Ubuntu python2.7.6 scikit-learn
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pip list查看下,发现已安装
http://scikit-learn.org/stable/tutorial/basic/tutorial.html#machine-learning-the-problem-setting scikit-learn参考
中文翻译 http://blog.csdn.net/prom1201/article/details/51604271
An introduction to machine learning with scikit-learn
Machine learning: the problem setting 大概讲一下机器学习
Loading an example dataset
scikit-learn comes witha few standard datasets, for instance theiris anddigitsdatasets for classification and the boston house prices dataset for regression.
from sklearn import datasets
iris = datasets.load_iris() #下载数据集
# print iris
digits = datasets.load_digits()
digits.data
gives access to the features that can be used to classify the digits samples:print(digits.data)
[[ 0. 0. 5. ..., 0. 0. 0.]
[ 0. 0. 0. ..., 10. 0. 0.]
[ 0. 0. 0. ..., 16. 9. 0.]
...,
[ 0. 0. 1. ..., 6. 0. 0.]
[ 0. 0. 2. ..., 12. 0. 0.]
[ 0. 0. 10. ..., 12. 1. 0.]]
and
digits.target
gives the ground truth for the digit dataset, thatis the number corresponding to each digit image that we are trying to learn:print digits.target
[0 1 2 ..., 8 9 8]
Shape of the data arrays
deprecated---不赞成,反对
How do I fix PyDev “Undefined variable from import” errors?
回答:
I've got a Python project using PyDev in Eclipse, and PyDev keeps generating false errors for my code. I have a modulesettings
that defines a settings
object. I import that in moduleb
and assign an attribute with:
from settings import settingssettings.main = object()
In some of my code--but not all of it, statements like:
from settings import settingsprint settings.main
... generate "Undefined variable from import: main" messages in the Eclipse code error pane, even though the code runs without a problem. How can I correct these?
stackoverflow Stack Overflow是一个与程序相关的IT技术问答网站。用户可以在网站免费提交问题,浏览问题,索引相关内容,在创建主页的时候使用简单的HTML。在问题页面,不会弹出任何广告,销售信息,JavaScript 窗口等。
The post marked as answer gives a workaround, not a solution.
This solution works for me:
- Go to
Window - Preferences - PyDev - Interpreters - Python Interpreter
- Go to the
Forced builtins
tab - Click on
New...
- Type the name of the module (
multiprocessing
in my case) and clickOK
Not only will the error messages disappear, the module members will also be recognized.
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