https://echo.ishian.me/categories/se-courses/Recent content in SE Courses on IshianHugoenWed, 03 Dec 2025 00:00:00 +0000https://echo.ishian.me/2025/12/03/compilers-syntax/Wed, 03 Dec 2025 00:00:00 +0000https://echo.ishian.me/2025/12/03/compilers-syntax/讲解文法分类、上下文无关文法、二义性与左递归消除及语法分析方法https://echo.ishian.me/2025/12/02/compilers-lexical/Tue, 02 Dec 2025 00:00:00 +0000https://echo.ishian.me/2025/12/02/compilers-lexical/介绍编译过程概览与词法分析，包括正则表达式、NFA与DFA自动机https://echo.ishian.me/2025/11/28/stat-unsupervise-learning/Fri, 28 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/28/stat-unsupervise-learning/介绍无监督学习方法：主成分分析降维及K均值与系统聚类https://echo.ishian.me/2025/11/27/stat-svm/Thu, 27 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/27/stat-svm/讲解支持向量机的最大间隔分类器、软间隔与核函数原理https://echo.ishian.me/2025/11/25/stat-tree-models/Tue, 25 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/25/stat-tree-models/介绍回归树与分类树的建树剪枝方法及装袋、随机森林、提升等集成模型https://echo.ishian.me/2025/11/24/stat-nlinear-models/Mon, 24 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/24/stat-nlinear-models/介绍非线性回归方法：多项式回归、回归样条、光滑样条与GAMhttps://echo.ishian.me/2025/11/20/stat-estimate/Thu, 20 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/20/stat-estimate/讲解测试误差的估计方法：交叉验证、留一法与自助法及自举推断https://echo.ishian.me/2025/11/20/stat-var-selection/Thu, 20 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/20/stat-var-selection/讲解变量选择方法：子集选择、逐步回归及Lasso与Ridge压缩估计https://echo.ishian.me/2025/11/18/stat-classification/Tue, 18 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/18/stat-classification/整理统计学习分类方法：逻辑回归、判别分析与K近邻等分类模型https://echo.ishian.me/2025/11/17/stat-linear-regression/Mon, 17 Nov 2025 00:00:00 +0000https://echo.ishian.me/2025/11/17/stat-linear-regression/讲解简单与多元线性回归的最小二乘估计、显著性检验及模型评价指标https://echo.ishian.me/2025/08/20/linux-kernel/Wed, 20 Aug 2025 00:00:00 +0000https://echo.ishian.me/2025/08/20/linux-kernel/介绍 Linux 内核的系统内存管理、软件程序管理等核心功能https://echo.ishian.me/2025/06/18/db-review/Wed, 18 Jun 2025 00:00:00 +0000https://echo.ishian.me/2025/06/18/db-review/数据库课程期末复习笔记，涵盖三级模式、SQL、范式、事务与并发控制等知识点https://echo.ishian.me/2025/06/11/os-review/Wed, 11 Jun 2025 00:00:00 +0000https://echo.ishian.me/2025/06/11/os-review/操作系统期末复习提纲，梳理启动流程、进程内存文件设备管理与同步等核心考点https://echo.ishian.me/2025/06/10/os-filesystem/Tue, 10 Jun 2025 00:00:00 +0000https://echo.ishian.me/2025/06/10/os-filesystem/介绍操作系统文件的结构、访问模式、目录结构与文件系统设计https://echo.ishian.me/2025/06/03/os-memory/Tue, 03 Jun 2025 00:00:00 +0000https://echo.ishian.me/2025/06/03/os-memory/整理操作系统内存管理：地址绑定、连续分配与页式、段式、段页式管理及虚存保护https://echo.ishian.me/2025/05/05/probability-rdnvar/Mon, 05 May 2025 00:00:00 +0000https://echo.ishian.me/2025/05/05/probability-rdnvar/汇总常见离散与连续随机变量的分布、期望与方差推导及高阶矩结论https://echo.ishian.me/2025/05/03/comp-networking-datalinklayer/Sat, 03 May 2025 00:00:00 +0000https://echo.ishian.me/2025/05/03/comp-networking-datalinklayer/讲解数据链路层的成帧、差错检测、MAC协议及CSMA/CD、CSMA/CA等多路访问控制机制https://echo.ishian.me/2025/05/01/comp-networking-trsflayer/Thu, 01 May 2025 00:00:00 +0000https://echo.ishian.me/2025/05/01/comp-networking-trsflayer/讲解可靠数据传输原理、停等/GBN/SR协议及TCP报文格式、连接管理与拥塞控制https://echo.ishian.me/2025/05/01/comp-networking-iplayer/Thu, 01 May 2025 00:00:00 +0000https://echo.ishian.me/2025/05/01/comp-networking-iplayer/讲解网络层功能、IPv4地址分类与报文格式、IP分片及NAT、DHCP等协议https://echo.ishian.me/2025/04/20/comp-networking-applayer/Sun, 20 Apr 2025 00:00:00 +0000https://echo.ishian.me/2025/04/20/comp-networking-applayer/介绍应用层体系结构及HTTP等应用层协议的原理与报文格式https://echo.ishian.me/2025/04/18/comp-networking-profile/Fri, 18 Apr 2025 00:00:00 +0000https://echo.ishian.me/2025/04/18/comp-networking-profile/介绍计算机网络的性能指标、时延与丢包概念及OSI、TCP/IP分层体系结构https://echo.ishian.me/2025/04/03/os-process/Thu, 03 Apr 2025 00:00:00 +0000https://echo.ishian.me/2025/04/03/os-process/整理操作系统进程管理：进程组成与PCB、进程状态转换、调度、同步与通信机制https://echo.ishian.me/2025/02/10/os-structure/Mon, 10 Feb 2025 00:00:00 +0000https://echo.ishian.me/2025/02/10/os-structure/介绍操作系统的本质、内核层次划分、功能模块与系统调用等基本概念https://echo.ishian.me/2025/01/11/linux-infos/Sat, 11 Jan 2025 00:00:00 +0000https://echo.ishian.me/2025/01/11/linux-infos/介绍使用 Bash 命令监控进程、磁盘空间等系统信息的方法https://echo.ishian.me/2024/12/06/coa-arithmetic-operations/Fri, 06 Dec 2024 00:00:00 +0000https://echo.ishian.me/2024/12/06/coa-arithmetic-operations/讲解计算机中数据的表示与存储、定点数原反补码及加减乘除运算的实现https://echo.ishian.me/2024/11/15/physics-quantum/Fri, 15 Nov 2024 00:00:00 +0000https://echo.ishian.me/2024/11/15/physics-quantum/整理量子物理：黑体辐射、光电效应、物质波与薛定谔方程等基础概念https://echo.ishian.me/2024/11/01/concretemath-special-coefficient/Fri, 01 Nov 2024 00:00:00 +0000https://echo.ishian.me/2024/11/01/concretemath-special-coefficient/讲解二项式系数的性质、母函数运算及第二类斯特林数等特殊系数https://echo.ishian.me/2024/10/19/physics-relativity/Sat, 19 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/19/physics-relativity/整理狭义相对论：洛伦兹变换、时空观修正与相对论力学的基本结论https://echo.ishian.me/2024/10/16/concretemath-rounding/Wed, 16 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/16/concretemath-rounding/讲解上下取整函数的性质、区间整数计数、谱系划分及均分分组等应用https://echo.ishian.me/2024/10/14/physics-elec-induction/Mon, 14 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/14/physics-elec-induction/整理电磁感应：法拉第定律、动生与感生电动势、自感互感及磁场能量https://echo.ishian.me/2024/10/11/physics-magnetic-field/Fri, 11 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/11/physics-magnetic-field/整理恒定磁场：毕奥-萨伐尔定律、安培环路定理及洛伦兹力与霍尔效应https://echo.ishian.me/2024/10/06/physics-electrostatic-field/Sun, 06 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/06/physics-electrostatic-field/整理静电场：库仑定律、电场强度、高斯定理、电势及导体与电介质https://echo.ishian.me/2024/10/03/physics-classic-force/Thu, 03 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/03/physics-classic-force/整理经典力学：质点运动描述、牛顿定律、参考系与伽利略变换及守恒定律https://echo.ishian.me/2024/10/02/concretemath-summation/Wed, 02 Oct 2024 00:00:00 +0000https://echo.ishian.me/2024/10/02/concretemath-summation/讲解和式的表示方法与清单法、求和因子法、扰动法等求和技巧及多重和式https://echo.ishian.me/2024/09/27/discretemath-abstract-algebra/Fri, 27 Sep 2024 00:00:00 +0000https://echo.ishian.me/2024/09/27/discretemath-abstract-algebra/讲解半群、群、子群、循环群及环、域等近世代数结构的定义与性质https://echo.ishian.me/2024/09/21/concretemath-recursion/Sat, 21 Sep 2024 00:00:00 +0000https://echo.ishian.me/2024/09/21/concretemath-recursion/讲解递归函数与数学归纳法，分析汉诺塔、直线划分平面等经典递归问题https://echo.ishian.me/2024/08/07/discretemath-algebra-system/Wed, 07 Aug 2024 00:00:00 +0000https://echo.ishian.me/2024/08/07/discretemath-algebra-system/讲解代数系统的定义、二元运算的性质及幺元、零元、逆元等特殊元素https://echo.ishian.me/2024/05/31/linearalgebra-rank/Fri, 31 May 2024 00:00:00 +0000https://echo.ishian.me/2024/05/31/linearalgebra-rank/介绍矩阵秩的性质及其在向量组与线性方程组中的应用https://echo.ishian.me/2024/05/20/linearalgebra-analytic-geometry/Mon, 20 May 2024 00:00:00 +0000https://echo.ishian.me/2024/05/20/linearalgebra-analytic-geometry/介绍向量的线性表示与运算、平面/空间直线方程及二次曲面https://echo.ishian.me/2024/05/14/linearalgebra-determinant/Tue, 14 May 2024 00:00:00 +0000https://echo.ishian.me/2024/05/14/linearalgebra-determinant/介绍行列式的结论与特殊行列式、消零等运算技巧https://echo.ishian.me/2024/05/11/linearalgebra-matrix/Sat, 11 May 2024 00:00:00 +0000https://echo.ishian.me/2024/05/11/linearalgebra-matrix/介绍矩阵的概念、运算、转置、分块与初等变换https://echo.ishian.me/2024/05/04/analog-circuit/Sat, 04 May 2024 00:00:00 +0000https://echo.ishian.me/2024/05/04/analog-circuit/整理模拟电路基础，涵盖电路分析方法、二极管三极管及放大电路等元件特性https://echo.ishian.me/2024/04/29/discretemath-graph/Mon, 29 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/29/discretemath-graph/讲解图的基本概念、度数、路径回路、连通性及欧拉图与哈密尔顿图等图论基础https://echo.ishian.me/2024/04/23/calculus-multivar-diff/Tue, 23 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/23/calculus-multivar-diff/讲解多元函数的二重极限、连续性、偏导与全微分及其应用https://echo.ishian.me/2024/04/22/discretemath-set/Mon, 22 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/22/discretemath-set/讲解集合的基本概念、运算、笛卡尔积、关系与函数等集合论知识https://echo.ishian.me/2024/04/20/calculus-diff-equation/Sat, 20 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/20/calculus-diff-equation/讲解常微分方程的基本概念与分离变量法等初等解法，并附例题https://echo.ishian.me/2024/04/19/discretemath-mathamatic-logic/Fri, 19 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/19/discretemath-mathamatic-logic/讲解命题逻辑与谓词逻辑的基本概念、等价公式及推理规则https://echo.ishian.me/2024/04/17/calculus-series-exercise/Wed, 17 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/17/calculus-series-exercise/整理常数项级数敛散性判别与幂级数求和的解题思路和常用结论https://echo.ishian.me/2024/04/14/calculus-series/Sun, 14 Apr 2024 00:00:00 +0000https://echo.ishian.me/2024/04/14/calculus-series/讲解常数项级数的敛散性、常见级数、性质及幂级数的相关概念https://echo.ishian.me/2024/03/12/linux-file/Tue, 12 Mar 2024 00:00:00 +0000https://echo.ishian.me/2024/03/12/linux-file/介绍 Linux 文件系统、文件权限、链接与常用 Bash 文件命令https://echo.ishian.me/2023/12/11/calculus-exercise-1/Mon, 11 Dec 2023 00:00:00 +0000https://echo.ishian.me/2023/12/11/calculus-exercise-1/微积分极限与积分的计算练习题集，附详细求解过程https://echo.ishian.me/2023/12/03/calculus-improper-int/Sun, 03 Dec 2023 00:00:00 +0000https://echo.ishian.me/2023/12/03/calculus-improper-int/讲解无穷区间与无界函数两类反常积分的计算方法及敛散性判断https://echo.ishian.me/2023/11/28/calculus-definite-int/Tue, 28 Nov 2023 00:00:00 +0000https://echo.ishian.me/2023/11/28/calculus-definite-int/整理定积分的定义、可积条件、性质与积分中值定理https://echo.ishian.me/2023/11/12/calculus-indefinite-int/Sun, 12 Nov 2023 00:00:00 +0000https://echo.ishian.me/2023/11/12/calculus-indefinite-int/整理不定积分的基本公式、拓展公式、凑微分与换元等积分方法https://echo.ishian.me/2023/11/05/calculus-limit-exercise/Sun, 05 Nov 2023 00:00:00 +0000https://echo.ishian.me/2023/11/05/calculus-limit-exercise/极限练习题集，讲解数列极限存在性证明与极限不存在的判定方法https://echo.ishian.me/2023/10/30/calculus-limitation/Mon, 30 Oct 2023 00:00:00 +0000https://echo.ishian.me/2023/10/30/calculus-limitation/整理极限求解的注意事项与常见题型，包括单调有界收敛定理与反函数求法