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How to extract the decision rules from scikit-learn decision-tree?
..., 'l', 4.5, 'col2')
3
(0, 'r', 0.5, 'col1')
(2, 'r', 4.5, 'col2')
(4, 'l', 2.5, 'col1')
5
(0, 'r', 0.5, 'col1')
(2, 'r', 4.5, 'col2')
(4, 'r', 2.5, 'col1')
6
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一文了解大数据领域创业的机会与方向 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
一文了解大数据领域创业的机会与方向跨界和融合是大数据思维里最重要的一环，大数据就像是钱一样，你得让它流动起来才能产生价值。在这篇大数据行业的SWOT分析文章中，也许可以找到你想了解的大数据行业创业环境、问...
How to change the CHARACTER SET (and COLLATION) throughout a database?
...TER DATABASE <database_name> CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change table collation:
ALTER TABLE <table_name> CONVERT TO CHARACTER SET utf8 COLLATE utf8mb4_0900_ai_ci;
change column collation:
ALTER TABLE <table_name> MODIFY <column_name> VARCHAR(255) CHARACT...
Store query result in a variable using in PL/pgSQL
...on't leave out the table name prefix on test_table.name or you'll get complaints about an ambiguous reference.
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How to install MySQLdb (Python data access library to MySQL) on Mac OS X?
... Python from the build directory you will get this error:
/Library/Python/2.5/site-packages/MySQL_python-1.2.3c1-py2.5-macosx-10.5-i386.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.5/site-packages/MySQL_python-1.2.3c1-py2.5-macosx-10.5-i386.egg/_mysql.pyc,...
WAMP shows error 'MSVCR100.dll' is missing when install
...ty you will install at some point.
UPDATE
If you are running WAMPServer 2.5 you also need the VC11 redist. Visual C++ Redistributable for Visual Studio 2012
29.08.2014 with WAMP 2.5
I agree that VC11 is needed and it is not a bad idea to have previous distributions installed. It will be needed ...
Dealing with multiple Python versions and PIP?
...xample, I want to use pip to explicitly install things to either my site 2.5 installation or my site 2.6 installation.
23...
How to drop rows of Pandas DataFrame whose value in a certain column is NaN
...sh
2 600016 20111231 600016 4.3 NaN
4 601939 20111231 601939 2.5 NaN
In [334]: df[~df.EPS.isnull()]
Out[334]:
STK_ID RPT_Date STK_ID.1 EPS cash
2 600016 20111231 600016 4.3 NaN
4 601939 20111231 601939 2.5 NaN
In [347]: df[~np.isnan(df.EPS)]
Out[347]:
ST...
Cannot change version of project facet Dynamic Web Module to 3.0?
...odule version in this line to 3.0 - <installed facet="jst.web" version="2.5"/>
And then:
Right-click on the project (in the Project Explorer panel).
Select Maven » Update Project (or press Alt+F5)
You'll find this file in the .settings directory within the Eclipse project.
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中文网（自研/维护）拓展 · App Inventor 2 中文网
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 中文网（自研/维护）拓展 ...