建议：2008 Mac w/OSX 10.8 host w/Virtualbox guest Ubuntu 12.04 设置 python、scikit-learn 和其他 ML 工具
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【中文标题】建议：2008 Mac w/OSX 10.8 host w/Virtualbox guest Ubuntu 12.04 设置 python、scikit-learn 和其他 ML 工具【英文标题】：Advice: 2008 Mac w/OSX 10.8 host w/Virtualbox guest Ubuntu 12.04 setting up python, scikit-learn & other ML tools 【发布时间】：2013-10-20 02:49:11 【问题描述】：我想就我需要完成的任务提供哪些选项或最佳选项的反馈。我有一台较旧的 Macbook pro 2008、8GB RAM、10.8 Mountain Lion。我安装了 Virtualbox 并安装了 Ubuntu 12.04 VM。安装 Ubuntu 的原因是能够运行一些我需要的 perl 脚本来收集数据并将它们放入 MongoDB（我无法在 OSX 中这样做）
从 MongoDB 中，我将数据提取为可以输入到开源机器学习库中的格式。我想从 scikit-learn 开始。其他可能是 WEKA 和小型 Hadoop（因为 Hadoop 也是我想开始学习使用的东西，所以我会用一块石头杀死两只鸟）。甚至可能是graphlab...
数据量不是很大，Mongo之前是原始形式，现在大概3-4GB左右。
因为我有 Ubuntu 虚拟机，所以我决定用它来运行 scikit learn。我在 Ubuntu 上安装了 python3，然后是 numpy、scipy、matplotlib，然后是 scikitlearn。当我运行鼻子测试时，我收到错误并失败。
我已经阅读了各种选项，但不确定最好的方法是什么。我是否使用 Ubuntu 或 OSX 上的预打包工具之一来运行 scikit learn 和 python3？例如：EPD Entought Canopy OR http://docs.continuum.io/anaconda/pkgs.html OR for OSX https://github.com/fonnesbeck/ScipySuperpack
我是否忘记了 python3 并使用 python 2.7 并从源代码安装所有内容..？ Ubuntu 或 OSX 哪个是使用 scikit learn 和其他流行的免费机器学习库/工具的最佳选择？
提前感谢您的帮助和时间。
下面是运行 nosetests sklearn --exe 的输出 这是输出的尾端。由于字数限制和错误，第一部分主要是警告..
./usr/local/lib/python3.2/dist-packages/sklearn/datasets/tests/test_base.py:155: UserWarning: Could not load sample images, PIL is not available.
/usr/local/lib/python3.2/dist-packages/sklearn/decomposition/fastica_.py:271: UserWarning: Ignoring n_components with whiten=False.
./usr/local/lib/python3.2/dist-packages/sklearn/utils/__init__.py:75: DeprecationWarning: Class ProbabilisticPCA is deprecated; ProbabilisticPCA will be removed in 0.16. WARNING: the covariance estimation was previously incorrect, your output might be different than under the previous versions. Use PCA that implements score and score_samples. To work with homoscedastic=False, you should use FactorAnalysis.
/usr/local/lib/python3.2/dist-packages/sklearn/externals/joblib/test/test_func_inspect.py:122: UserWarning: Cannot inspect object functools.partial(<function f at 0xba47dec>, 1), ignore list will not work.
nose.tools.assert_equal(filter_args(ff, ['y'], (1, )),
======================================================================
ERROR: Failure: SyntaxError (invalid syntax (test_text.py, line 561))
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/failure.py", line 38, in runTest
raise self.exc_val.with_traceback(self.tb)
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/loader.py", line 413, in loadTestsFromName
addr.filename, addr.module)
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/importer.py", line 47, in importFromPath
return self.importFromDir(dir_path, fqname)
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/importer.py", line 94, in importFromDir
mod = load_module(part_fqname, fh, filename, desc)
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.metrics.tests.test_metrics.test_classification_report_multiclass_with_string_label
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/tests/test_metrics.py", line 822, in test_classification_report_multiclass_with_string_label
report = classification_report(y_true, y_pred)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/metrics.py", line 1828, in classification_report
average=None)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/metrics.py", line 1550, in precision_recall_fscore_support
'precision', 'predicted', average)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/metrics.py", line 1331, in _prf_divide
result = numerator / denominator
ValueError: operands could not be broadcast together with shapes (3) (4)
======================================================================
ERROR: Failure: SyntaxError (invalid syntax (test_multiclass.py, line 53))
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/failure.py", line 38, in runTest
raise self.exc_val.with_traceback(self.tb)
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/loader.py", line 413, in loadTestsFromName
addr.filename, addr.module)
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/importer.py", line 47, in importFromPath
return self.importFromDir(dir_path, fqname)
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/importer.py", line 94, in importFromDir
mod = load_module(part_fqname, fh, filename, desc)
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/tests/test_multiclass.py", line 53
np.array([u'a', u'b', u'c']),
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_all_estimators
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 58, in test_all_estimators
estimators = all_estimators(include_meta_estimators=True)
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_all_estimator_no_base_class
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 117, in test_all_estimator_no_base_class
for name, Estimator in all_estimators():
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_estimators_sparse_data
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 131, in test_estimators_sparse_data
estimators = all_estimators()
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_transformers_sparse_data
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 258, in test_transformers_sparse_data
estimators = all_estimators(type_filter='transformer')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_estimators_nan_inf
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 301, in test_estimators_nan_inf
estimators = all_estimators()
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_transformers_pickle
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 392, in test_transformers_pickle
transformers = all_estimators(type_filter='transformer')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_classifiers_one_label
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 457, in test_classifiers_one_label
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_clustering
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 492, in test_clustering
clustering = all_estimators(type_filter='cluster')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_classifiers_train
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 530, in test_classifiers_train
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_classifiers_classes
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 605, in test_classifiers_classes
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_classifiers_input_shapes
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 650, in test_classifiers_input_shapes
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_classifiers_pickle
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 691, in test_classifiers_pickle
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_regressors_int
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 749, in test_regressors_int
regressors = all_estimators(type_filter='regressor')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_regressors_train
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 780, in test_regressors_train
regressors = all_estimators(type_filter='regressor')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_regressor_pickle
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 823, in test_regressor_pickle
regressors = all_estimators(type_filter='regressor')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_class_weight_classifiers
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 889, in test_class_weight_classifiers
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_class_weight_auto_classifies
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 926, in test_class_weight_auto_classifies
classifiers = all_estimators(type_filter='classifier')
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_estimators_overwrite_params
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 974, in test_estimators_overwrite_params
estimators = all_estimators(type_filter=est_type)
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
ERROR: sklearn.tests.test_common.test_cluster_overwrite_params
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/tests/test_common.py", line 1018, in test_cluster_overwrite_params
clusterers = all_estimators(type_filter="cluster")
File "/usr/local/lib/python3.2/dist-packages/sklearn/utils/testing.py", line 300, in all_estimators
module = __import__(modname, fromlist="dummy")
File "/usr/local/lib/python3.2/dist-packages/sklearn/feature_extraction/tests/test_text.py", line 561
expected_stop_words = set([u'celeri', u'tomato', u'copyright', u'coke',
^
SyntaxError: invalid syntax
======================================================================
FAIL: Test confusion matrix - binary classification case
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/tests/test_metrics.py", line 630, in test_confusion_matrix_binary
[str(y) for y in y_pred])
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/tests/test_metrics.py", line 625, in test
assert_array_almost_equal(mcc, true_mcc, decimal=2)
File "/usr/lib/python3/dist-packages/numpy/testing/utils.py", line 800, in assert_array_almost_equal
header=('Arrays are not almost equal to %d decimals' % decimal))
File "/usr/lib/python3/dist-packages/numpy/testing/utils.py", line 636, in assert_array_compare
raise AssertionError(msg)
AssertionError:
Arrays are not almost equal to 2 decimals
(mismatch 100.0%)
x: array(0.6011393316693135)
y: array(0.5715476066494083)
======================================================================
FAIL: sklearn.metrics.tests.test_metrics.test_classification_report_multiclass_with_unicode_label
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/tests/test_metrics.py", line 856, in test_classification_report_multiclass_with_unicode_label
assert_equal(report, expected_report)
AssertionError: ' precision recall f1-score support\n\n blue¢ 0.63 [truncated]... != ' precision recall f1-score support\n\n blue¢ 0.83 [truncated]...
precision recall f1-score support
- blue¢ 0.63 0.33 0.44 36
- green¢ 0.17 0.17 0.17 6
+ blue¢ 0.83 0.79 0.81 24
+ green¢ 0.33 0.10 0.15 31
red¢ 0.42 0.90 0.57 20
- avg / total 0.52 0.50 0.45 62
? ^ ^ ----------
+ avg / total 0.51 0.53 0.47 75
? ^ ^ ++++++++++
======================================================================
FAIL: Ensure that classification metrics with string labels
----------------------------------------------------------------------
Traceback (most recent call last):
File "/usr/local/lib/python3.2/dist-packages/nose-1.3.0-py3.2.egg/nose/case.py", line 198, in runTest
self.test(*self.arg)
File "/usr/local/lib/python3.2/dist-packages/sklearn/metrics/tests/test_metrics.py", line 1177, in test_invariance_string_vs_numbers_labels
"test".format(name))
File "/usr/lib/python3/dist-packages/numpy/testing/utils.py", line 707, in assert_array_equal
verbose=verbose, header='Arrays are not equal')
File "/usr/lib/python3/dist-packages/numpy/testing/utils.py", line 636, in assert_array_compare
raise AssertionError(msg)
AssertionError:
Arrays are not equal
precision_score failed string vs number invariance test
(mismatch 100.0%)
x: array(0.85)
y: array(0.6666666666666666)
----------------------------------------------------------------------
Ran 1714 tests in 129.977s
FAILED (SKIP=16, errors=23, failures=3)
【问题讨论】：
我读过一篇文章说使用 python 2.7 和 python 3 并没有太大区别。我使用 python 3 的原因是学习和使用最新的东西，我假设替换 python 2.7 .因此，如果我使用 python 2.7，我可以使用其中一个预构建的包或仍然从源代码构建。话虽如此，Ubuntu VM 会比 OSX（我的实际操作系统和主机）更好用吗？ 如果您希望我们帮助您找到问题的根源，请仅报告错误消息的回溯。 我建议在 OS X 上为 python 2.7 使用 anaconda。虚拟盒子有什么用？ ogrisel - 我编辑了带有输出错误的帖子，谢谢。 Andreas - 我需要 Ubuntu 或能够运行 perl 脚本来收集数据并将其存储到 MongoDB。我无法在 OSX 上运行它们。我读过关于蟒蛇的好东西。我会试试看。 您正在运行一个不支持 Python3 的过时 scikit-learn 版本。升级到 0.14。 【参考方案1】：不支持 Python 3.2（还没有？），如 github 上项目的 README.rst 文件中所写。请暂时安装 Python 3.3 或坚持使用 Python 2.7。
【讨论】：
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