[:p.valid_set_size]
    logger.info('Using %d examples for validation' % len(d.valid_ind))

    # Only touch test data if requested
    if test_set:
        d.test = dataset_class(["test"])
        d.test_ind = numpy.arange(d.test.num_examples)

    # Setup optional whitening, only used for Cifar-10
    in_dim = train_set.data_sources[train_set.sources.index('features')].shape[1:]
    if len(in_dim) > 1 and p.whiten_zca > 0:
        assert numpy.product(in_dim) == p.whiten_zca, \
            'Need %d whitening dimensions, not %d' % (numpy.product(in_dim),
                                                      p.whiten_zca)
    cnorm = ContrastNorm(p.contrast_norm) if p.contrast_norm != 0 else None

    def get_data(d, i):
        data = d.get_data(request=i)[d.sources.index('features')]
        # Fuel provides Cifar in uint8, convert to float32
        data = numpy.require(data, dtype=numpy.float32)
        return data if cnorm is None else cnorm.apply(data)

    if p.whiten_zca > 0:
        logger.info('Whitening using %d ZCA components' % p.whiten_zca)
        whiten = ZCA()
        whiten.fit(p.whiten_zca, get_data(d.train, d.train_ind))
    else:
        whiten = None

    return in_dim, d, whiten, cnorm

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, test_set=False):
    dataset_class = {
        'cifar10': (CIFAR10),
        'jos' : (JOS),
        'mnist': (MNIST),
    }[p.dataset]

    training_set_size = p.unlabeled_samples 

    # Allow overriding the default from command line
    if p.get('unlabeled_samples') is not None:
        training_set_size = p.unlabeled_samples

    train_set = dataset_class(["train"])

    # Make sure the MNIST data is in right format
    if p.dataset == 'mnist':
        d = train_set.data_sources[train_set.sources.index('features')]
        assert numpy.all(d <= 1.0) and numpy.all(d >= 0.0), \
            'Make sure data is in float format and in range 0 to 1'

    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    if p.get('dseed'):
        rng = numpy.random.RandomState(seed=p.dseed)
        rng.shuffle(all_ind)

    d = AttributeDict()

    # Choose the training set
    d.train = train_set
    d.train_ind = all_ind[:training_set_size]

    # Then choose validation set from the remaining indices
    d.valid = train_set
    d.valid_ind = numpy.setdiff1d(all_ind, d.train_ind)[:p.valid_set_size]
    logger.info('Using %d examples for validation' % len(d.valid_ind))

    # Only touch test data if requested
    if test_set:
        d.test = dataset_class(["test"])
        d.test_ind = numpy.arange(d.test.num_examples)

    # Setup optional whitening, only used for Cifar-10
    fn = find_in_data_path(train_set.filename)
    #iprint(fn)
    s1 = H5PYDataset(fn, ("train",))
    handle = s1.open()
    in_dim =  s1.get_data(handle,slice(0,1))[0].shape[1:]
    s1.close(handle)
    #in_dim = train_set.data_sources[train_set.sources.index('features')].shape[1:]
    if len(in_dim) > 1 and p.whiten_zca > 0:
        assert numpy.product(in_dim) == p.whiten_zca, \
            'Need %d whitening dimensions, not %d' % (numpy.product(in_dim),
                                                      p.whiten_zca)
    cnorm = ContrastNorm(p.contrast_norm) if p.contrast_norm != 0 else None

    def get_data(d, i):
        data = d.get_data(request=list(i))[d.sources.index('features')]
        # Fuel provides Cifar in uint8, convert to float32
        data = numpy.require(data, dtype=numpy.float32)
        return data if cnorm is None else cnorm.apply(data)

    if p.whiten_zca > 0:
        logger.info('Whitening using %d ZCA components' % p.whiten_zca)
        whiten = ZCA()
        whiten.fit(p.whiten_zca, get_data(d.train, d.train_ind))
    else:
        whiten = None

    return in_dim, d, whiten, cnorm

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, test_set=False):

    # CIFAR10與MNIST都是封裝過後的HDF5數據集
    # p.dataset為命令行傳入的參數，在cifar10與mnist之間選擇其一
    dataset_class, training_set_size = {
        'cifar10': (CIFAR10, 40000),
        'mnist': (MNIST, 50000),
    }[p.dataset]

    # 可以通過命令行指定為標注樣本的大小
    # Allow overriding the default from command line
    if p.get('unlabeled_samples') is not None:
        training_set_size = p.unlabeled_samples

    # 選出mnist數據集裏麵的train子集
    train_set = dataset_class("train")

    # Make sure the MNIST data is in right format
    # 對minst進行數據檢查，查看是否所有值都在0-1之間且都為float
    if p.dataset == 'mnist':
        # features大小為60000＊1＊28＊28，num_examples*channel*height*weight，minst為灰度圖片所以channel=1
        d = train_set.data_sources[train_set.sources.index('features')]
        assert numpy.all(d <= 1.0) and numpy.all(d >= 0.0), \
            'Make sure data is in float format and in range 0 to 1'

    # 隨機打亂樣本順序
    # Take all indices and permutate them
    all_ind = numpy.arange(train_set.num_examples)
    if p.get('dseed'):
        # 通過dseed製作一個隨機器，用於打亂樣本編號
        rng = numpy.random.RandomState(seed=p.dseed)
        rng.shuffle(all_ind)

    d = AttributeDict()

    # Choose the training set
    d.train = train_set
    # 此時index應該都被打亂
    # 取出前training_set_size個數的樣本做為訓練集（的index）
    d.train_ind = all_ind[:training_set_size]

    # 選出一部分數據作為驗證集
    # Then choose validation set from the remaining indices
    d.valid = train_set
    # 全部的數據集中去掉訓練用的樣本，剩下的作為驗證集
    d.valid_ind = numpy.setdiff1d(all_ind, d.train_ind)[:p.valid_set_size]

    logger.info('Using %d examples for validation' % len(d.valid_ind))

    # 如果有測試數據的話，生成測試數據的index
    # Only touch test data if requested
    if test_set:
        d.test = dataset_class("test")
        d.test_ind = numpy.arange(d.test.num_examples)

    # Setup optional whitening, only used for Cifar-10
    # 計算特征值的維度，shape[1:]：獲取第一個樣本的維度
    in_dim = train_set.data_sources[train_set.sources.index('features')].shape[1:]
    if len(in_dim) > 1 and p.whiten_zca > 0:
        assert numpy.product(in_dim) == p.whiten_zca, \
            'Need %d whitening dimensions, not %d' % (numpy.product(in_dim),
                                                      p.whiten_zca)

    # 歸一化參數如果不為空，創建歸一化類
    cnorm = ContrastNorm(p.contrast_norm) if p.contrast_norm != 0 else None

    def get_data(d, i):
        data = d.get_data(request=i)[d.sources.index('features')]

        # Fuel provides Cifar in uint8, convert to float32
        # 檢查data集合中的item是否符合float32類型
        data = numpy.require(data, dtype=numpy.float32)
        # TODO ContrastNorm.apply
        return data if cnorm is None else cnorm.apply(data)

    if p.whiten_zca > 0:
        logger.info('Whitening using %d ZCA components' % p.whiten_zca)
        # TODO ZCA
        whiten = ZCA()
        whiten.fit(p.whiten_zca, get_data(d.train, d.train_ind))
    else:
        whiten = None

    return in_dim, d, whiten, cnorm

# 需要導入模塊: from utils import AttributeDict [as 別名]
# 或者: from utils.AttributeDict import valid [as 別名]
def setup_data(p, use_unlabeled=True, use_labeled=True):
    assert use_unlabeled or use_labeled, 'Cannot train without cost'
    dataset_class = DATASETS[p.dataset]
    dataset = dataset_class(p)
    train_ind = dataset.trn.ind

    if 'labeled_samples' not in p or p.labeled_samples == 0:
        n_labeled = len(train_ind)
    else:
        n_labeled = p.labeled_samples

    if 'unlabeled_samples' not in p:
        n_unlabeled = len(train_ind)
    else:
        n_unlabeled = p.unlabeled_samples

    assert p.batch_size <= n_labeled, "batch size too large"
    assert len(train_ind) >= n_labeled
    assert len(train_ind) >= n_unlabeled, "not enough training samples"
    assert n_labeled <= n_unlabeled, \
        "at least as many unlabeled samples as number of labeled samples"

    # If not using all labels, let's balance classes
    balance_classes = n_labeled < len(train_ind)

    if balance_classes and use_labeled:
        # Ensure each label is equally represented
        y = dataset.get_train_labels()
        n_classes = numpy.max(y) + 1

        n_from_each_class = n_labeled / n_classes
        logger.info('n_sample_from_each_class {0}'.format(n_from_each_class))
        assert n_labeled % n_classes == 0

        i_labeled = []
        for c in xrange(n_classes):
            i = (train_ind[y[:, 0] == c])[:n_from_each_class]
            if len(i) < n_from_each_class:
                logger.warning('Class {0} : only got {1}'.format(c, len(i)))
            i_labeled += list(i)

    else:
        i_labeled = train_ind[:n_labeled]

    def make_unlabeled_set(train_ind, i_labeled, n_unlabeled):
        """ i_unused_labeled: the labels that are not used in i_labeled.
        n_unlabeled_needed: the number of need for i_unlabeled beyond len(i_labeled)
        """
        i_unused_labeled = list(set(train_ind) - set(i_labeled))
        n_unlabeled_needed = n_unlabeled - len(i_labeled)
        i_unlabeled = i_unused_labeled[:n_unlabeled_needed]
        i_unlabeled.extend(i_labeled)

        return i_unlabeled

    i_unlabeled = make_unlabeled_set(train_ind, i_labeled, n_unlabeled)

    logger.info('Creating data set with %d labeled and %d total samples' %
                (len(i_labeled), len(i_unlabeled)))

    streams = AttributeDict()

    def make(kind, ind_labeled, ind_unlabeled):
        ds_labeled, ds_unlabeled = None, None
        if use_labeled:
            ds_labeled = dataset.get_datastream(kind, ind_labeled)
        if use_unlabeled:
            ds_unlabeled = dataset.get_datastream(kind, ind_unlabeled)

        return combine_datastreams(ds_labeled, ds_unlabeled)

    streams.train = make('trn', i_labeled, i_unlabeled)
    streams.valid = make('val', None, None)  # use all indices
    streams.test = make('tst', None, None)  # use all indices

    return streams