The concept of Version Space was introduced, and how to shorten Version Space was discussed.

介绍了“版本空间”的概念，提出了缩小“版本空间”的方法。

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Currently, the leading methods of sampling generally choose the instance or instances that can reduce the version space by half.

当前主流的采样算法往往考虑选取的样例尽可能平分版本空间。

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Then we review multi-class classifiers commonly adopted and propose a multi-class classifier based on analytical center of version space.

同时在分析现有多类分类机器不足的基础上，提出了一种基于可行域解析中心的多类分类器。

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The researchers found the presence of carbon thirteen, a version of the carbon atom that is usually found in space.

VOA: special.2009.09.30

Another version of space history is available these days, though.

NEWYORKER: Faces, Places, Spaces

Last week, a malware-loaded version of Angry Birds Space for Android made an appearance.

FORBES: Android Malware Masquerading As Instagram App

Bring back an updated version of the Vision for Space Exploration for the 21st century.

FORBES: NASA, Got Space Exploration? Get Goals, Get Funding and Get Uhura.