Mercurial > ift6266

annotate datasets/gzpklfile.py @ 252:7dd43ef66d15

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
ajout de fonctionnalite pour different finetune dataset
author SylvainPL <sylvain.pannetier.lebeuf@umontreal.ca>
date Tue, 16 Mar 2010 21:24:41 -0400
parents 4cfd0eb438af
children 966272e7f14b
rev   line source
222
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
1 import gzip
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
2 try:
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
3 import cPickle as pickle
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
4 except ImportError:
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
5 import pickle
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
6
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
7 from dataset import DataSet
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
8 from dsetiter import DataIterator
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
9 from itertools import izip
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
10
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
11 class ArrayFile(object):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
12 def __init__(self, ary):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
13 self.ary = ary
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
14 self.pos = 0
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
15
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
16 def read(self, num):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
17 res = self.ary[self.pos:self.pos+num]
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
18 self.pos += num
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
19 return res
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
20
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
21 class GzpklDataSet(DataSet):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
22 def __init__(self, fname):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
23 self._fname = fname
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
24 self._train = 0
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
25 self._valid = 1
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
26 self._test = 2
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
27
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
28 def _load(self):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
29 f = gzip.open(self._fname, 'rb')
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
30 try:
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
31 self.datas = pickle.load(f)
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
32 finally:
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
33 f.close()
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
34
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
35 def _return_it(self, batchsz, bufsz, id):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
36 if not hasattr(self, 'datas'):
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
37 self._load()
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
38 return izip(DataIterator([ArrayFile(self.datas[id][0])], batchsz, bufsz),
4cfd0eb438af Add mnist to datasets (and supporting code).
Arnaud Bergeron <abergeron@gmail.com>
parents:
diff changeset
39 DataIterator([ArrayFile(self.datas[id][1])], batchsz, bufsz))