Assignments · Remember: Problem set#1: Rules and Scheme due today September 15th, 2003 Reading Solving problems by searching: AIMA Ch 3 Homework for this lecture Problem set #2 due Monday, Sept. 22 Snas witha, Spring 03 Outline

Individuals are the objects described by a set of data. Individuals may be people, but they may also be animals Relationship or things Between Variables A variable is any characteristic of an individual. a variable can take different values for different ndividuals The 1997 survey data set, for example, includes data about a sample of women The individuals described are the women

ral questions that might arise concerning personal identity. When we ask\Who am I? we might be being we are, what our possiblities are, under what conditions\I\would continue to exist. We'll begin our discussionon n wonder what\makes us tick\, what we ultimately value, what matters to us. We might also be asking what sort personal identity with the latter set of questions Consider a parallel set of questions (Id) Under what conditions are baseball-events events in the same game? E. g, under what conditions are a

Problem Set 10 Solutions Due: Monday, May 2 at 9 PM Problem 1. Justify your answers to the following questions about independence. (a)Suppose that you roll a fair die that has six sides, numbered 1, 2, ... 6. Is the event that the number on top is a multiple of independent of the event that the number on top is a multiple of 3?

Problem Set 9 Solutions Due: Monday, April 25 at 9 PM Problem 1. There are three coins: a penny, nickel, and a quarter. When these coins are flipped: The penny comes up heads with probability 1/3 and tails with probability 2/3 The nickel comes up heads with probability 3/4 and tails with probability 1/4. The quarter comes up heads with

Srini Devadas and Eric Lehman Problem Set 7 Solutions Due: Monday, April 4 at 9 PM Problem 1. Every function has some subset of these properties: injective

Problem Set 4 Solutions Due: Monday, February 28 at 9 PM Problem 1. Prove all of the following statements except for the two that are false; for those, provide counterexamples. Assumen 1. When proving each statement, you may assume all its predecessors (a)a =(mod n) Solution. Every number divides zero, so n (a-a), which means a a (mod n). (b)a≡b(modn) impliesa(modn)

Problem set 3 Solutions Due: Tuesday, February 22 at 9 PM Problem 1. An urn contains 75 white balls and 150 black balls. while there are at least 2 balls remaining in the urn, you repeat the following operation. You remove 2 balls elected arbitrarily and then: If at least one of the two balls is black, then you discard one black ball and put the other ball back in the urn

Problem set 2 Solutions Due: Monday, February 14 at 9 PM Problem 1. Use induction to prove that n/n for alln olution. The proof is by induction on n. Let P(n) be the proposition that the equation Base case. P(2 )is true because Inductive step. Assume P(n)is true. Then we can prove P(n +1)is also true as follows

10.1 OSI安全体系结构 • 安全攻击，安全服务，安全机制 10.2 IPSec协议 • IPSec体系结构，IPSec工作模式，AH协议 10.3 SSL/TLS协议 • SSL体系结构，SSL记录协议，SSL修改密码规范协议， • SSL报警协议，SSL握手协议，TLS协议 10.4 安全电子交易 • SET的需求，SET系统构成，双向签名，支付处理