Java读取pkl文件_theano csv到pkl文件

大家好，又见面了，我是你们的朋友全栈君。

我正在尝试将一个pkl文件从csv起点加载到theano中

import numpy as np

import csv

import gzip, cPickle

from numpy import genfromtxt

import theano

import theano.tensor as T

#Open csv file and read in data

csvFile = “filename.csv”

my_data = genfromtxt(csvFile, delimiter=’,’, skip_header=1)

data_shape = “There are ” + repr(my_data.shape[0]) + ” samples of vector length ” + repr(my_data.shape[1])

num_rows = my_data.shape[0] # Number of data samples

num_cols = my_data.shape[1] # Length of Data Vector

total_size = (num_cols-1) * num_rows

data = np.arange(total_size)

data = data.reshape(num_rows, num_cols-1) # 2D Matrix of data points

data = data.astype(‘float32’)

label = np.arange(num_rows)

print label.shape

#label = label.reshape(num_rows, 1) # 2D Matrix of data points

label = label.astype(‘float32’)

print data.shape

#Read through data file, assume label is in last col

for i in range(my_data.shape[0]):

label[i] = my_data[i][num_cols-1]

for j in range(num_cols-1):

data[i][j] = my_data[i][j]

#Split data in terms of 70% train, 10% val, 20% test

train_num = int(num_rows * 0.7)

val_num = int(num_rows * 0.1)

test_num = int(num_rows * 0.2)

DataSetState = “This dataset has ” + repr(data.shape[0]) + ” samples of length ” + repr(data.shape[1]) + “. The number of training examples is ” + repr(train_num)

print DataSetState

train_set_x = data[:train_num]

train_set_y = label[:train_num]

val_set_x = data[train_num+1:train_num+val_num]

val_set_y = label[train_num+1:train_num+val_num]

test_set_x = data[train_num+val_num+1:]

test_set_y = label[train_num+val_num+1:]

# Divided dataset into 3 parts. split by percentage.

train_set = train_set_x, train_set_y

val_set = val_set_x, val_set_y

test_set = test_set_x, val_set_y

dataset = [train_set, val_set, test_set]

f = gzip.open(csvFile+’.pkl.gz’,’wb’)

cPickle.dump(dataset, f, protocol=2)

f.close()

当我通过Thenao(作为DBN或SdA)运行生成的pkl文件时，它预先训练得很好，这让我觉得数据存储正确 .

但是，当涉及到微调时，我收到以下错误：

epoch 1, minibatch 2775/2775, validation error 0.000000 %

Traceback (most recent call last):

File “SdA_custom.py”, line 489, in

test_SdA()

File “SdA_custom.py”, line 463, in test_SdA

test_losses = test_model()

File “SdA_custom.py”, line 321, in test_score

return [test_score_i(i) for i in xrange(n_test_batches)]

File “/usr/local/lib/python2.7/dist-packages/theano/compile/function_module.py”, line 606, in __call__

storage_map=self.fn.storage_map)

File “/usr/local/lib/python2.7/dist-packages/theano/compile/function_module.py”, line 595, in __call__

outputs = self.fn()

ValueError: Input dimension mis-match. (input[0].shape[0] = 10, input[1].shape[0] = 3)

Apply node that caused the error: Elemwise{neq,no_inplace}(argmax, Subtensor{int64:int64:}.0)

Inputs types: [TensorType(int64, vector), TensorType(int32, vector)]

Inputs shapes: [(10,), (3,)]

Inputs strides: [(8,), (4,)]

Inputs values: [‘not shown’, array([0, 0, 0], dtype=int32)]

Backtrace when the node is created:

File “/home/dean/Documents/DeepLearningRepo/DeepLearningTutorials-master/code/logistic_sgd.py”, line 164, in errors

return T.mean(T.neq(self.y_pred, y))

HINT: Use the Theano flag ‘exception_verbosity=high’ for a debugprint and storage map footprint of this apply node.

10是我的批次的大小，如果我改为批量大小为1，我得到以下内容：

ValueError: Input dimension mis-match. (input[0].shape[0] = 1, input[1].shape[0] = 0)

我认为我在制作pkl时错误地存储了标签，但我似乎无法发现正在发生的事情或为什么更改批处理会改变错误

希望你能帮忙！

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