A concept is a category under which specific elements may be grouped.e.g. a red ball, a red pencil, and a red chair are all instances of the simple concept “red”. An “even number” is defined as any integer（整数） that is divisible by two without a remainder, and that an “odd number” is one that is not evenly(均匀地） divisible by two

1 历史进程 2 预备知识 采用线性激活函数的神经元 采用阈值激活函数的神经元 采用 S 形激活函数的神经元 3 异或问题 4 多层感知机到底在做什么？ 5 Tilling（耕种，耕作）算法 6 可微激活函数函的多层感知机学习方法 误差 e 的表示 误差的反向传播 反向传播算法 计算例子

Combinatorial Logic Combinatorial Logic if – Outputs at a specified time are a function only of the inputs at that time e.g. decoders, multiplexers and adders Output change instantly when input change

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the factors that influence consumer behavior online. 2. Understand the decision-making process of consumer purchasing online. 3. Describe how companies are building one-to-one relationships with customers. 4. Explain how personalization is accomplished online. 5. Discuss the issues of e-loyalty and e-trust in EC. 6. Describe consumer market research in EC

1. abandon [ E5bAndEn ] 1)放弃, 遗弃(to give up completely)2)n.放任, 狂热 [搭配用法](writer, artist)abandon oneself to (grief, despair)=give way to ◼ He abandoned his wife and went away with all their money

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The BIOTOL team This series of books has been developed through a collaboration between the Open universiteit of the OPEN UNIVERSITEIT, THE NETHERLANDS Netherlands and University of Green wich (formerly Thames Polytechnic)to provide a whole Prof M C E. van Dam-Mieras library of advanced level fle rof w. H. de jeu exible learning Prof ]. de vries