1. 在 PC 机上使用 C 语言，若有如下定义： struct data { int i; char ch; float f; }a; 则结构变量 a 占用内存的字节数是

数据(Data) 数据是描述现实世界事物的符号记录，是用物理符号记录的可以鉴别的信息。包 括文字、图形、声音等，他们都是用来描述事物特性的

1.原理：在控制信号作用下，从多个输入中每次选中一个输出。因此又称多路开关(Multiplexer－MUX)。是计算机系统中使用最多的一类中规模器件

数据仓库(data warehouse)是一个面向主 题的(subject oriented)、集成的 (integrated)、非易失的(non-volatile)、 随时间变化的(time variant)数据集合，用于支持管理决策

I. The concentration-profits hypothesis, 294.-II. Industry definition neasure of concentration, and selection of sample, 297.--III. Character and tions of profit data, 305 -IV. Calculation of accounting profit rates, 310 -V. Association of industry profit rates and concentration, 311.-VI. Asso-

一、决策问题的表格表示——损失矩阵 对无观察(No-data)问题 a=δ 可用表格(损失矩阵)替代决策树来描述决策问题的后果(损失):

Definition of search Static search table Dynamic search table Hash table

G( V, E ) where G ::= graph, V = V( G ) ::= finite nonempty set of vertices, and E = E( G ) ::= finite set of edges

A stack is a Last-In-First-Out (LIFO) list, that is, an ordered list in which insertions and deletions are made at the top only. Objects: A finite ordered list with zero or more elements

【Definition】An algorithm is a finite set of instructions that, if followed, accomplishes a particular task. In addition, all algorithms must satisfy the following criteria: (1) Input There are zero or more quantities that are externally supplied