机器学习算法第二版 这是Packt发布的《 的代码库。 流行于数据科学和机器学习的算法 这本书是关于什么的？ 机器学习以其强大而快速的大型数据集预测而获得了极大的普及。 但是，强大功能背后的真正力量是涉及大量统计分析的复杂算法，该算法搅动大型数据集并产生实质性见解。 本书涵盖以下激动人心的功能： 研究特征选择和特征工程过程 评估性能和误差权衡以进行线性回归 建立数据模型并使用不同类型的算法了解其工作方式 学习调整支持向量机（SVM）的参数 探索自然语言处理（NLP）和推荐系统的概念 如果您觉得这本书适合您，请立即获取！ 说明和导航 所有代码都组织在文件夹中。 例如，Chapter02。 该代码将如下所示： from sklearn.svm import SVC from sklearn.model_selection import cross_val_score svc =

《数据结构与算法C++版》(Data Structures and Algorithms in C++ Second Edition Adam Drozdek)第2版

Beyond BIOS第二版，出版于2010年11月。适用于UEFI bios初学者，也适用于从事相关开发工作的人员。希望对大家有帮助。

The Design of CMOS Radio-Frequency Integrated Circuits, Second Edition

Introduction This book describes the TCP/IP protocol suite, but from a different perspective than other texts on TCP/IP. Instead of just describing the protocols and what they do, we'll use a popular diagnostic tool to watch the protocols in action. Seeing how the protocols operate in varying circumstances provides a greater understanding of how they work and why certain design decisions were made. It also provides a look into the implementation of the protocols, without having to wade through thousands of lines of source code. When networking protocols were being developed in the 1960s through the 1980s, expensive, dedicated hardware was required to see the packets going "across the wire." Extreme familiarity with the protocols was also required to comprehend the packets displayed by the hardware. Functionality of the hardware analyzers was limited to that built in by the hardware designers. Today this has changed dramatically with the ability of the ubiquitous workstation to monitor a local area network Mogul 1990. Just attach a workstation to your network, run some publicly available software (described in Appendix A), and watch what goes by on the wire. While many people consider this a tool to be used for diagnosing network problems, it is also a powerful tool for understanding how the network protocols operate, which is the goal of this book. This book is intended for anyone wishing to understand how the TCP/IP protocols operate: programmers writing network applications, system administrators responsible for maintaining computer systems and networks utilizing TCP/IP, and users who deal with TCP/IP applications on a daily basis. Organization of the Book We take a bottom-up approach to the TCP/IP protocol suite. After providing a basic introduction to TCP/IP in Chapter 1, we will start at the link layer in Chapter 2 and work our way up the protocol stack. This provides the required background for later chapters for readers who aren't familiar with TCP/IP or networking in general. This book also uses a functional approach instead of following a strict bottom-to-top order. For example, Chapter 3 describes the IP layer and the IP header. But there are numerous fields in the IP header that are best described in the context of an application that uses or is affected by a particular field. Fragmentation, for example, is best understood in terms of UDP (Chapter 11), the protocol often affected by it. The time-to-live field is fully described when we look at the Traceroute program in Chapter 8, because this field is the basis for the operation of the program. Similarly, many features of ICMP are described in the later chapters, in terms of how a particular ICMP message is used by a protocol or an application. We also don't want to save all the good stuff until the end, so we describe TCP/IP applications as soon as we have the foundation to understand them. Ping and Traceroute are described after IP and ICMP have been discussed. The applications built on UDP (multicasting, the DNS, TFTP, and BOOTP) are described after UDP has been examined. The TCP applications, however, along with network management, must be saved until the end, after we've thoroughly described TCP. This text focuses on how these applications use the TCP/IP protocols. We do not provide all the details on running these applications. Readers This book is self-contained and assumes no specific knowledge of networking or TCP/IP. Numerous references are provided for readers interested in additional details on specific topics. This book can be used in many ways. It can be used as a self-study reference and covered from start to finish by someone interested in all the details on the TCP/IP protocol suite. Readers with some TCP/IP background might want to skip ahead and start with Chapter 7, and then focus on the specific chapters in which they're interested. Exercises are provided at the end of the chapters, and most solutions are in Appendix D. This is to maximize the usefulness of the text as a self-study reference. When used as part of a one- or two-semester course in computer networking, the focus should be on IP (Chapters 3 and 9), UDP (Chapter 11), and TCP (Chapters 17-24), along with some of the application chapters. Many forward and backward references are provided throughout the text, along with a thorough index, to allow individual chapters to be studied by themselves. A list of all the acronyms used throughout the text, along with the compound term for the acronym, appears on the inside back covers. If you have access to a network you are encouraged to obtain the software used in this book (Appendix F) and experiment on your own. Hands-on experimentation with the protocols will provide the greatest knowledge (and make it more fun). Systems Used for Testing Every example in the book was run on an actual network and the resulting output saved in a file for inclusion in the text. Figure 1.11 (p. 18) shows a diagram of the different hosts, routers, and networks that are used. (This figure is also duplicated on the inside front cover for easy reference while reading the book.) This collection of networks is simple enough that the topology doesn't confuse the examples, and with four systems acting as routers, we can see the error messages generated by routers. Most of the systems have a name that indicates the type of software being used: bsdi, svr4, sun, solaris, aix, slip, and so on. In this way we can identify the type of software that we're dealing with by looking at the system name in the printed output. A wide range of different operating systems and TCP/IP implementations are used: BSD/386 Version 1.0 from Berkeley Software Design, Inc., on the hosts named bsdi and slip. This system is derived from the BSD Networking Software, Release 2.0. (We show the lineage of the various BSD releases in Figure 1.10 on p. 17.) Unix System V/386 Release 4.0 Version 2.0 from U.H. Corporation, on the host named svr4. This is vanilla SVR4 and contains the standard implementation of TCP/IP from Lachman Associates used with most versions of SVR4. SunOS 4.1.3 from Sun Microsystems, on the host named sun. The SunOS 4.1.x systems are probably the most widely used TCP/IP implementations. The TCP/IP code is derived from 4.2BSD and 4.3BSD. Solaris 2.2 from Sun Microsystems, on the host named solaris. The Solaris 2.x systems have a different implementation of TCP/IP from the earlier SunOS 4.1.x systems, and from SVR4. (This operating system is really SunOS 5.2, but is commonly called Solaris 2.2.) AIX 3.2.2 from IBM on the host named aix. The TCP/IP implementation is based on the 4.3BSD Reno release. 4.4BSD from the Computer Systems Research Group at the University of California at Berkeley, on the host vangogh.cs.berkeley.edu. This system has the latest release of TCP/IP from Berkeley. (This system isn't shown in the figure on the inside front cover, but is reachable across the Internet.) Although these are all Unix systems, TCP/IP is operating system independent, and is available on almost every popular non-Unix system. Most of this text also applies to these non-Unix implementations, although some programs (such as Traceroute) may not be provided on all systems. Typographical Conventions When we display interactive input and output we'll show our typed input in a bold font, and the computer output like this. Comments are added in italics. Also, we always include the name of the system as part of the shell prompt (bsdi in this example) to show on which host the command was run. Throughout the text we'll use indented, parenthetical notes such as this to describe historical points or implementation details. We sometimes refer to the complete description of a command in the Unix manual as in ifconfig(8). This notation, the name of the command followed by a number in parentheses, is the normal way of referring to Unix commands. The number in parentheses is the section number in the Unix manual of the "manual page" for the command, where additional information can be located. Unfortunately not all Unix systems organize their manuals the same, with regard to the section numbers used for various groupings of commands. We'll use the BSD-style section numbers (which is the same for BSD-derived systems such as SunOS 4.1.3), but your manuals may be organized differently. Acknowledgments Although the author's name is the only one to appear on the cover, the combined effort of many people is required to produce a quality text book. First and foremost is the author's family, who put up with the long and weird hours that go into writing a book. Thank you once again, Sally, Bill, Ellen, and David. The consulting editor, Brian Kernighan, is undoubtedly the best in the busin...

Pandas is a popular Python package used for practical, real-world data analysis. It provides efficient, fast, and high-performance data structures that make data exploration and analysis very easy. This learner's guide will help you through a comprehensive set of features provided by the pandas library to perform efficient data manipulation and analysis.

INTRODUCTION TO EMBEDDED SYSTEMS A CYBER-PHYSICAL SYSTEMS APPROACH Second Edition

QOS‐ENABLED NETWORKS TOOLS AND FOUNDATIONS Second Edition一本很好的讲QOS的书，英文的哟

本书是移动通信领域的导论，主要讨论数字数据传输。适用于选修计算机网络或通信课程的电子工程或计算机专业的学生。本书从计算机科学的角度涵盖移动通信的各个方面，还指出了不同技术解决方案的共同属性，并阐明众所周知的从固定网络到支持终端移动性和无线接入网络的各种业务和应用的集成。. 本书主要内容有：移动和无线通信概述；通信系统信号的传播、复用和调制；通信介质接入方案；全球移动通信系统（GSM）、无绳电话技术、集群通信以及通用移动电信系统（UMTS）未来的发展；卫星系统；数字广播系统；被看做建筑物中线缆替代者的无线局域网，其中包括IEEE 802.11、高性能局域网和蓝牙技术；异步传输模式（ATM）向无线领域的扩展；移动Internet协议在无线领域的扩展，Ad hoc网和它们对路由选择协议的特殊要求也包括在内；将目前熟知的传输控制协议（TCP）应用于有特殊需求的无线领域的几种方法；新的无线应用协议（WAP）标准。

Dusty Phillips，Unleash the power of Python 3 objects.