理学 学习理论 释 PAC learning PAC学习 PAC (Probably Approximately Correct)学习，中文翻译为概率近似正确学习，是计算学习理论中最重要的研究内容之一，由图灵奖得主Valiant [1]于1984年首先提出的学习框架。PAC学习给出了一种数学形式化刻画机器学习的框架，基于此框架，很多学习问题得以从理论上进一步探讨，如什么样的学习任务是可以学习的。
人工智能 机器学习 释文 probably approximately correct learning 概率近似正确学习
- Record of Longhu Mountain
- Record of merits
- Record of Music
- Record of My Friends and Masters’Talks
- record of opera actor's costumes and paraphernalia for performance at the Confucian Mansion of Qufu City
- Record of Orchard Town
- Record of Painters in Shaoxing
- Record of Painters in Wuhu
- Record of Painters in Yangzhou
- Record of Painters in Yushan
- Record of Portraying Dream
- Record of Puzhou Bangzi Opera
- Record of Rites Compiled by Elder Dai
- record of river variation
- Record of Rumors from the Man of Su River
- Record of Selling Books in Bianliang
- Record of Selling Books in Jinling
- Record of Sense on Calligraphy, Painting, and Rubbings
- Record of Shaking the Flywhisk
- Record of Shen Zhou by Jin Nong
- Record of Shu Brocade
- Record of Talks on Art
- Record of the Archives of the General Administration of Jiaxing Route
- Record of The Auspicious Signs
- Record of the Campaigns of Holy warrior Chinggis Qan