【Hacker News搬运】应用数学规划

hackernews

Title: Applied Mathematical Programming

应用数学规划

Text:

Url: https://web.mit.edu/15.053/www/AMP.htm

很抱歉，作为一个AI，我无法直接访问外部链接或获取链接中的内容。不过，我可以指导你如何使用JinaReader来抓取和分析网页内容，以及如何处理非中文内容。

首先，你需要确保你已经安装了JinaReader和必要的库。以下是一个简单的例子，说明如何使用JinaReader来抓取网页内容，并对非中文内容进行翻译：

1. 安装JinaReader和其他依赖库（如果尚未安装）：
```bash
pip install jina
pip install beautifulsoup4
pip install requests
pip install langdetect
pip install googletrans==4.0.0-rc1  # 用于翻译的库

使用以下Python代码来抓取内容并进行处理：

import jina
from bs4 import BeautifulSoup
from langdetect import detect
from googletrans import Translator

# 创建Jina的文档处理器
class WebPageProcessor(jina.Processor):

    def __init__(self, translator=None):
        super().__init__()
        self.translator = translator or Translator()

    async def handle(self, request, *args, **kwargs):
        # 从请求中获取URL
        url = request.input
        # 使用requests获取网页内容
        response = requests.get(url)
        response.raise_for_status()
        html_content = response.text

        # 使用BeautifulSoup解析HTML
        soup = BeautifulSoup(html_content, 'html.parser')

        # 找到所有的段落
        paragraphs = soup.find_all('p')
        for p in paragraphs:
            # 检测文本的语言
            text = p.get_text()
            if detect(text) != 'zh':
                # 如果文本不是中文，则翻译
                translated_text = self.translator.translate(text, dest='zh-cn').text
                print(translated_text)
            else:
                print(text)

# 创建Jina的客户端
client = jina.Client()

# 添加我们的处理器
client.add_processor(WebPageProcessor())

# 提交任务
response = client.post('/process', inputs=['https://web.mit.edu/15.053/www/AMP.htm'])

# 打印结果
print(response)

这段代码会抓取指定的网页内容，然后使用BeautifulSoup解析HTML以找到所有的段落。对于每个段落，它使用langdetect库检测语言，如果不是中文，则使用googletrans库将其翻译成中文。

请注意，这段代码只是一个基本的示例，实际使用时可能需要根据具体情况进行调整。例如，你可能需要处理JavaScript渲染的内容，或者根据网页结构调整解析逻辑。此外，频繁使用翻译服务可能会受到API限制或产生费用。

        
## Post by: ibobev
        
### Comments: 
        
**npalli**: This is from 1977. I suppose it&#x27;s ok for fundamentals but you can probably do better going with a modern text like<p><pre><code>  Model Building in Mathematical Programming by H. Paul Williams (5th Edition)</code></pre>
> **npalli**: 这是1977年的。我想这是；基础知识没问题，但你可能会更好地使用现代文本，比如H.Paul Williams的《数学规划中的模型构建》（第5版）</code></pre>
            
**txnf**: convex optimization by boyd vandenberghe should be mentioned <a href="https:&#x2F;&#x2F;web.stanford.edu&#x2F;~boyd&#x2F;cvxbook&#x2F;" rel="nofollow">https:&#x2F;&#x2F;web.stanford.edu&#x2F;~boyd&#x2F;cvxbook&#x2F;</a>
> **txnf**: 应该提到boyd vandenberghe的凸优化<a href=“https:”webstanford.edu“~boyd”cvxbook“rel=”nofollow“>https:”&#x2F；web.stanford.edu~博伊德；cvxbook</一
            
**graycat**: &quot;Applied ...&quot;?<p>On the Optimization Ph.D. qualifying exam, got a &quot;High Pass&quot; and the best score in the class.<p>In optimization answered a question in the Kuhn-Tucker constraint qualifications and had the paper accepted quickly in <i>Mathematical Programming</i>.<p>Taught linear programming in a well-known business school for 5 years.<p>NYC had a few users, in a loose group, of linear programming but were not very good at it.  Somehow I stumbled into the group and was by far the best, but there was no chance of a career or job there.<p>Net, saw next to nothing in &quot;applied&quot;.  Believing &quot;applied&quot; would have been homeless living on the street, exactly, no exaggeration.<p>Was not able to help my wife -- she died.  Had two cats.  They got sick, needed medical care I couldn&#x27;t afford, and died.<p>Thousands of resume copies posted -- no meaningful responses.<p>The Sheriff showed up with several workers with guns, dumped all my clothes, furniture, music materials, e.g., piano, large professional library on the front -- I had to drive off with a few items.<p>At FedEx I saw a good application, got a memo from the Founder, COB, CEO to pursue it, pleased two crucial members of the BOD, saved FedEx twice, but one manager tried to fire me,
another said there was &quot;no money in the budget&quot; for me, the stock promised in 3 weeks was WAY late, and I&#x27;d been commuting between Memphis and Maryland.<p>Could have done better with a lawn mowing company, LITERALLY.<p>Actually, big picture:  Heavily long, likely still, the main US customer, apparently 99+%, for optimization of any kind was US national 
security.<p>I was manipulated, fooled, and very seriously hurt by the claim &quot;applied&quot;.<p>A fact of life:  Nearly always people with money, power, and optimization problems don&#x27;t understand optimization, fear and resent those who do, and choose just to avoid the subject.<p>So, no wife, no cats, starting a business, no boss, sole-solo founder, do have some original applied math deep in the technology, and face just US Internet startup reality.<p>Optimization?  Get a 2 hour overview and otherwise f&#x27;get about it.
> **graycat**: &“；已应用&“<p> 在优化博士资格考试中，获得了&quot；高通&quot；班上最好的成绩<p> 在优化中回答了Kuhn-Tucker约束条件中的一个问题，并使该论文在<i>数学规划</i>中迅速被接受<p> 在一所知名商学院教授线性规划5年<p> NYC在一个松散的群体中有一些线性规划的用户，但并不擅长。不知怎么的，我偶然进入了这个群体，是迄今为止最好的，但在那里没有职业或工作的机会<p> Net，在&quot；中几乎什么也看不见；适用&quot；。相信&quot；适用&quot；毫不夸张地说，他们本来会无家可归，流落街头<p> 我无法帮助我的妻子，她死了。有两只猫。他们生病了，需要我无法提供的医疗护理；买不起，死了<p> 张贴了数千份简历，但没有任何有意义的回复<p> 警长带着几个拿着枪的工人出现了，把我所有的衣服、家具、音乐材料，比如钢琴、前面的大型专业图书馆都扔掉了——我不得不带着一些东西开车离开<p> 在联邦快递，我看到了一份很好的申请，收到了创始人、COB、首席执行官的备忘录，让我继续努力，让董事会的两位关键成员感到高兴，两次救了联邦快递，但一位经理试图解雇我，另一位说有&quot；预算中没有钱&quot；对我来说，3周后承诺的股票已经晚了很多，我；我一直在孟菲斯和马里兰州之间通勤<p> 如果有一家草坪修剪公司LITERALLY，情况会更好<p> 实际上，总体而言：很长一段时间，很可能仍然是，美国的主要客户，显然99%以上，用于任何形式的优化，都是美国国民安全<p> 我被这种说法操纵、愚弄，并受到了非常严重的伤害&quot；适用&quot<p> 生活的一个事实：几乎总是有金钱、权力和优化问题的人不会；不了解优化，害怕和憎恨那些这样做的人，选择只是为了避开这个话题<p> 所以，没有妻子，没有猫，创业，没有老板，唯一的独立创始人，在技术中确实有一些原创的应用数学，并面对美国互联网创业的现实<p> 优化？获取2小时的概述，否则将无法获取；开始吧。
            
**6gvONxR4sf7o**: Has this been updated since 1977? Because the field and tools and even the view points have changed a ton.
> **6gvONxR4sf7o**: 这是自1977年以来更新的吗？因为场地和工具，甚至观点都发生了很大的变化。
            
**Abismith**: [dead]
> **Abismith**: [死了]