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《Python网络数据采集》
说明: 《Python网络数据采集》
第一部分 创建爬虫
第1章 初见网络爬虫 2
1.1 网络连接 2
1.2 BeautifulSoup简介 4
1.2.1 安装BeautifulSoup 5
1.2.2 运行BeautifulSoup 7
1.2.3 可靠的网络连接 8
第2章 复杂HTML解析 11
2.1 不是一直都要用锤子 11
2.2 再端一碗BeautifulSoup 12
2.2.1 BeautifulSoup的find()和findAll() 13
2.2.2 其他BeautifulSoup对象 15
2.2.3 导航树 16
……(Python Network Data Acquisition)
- 2019-05-07 11:58:38下载
- 积分:1
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Python灰帽子-黑客与逆向工程师的Python编程之道
说明: 想学习黑客技术,进行逆向编程,同时提高编程技术的可以下载学习(Want to learn hacker technology, reverse programming, while improving the programming technology can be downloaded to learn)
- 2019-05-20 10:32:21下载
- 积分:1
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Installing_the_IMSL_Fortran_Windows
Installing the IMS Fortran windows
- 2010-03-05 03:40:17下载
- 积分:1
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FuzzyClusteringToolbox.pdf
说明: 这本书是关于模糊聚类方面的,希望对大家的研究有所帮助!(This book is about aspects of fuzzy clustering, and they hope to help you study!)
- 2008-10-27 17:23:44下载
- 积分:1
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16QAM_demodulate
本文对16QAM解调软信息输出(LLR)理论计算方法进行分析,推导
出其简化解调算法。将两者在性能和计算复杂度方面进行了分析比较,并分别在
高斯白噪声信道和瑞利衰落信道环境下进行仿真(In this paper, 16QAM demodulator soft information output (LLR) theoretical calculation method for the analysis derived simplified demodulation algorithm. Both in performance and computational complexity aspects are analyzed and compared, and in white Gaussian noise channel and Rayleigh fading channel simulation environment)
- 2009-01-05 11:01:01下载
- 积分:1
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AI-Programmers-Guide
Adobe Illustrator 开发指南,是学习图形插件体系的很有用的文档(Adobe Illustrator to develop guidelines for the study of graphics plug-in system very useful document)
- 2008-04-01 09:59:16下载
- 积分:1
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multiuser
本文针对并行干扰抵消检测器的不足之处,提出了改进的并行干扰抵消检测算法——基于多项式展开的并行干扰抵消多用户检测算法。该算法将多项式展开检测器作为并行干扰抵消检测器第一级的数据估计值,以提高检测可靠性。通过仿真实验,首先验证了多项式展开检测器的性能。然后比较改进算法与传统检测器的性能,验证改进算法的系统性能得到明显改善;并与并行干扰抵消检测器、解相关检测器和MMSE检测器相比较,验
证得到该改进算法的性能也有不同程度的改善。
(this paper discusses the principle and performance of the
conventional detector and the parallel interference cancellation(PIC)detector
separately.Since the conventional detector take MAI only as the background noise without considering the existence of the other users,the existence of MAI has a significant impact on the performance of CDMA systems.Each stage of PIC detector utilizes the data estimates of the initial or previous stage,produces a new set of MAI estimates,and then subtracts out all of the MAI for each user in parallel.Through Monte Carlo simulation in different scenarios,the results illustrate the influence of MAI in conventional CDMA ystems.Theexperimental results show PIC detector can effectively eliminate MAI andimprove the system BER.
)
- 2010-03-02 22:59:56下载
- 积分:1
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Numerical_method
数值计算方法 作者:陈忠 总页数:340
配有丰富习题(Numerical method Author: Chen)
- 2009-03-25 00:28:20下载
- 积分:1
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Signal_Integrity_Analysis
硕士/博士《论文高速电路信号完整性分析》,是nk格式论文,在中国知网上可以下载相应的阅读器。(Master' s/PhD " thesis high-speed circuit signal integrity analysis," is nk format paper, known in China, online you can download the appropriate reader.)
- 2009-12-31 17:57:22下载
- 积分:1
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hackbaseVIP_42
黑客基地VIP会员内部培训资料!
第42讲:零起点培训如何破解软件和制做注册机(Hackers VIP membership base within the training materials! 42 Lecture: Beginners training how to crack the software and making RI)
- 2010-06-29 11:11:12下载
- 积分:1