Mercurial > pylearn

annotate doc/v2_planning/learn_meeting.py @ 1170:53340a8df1fa

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
coding_style: Started to write full code sample
author Olivier Delalleau <delallea@iro>
date Fri, 17 Sep 2010 14:37:00 -0400
parents 8c448829db30
children
rev   line source
1087
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
1
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
2
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
3 def bagging(learner_factory):
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
4 for i in range(N):
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
5 learner_i = learner_factory.new()
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
6 # todo: get dataset_i ??
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
7 learner_i.use_dataset(dataset_i)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
8 learner_i.train()
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
9 '''
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
10 List of tasks types:
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
11 Attributes
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
12
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
13 sequential
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
14 spatial
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
15 structured
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
16 semi-supervised
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
17 missing-values
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
18
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
19
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
20 Supervised (x,y)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
21
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
22 classification
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
23 regression
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
24 probabilistic classification
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
25 ranking
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
26 conditional density estimation
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
27 collaborative filtering
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
28 ordinal regression ?= ranking
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
29
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
30 Unsupervised (x)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
31
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
32 de-noising
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
33 feature learning ( transformation ) PCA, DAA
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
34 density estimation
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
35 inference
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
36
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
37 Other
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
38
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
39 generation (sampling)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
40 structure learning ???
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
41
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
42
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
43 Notes on metrics & statistics:
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
44 - some are applied to an example, others on a batch
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
45 - most statistics are on the dataset
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
46 '''
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
47 class Learner(Object):
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
48
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
49 #def use_dataset(dataset)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
50
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
51 # return a dictionary of hyperparameters names(keys)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
52 # and value(values)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
53 def get_hyper_parameters()
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
54 def set_hyper_parameters(dictionary)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
55
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
56
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
57
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
58
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
59 # Ver B
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
60 def eval(dataset)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
61 def predict(dataset)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
62
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
63 # Trainable
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
64 def train(dataset) # train until complition
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
65
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
66 # Incremental
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
67 def use_dataset(dataset)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
68 def adapt(n_steps =1)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
69 def has_converged()
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
70
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
71 #
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
72
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
73 class HyperLearner(Learner):
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
74
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
75 ### def get_hyper_parameter_distribution(name)
8c448829db30 learning committee first draft of an api
Razvan Pascanu <r.pascanu@gmail.com>
parents:
diff changeset
76 def set_hyper_parameters_distribution(dictionary)