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posted @ 2020-04-18 13:42 tzc_wk 阅读(6309) 评论(72) 推荐(23)
摘要: Context-free language Context-free language: Given \(G\) as a CFG, the language of \(G\), denoted as \(\mathcal L(G)\), is the set of strings derivabl 阅读全文
posted @ 2025-12-16 14:22 tzc_wk 阅读(7) 评论(0) 推荐(0)
摘要: Lecture 1 data:由样本(sample)和标签(label)组成 模型:判别式模型(classification)和生成式模型(generation) 深度学习的前提假设:神经网络可以近似地表示任何函数、一个优秀的算法可以自动生成相应的神经网络。 单层感知机可以对与或非门进行仿真,但仿真 阅读全文
posted @ 2025-06-10 22:47 tzc_wk 阅读(95) 评论(0) 推荐(1)
摘要: Lecture 1 A probability space \(P=(U,p)\) consists of Universe \(U\): finite non-empty set Probability function \(p:U\to[0,1]\) such that \(\sum\limit 阅读全文
posted @ 2025-06-10 22:47 tzc_wk 阅读(113) 评论(0) 推荐(1)
摘要: Lecture 1 Chapter 1 Vectors: \(\vec{A}=(x,y,z)\). Operations on vectors: Addition \(\vec{A}+\vec{B}\) Scalar product \(c\vec{A}\) Dot product \(\vec{A 阅读全文
posted @ 2025-06-10 22:45 tzc_wk 阅读(111) 评论(0) 推荐(1)
摘要: Chapter 1 一个概率函数 \(P\) 是一个从全体事件集合 \(\Omega\) 到 \(\mathbb{R}\) 的映射,满足: \(\forall A\), \(\mathbb{P}(A)\ge 0\) \(\mathbb{P}(\Omega)=1\) 对任意两两不相交的事件集合 \(A 阅读全文
posted @ 2025-02-19 23:42 tzc_wk 阅读(131) 评论(0) 推荐(0)
摘要: Lecture 2 Supervised learning: regression, classification, ... Unsupervised learning: clustering, dimensionality reduction, ... The canonical machine 阅读全文
posted @ 2024-11-15 22:32 tzc_wk 阅读(348) 评论(2) 推荐(2)
摘要: 前提情要:博主写这篇博客仅仅是为了加深对知识点的印象,如果读者仅仅是为了了解抽代学习内容的话建议出门左拐魏老师的 https://www.cnblogs.com/alex-wei/p/18194469/Abstract_Algebra_Ring_Theory, 因为本博客在创作过程中很大程度上借鉴了 阅读全文
posted @ 2024-06-05 22:58 tzc_wk 阅读(1544) 评论(0) 推荐(1)
摘要: Ring Theory 4.8 Definition: A ring ​ is a set together with two binary operation together with "​" and "​", obeying: ​ is an Abelian group. ​ is assoc 阅读全文
posted @ 2024-05-27 16:14 tzc_wk 阅读(236) 评论(0) 推荐(0)
摘要: 谨以此文,悼念我炸裂的危寄分欸二期中考试。下次不仅要带一个脑子做题,还得带一个脑子盯着它做题,不然第一个脑子容易跑偏刹不住车。得去黑市看一眼最近脑子市价如何,如果太贵还得卖点东西凑一凑。 1. 群 1.1 群的定义 群,是一个由一个集合 \(G\) 和一种 \(G\) 上的二元运算 \(\times 阅读全文
posted @ 2024-04-21 10:52 tzc_wk 阅读(1198) 评论(0) 推荐(1)
摘要: Group Theory 2.26 Definition. A group is an ordered pair \((G,*)\), such that: Exists an identity \(e\), s.t. \(e*a=a*e=a\) for \(\forall a\in G\) \(\ 阅读全文
posted @ 2024-02-28 22:20 tzc_wk 阅读(384) 评论(2) 推荐(0)