the first one i post here

这是作者首次在网络上发布的文章,主要探讨了创建一个符号的想法,虽然内容较为抽象,但展现了作者对于创意表达的兴趣。

Basically, it is my first "article" posted on Web.. don't know what i want to dot down..

like make a symbol.

7-364 Coconuts, Revisited 分数 10 作者 伍健全 单位 重庆科技大学 The short story titled Coconuts, by Ben Ames Williams, appeared in the Saturday Evening Post on October 9, 1926. The story tells about five men and a monkey who were shipwrecked on an island. They spent the first night gathering coconuts. During the night, one man woke up and decided to take his share of the coconuts. He divided them into five piles. One coconut was left over so he gave it to the monkey, then hid his share and went back to sheep. Soon a second man woke up and did the same thing. After dividing the coconuts into five piles, one coconut was left over which he gave to the monkey. He then hid his share and went back to bed. The third, fourth, and fifth man followed exactly the same procedure. The next morning, after they all woke up, they divided the remaining coconuts into five equal shares. This time no coconuts were left over. An obvious question is "how many coconuts did they originally gather?" There are an infinite number of answers, but the lowest of these is 3,121. But that's not our problem here. Suppose we turn the problem around. If we know the number of coconuts that were gathered, what is the maximum number of persons (and one monkey) that could have been shipwrecked if the same procedure could occur? 输入格式: The input will consist of a sequence of integers, each representing the number of coconuts gathered by a group of persons (and a monkey) that were shipwrecked. The sequence will be followed by a negative number. 输出格式: For each number of coconuts, determine the largest number of persons who could have participated in the procedure described above. Display the results similar to the manner shown below, in the Expected Output. There may be no solution for some of the input cases; if so, state that observation. 输入样例: 在这里给出一组输入。例如: 25 30 3121 -1 输出样例: 在这里给出相应的输出。例如: 25 coconuts, 3 persons and 1 monkey 30 coconuts, no solution 3121 coconuts, 5 persons and 1 monkey 代码长度限制 16 KB 时间限制 400 ms 内存限制 64 MB 栈限制 8192 KB C (gcc) 1 c语言
11-14
根据原作 https://pan.quark.cn/s/459657bcfd45 的源码改编 Classic-ML-Methods-Algo 引言 建立这个项目,是为了梳理和总结传统机器学习(Machine Learning)方法(methods)或者算法(algo),和各位同仁相互学习交流. 现在的深度学习本质上来自于传统的神经网络模型,很大程度上是传统机器学习的延续,同时也在不少时候需要结合传统方法来实现. 任何机器学习方法基本的流程结构都是通用的;使用的评价方法也基本通用;使用的一些数学知识也是通用的. 本文在梳理传统机器学习方法算法的同时也会顺便补充这些流程,数学上的知识以供参考. 机器学习 机器学习是人工智能(Artificial Intelligence)的一个分支,也是实现人工智能最重要的手段.区别于传统的基于规则(rule-based)的算法,机器学习可以从数据中获取知识,从而实现规定的任务[Ian Goodfellow and Yoshua Bengio and Aaron Courville的Deep Learning].这些知识可以分为四种: 总结(summarization) 预测(prediction) 估计(estimation) 假想验证(hypothesis testing) 机器学习主要关心的是预测[Varian在Big Data : New Tricks for Econometrics],预测的可以是连续性的输出变量,分类,聚类或者物品之间的有趣关联. 机器学习分类 根据数据配置(setting,是否有标签,可以是连续的也可以是离散的)和任务目标,我们可以将机器学习方法分为四种: 无监督(unsupervised) 训练数据没有给定...
### SystemVerilog Assertion Post Condition Usage In SystemVerilog Assertions (SVA), post conditions play an important role in defining temporal properties where certain conditions must hold true after another event occurs. The syntax and semantics ensure that specific sequences or expressions follow other events based on defined criteria. A typical use case involves checking whether a particular state exists following a trigger condition. For instance: ```systemverilog property p_post; @(posedge clk) disable iff (!reset_n) req |-> ##1 ack; // 'ack' should occur one cycle after 'req' endproperty ``` The `|->` operator specifies that the right-hand side expression (`##1 ack`) shall be evaluated starting at the first time step when the left-hand side becomes true (`req`). Here, `##1` indicates exactly one clock cycle delay between `req` being asserted and expecting to see `ack`. For more complex scenarios involving multiple cycles or varying delays, additional operators like `$`, `[->n]`, etc., provide flexibility in specifying timing relationships[^1]. When incorporating these constructs into assertions, care must be taken regarding placement rules within the design codebase. Specifically, invoking properties directly inside assert statements requires adherence to strict formatting guidelines to avoid compilation errors such as those mentioned earlier about improper clock definitions[^2]: ```systemverilog // Correct way to define and call SVA with clocks outside of the property body. logic clk; assert property ( @(posedge clk) p_post ); ``` Additionally, leveraging macros can simplify repetitive patterns found across various parts of verification environments by abstracting common logic through parameterized templates[^3]. However, this approach does require careful consideration during implementation phases due to potential issues related to scope resolution and macro expansion order. To deepen understanding beyond basic concepts presented here, consulting comprehensive resources dedicated specifically towards advanced topics might prove beneficial[^4].
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