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news humor found to sovle problems
news humor found to sovle problems

Humor Found to Aid Problem-Solving

By DANIEL GOLEMAN

Published: August 4, 1987

LEAD:

''IN America, everything is permitted that's not forbidden,'' a European joke has it.

''In Germany, everything is forbidden that's not permitted. In France, everything is permitted, even if it's forbidden. And in Russia, everything is forbidden, even if it's permitted.''

Such jokes suit the notion that much humor veils aggression, permitting the joke-teller, in Freud's words, ''to be malicious with dignity.'' But Freud's longstanding analysis of humor as the release of repressed feelings is receding as a growing group of social scientists, for whom humor is no joke, make it the focus of serious research. In the new work, humor is seen less as disguised hostility and more as a stimulant to problem-solving and productivity, as an aid to education and as the stuff of social bonds.

Humor and its uses have been a subject of conjecture since Aristotle, and a large body of psychoanalytic literature deals with jokes. But ''humor has been a neglected topic among researchers,''

said Donna Cooper, a psychologist at the University of Connecticut who is a consultant on the uses of humor in organizations. ''Most psychologists are preoccupied with grim topics and problems; humor and the positive emotions get little interest or funding.''

Of late, though, that has begun to change. Some of the more visible new research, inspired by Norman Cousins' account of how watching Marx Brothers movies and other comedy films helped him recover from a debilitating illness, deals with links between positive feelings and healing.

Less well known is recent research suggesting that putting people in a good mood by telling them jokes makes them think through problems with more ingenuity. Casual joking at work may thus improve people's effectiveness in their tasks.

''Any joke that makes you feel good is likely to help you think more broadly and creatively,'' said Alice M. Isen, a psychologist at the University of Maryland in Baltimore. The elation that comes from hearing a good joke, Dr. Isen has found, is similar to that which people feel when they receive a small, unexpected gift. Such elation, her research shows, facilitates innovation.

In the research, reported in a recent issue of The Journal of Personality and Social Psychology, Dr. Isen found that people who had just watched a short comedy film of television ''bloopers'' were better able to find a creative solution to a puzzling problem than were people who had watched a film about math or who had exercised.

The problem posed was one frequently used in such research: People were given a candle, matches and a box of tacks and asked to attach the candle to a corkboard wall so that the candle would burn without dripping wax on the floor.

Most people who try to solve this problem fall prey to ''functional fixedness,'' the tendency to see the objects presented them only in terms of their conventional uses. Those who were in a good mood from watching the funny film, however, were generally able to solve the problem by seeing another use for the box holding the tacks: They tacked the box to the wall and used it as a candleholder.

In other studies, Dr. Isen found that the comedy film increased people's ability to think more broadly, seeing relationships that otherwise eluded them. This is a mental skill that is important in finding creative solutions to problems and in foreseeing the

consequences of a given decision. The ability to recognize complex relationships and far-flung implications has also been found, in other research, to mark the most successful business executives.

''The mind associates more broadly when people are feeling good after hearing a joke,'' said Dr. Isen. ''They think of things they ordinarily would not and have access to a broader range of mental material. And the more ideas present in your mind, the more ways you see to connect things; you're able to see more solutions.'' Beyond Satisfaction

In light of this and other research, joking at work is being appreciated as more than mere diversion. Research to be reported next month at the annual meeting of the American Psychological Association shows that the feeling of having fun at work is more important than overall job satisfaction in workers' effectiveness.

By DANIEL GOLEMAN

Published: August 4, 1987

In a survey of 382 people from a wide variety of work places, David Abramis, a psychologist in the School of Business Administration at California State University at Long Beach, found that those who felt their work was fun performed better and got along better with

co-workers than did those who were satisfied with their jobs but did not see them as fun.

Traditionally, psychologists have focused on people's sense of satisfaction with their jobs as a measure of their psychological adjustment to work. Dr. Abramis, though, believes that the feeling that one's work is fun is of equal importance and that job satisfaction and having fun at work are independent considerations.

A major source of fun at work, the study showed, is joking with fellow workers, according to Dr. Abramis. ''If you are trying to improve people's performance at work, it is not enough to improve their job satisfaction,'' he said. ''Increasing their sense of having a good time at work improves their performance over and above satisfaction.''

Joking also has its dangers, particularly carelessness, according to Dr. Isen. ''If you want a jocular environment at work, you need to make sure people keep in mind the importance of their work,'' she said. ''If you don't, feeling good may make people sloppy where they should be plodding. But if you tell people who are feeling good that they have made a mistake, they are especially thorough in correcting their errors.'' Implications for Children

Although it is a relatively new idea that joking may enhance productivity at work, humor has long been used to make learning more palatable for children, as ''Sesame Street'' demonstrated. At first, some educators argued that such humor was detrimental to learning, because it drew children's attention away from the serious parts of the material presented. More recently, though, interspersing humor among the serious has been shown to improve children's learning, provided the humor is of the right sort.

New research on which sorts of humor aid learning and which hinder it shows that when the humor distorts the information, it often confuses children. According to findings by Dolf Zillman, a psychologist at Indiana University, irony is particularly confusing to young children, who do not yet have the basic knowledge that would allow them to see what is true and what a distortion. Dr. Zillman cites as an example of distortion a ''Sesame Street'' depiction of seat belts on an airplane; when the plane turns upside down the seat-belted characters hang from the cockpit as if the belts were rubber.

Children up to fourth grade, and perhaps beyond, are often confused by such distortions, Dr. Zillman reported in the

''Handbook of Humor Research'' (Springer-Verlag). On the other hand, he has found that humor that does not distort generally enhances children's ability to master new material. The solution he recommends is to use jokes that are unrelated to the topic at hand, rather than jokes about the information itself. The Maturing Process

By the time students reach college age, though, humor that is unrelated to the educational topic can backfire, Dr. Zillman warns.

A lecturer who habitually tells such jokes may be viewed as digressing, according to Dr. Zillman, and the joking asides seem to interfere with the students' grasp of the material presented. On the other hand, lecturers who weave into their material humor about the topic seem to be more effective.

Exactly what people find funny changes as they age, according to a survey of 40 stand-up comedians performed by Lucille Nahemow, a psychologist at the University of Connecticut. ''Adults of all ages respond to sexual humor,'' she said, ''while younger audiences like aggressive humor, such as put-down jokes, and older audiences like jokes about family life.''

Jokes serve an important social function in strengthening the bonds between people, researchers are finding. By laughing at the

same things, people let one another know that they have a similar outlook, without having to say so. This makes jokes especially important in communicating about discomforting topics.

''Many jokes are a way to talk about troubling topics like sex and racism,'' according to Alan Dundes, a folklorist at the University of California at Berkeley, who in ''Cracking Jokes'' (Ten Speed Press) analyzes the hidden meanings of humor. By laughing at a joke, the listener tacitly signals that he shares the attitude implicit in it, Dr. Dundes argues.

''Wherever there is anxiety in a culture, you find humor,'' Dr. Dundes said. ''In Eastern Europe, for example, you find many more jokes about politics and Russians than you do in the West, where these concerns are not so overriding.''

Indeed, Dr. Dundes takes the popular jokes of a people as a barometer of their hidden concerns. Of particular significance, he finds, are ''joke cycles,'' jokes on a single topic that spring up suddenly, have many variations and are extremely popular. Thus, in his view, ''Jewish American princess'' jokes of the late 1970's were a reaction to feminism.

''All jokes are serious, and anything funny is at someone's expense,'' Dr. Dundes said. ''It is hard to find a truly harmless joke, one without a serious overtone.''

vast的中文释义

vast的发音:英音 [ vɑ:st ];美音 [ v?st ] vast的中文翻译: adj. 辽阔的;巨大的;庞大的;大量的 词形变化:形容词比较级:vaster,vastest;副词:vastly;名词:vastness。 同义词:huge,immense,brobdingnagian; 。单词分析:这些形容词均有“巨大的,庞大的”之意。 huge:含义广,强调体积或容积的庞大。也可用于引申意义。enormous:指体积、数量或程度远远超过一般标准。 immense:正式用词,侧重空间的广阔,也指面积或分量的巨大。giant:非正式用词,多为褒义。指如巨人般的庞大体积。 gigantic:指面积或体积的巨大,但多用于引申意义。 colossal:侧重尺寸、规模和体积的无比巨大。 vast:多指空间、面积、范围的巨大,不涉及重量。 massive:指大的体积、数量和重量,侧重庞大而笨重。 tremendous:指某物很大,大得惊人;也可用作引申意义。 vast的英语解释: unusually great in size or amount or degree or especially extent or scope 相关短语: vast population and limited farmland 人多地少 vast scale 大量的 vast stretches of paddy fields 成片的稻田 vast sums 大笔金钱 vast的例句:

and the vast extent of America would insure him impunity and safety 美洲大陆那么大,他当然更有把握能够逍遥法外了。 From her ruptured tanks poured a reddish-brown gusher of oil that roiled and boiled and gradually spread a vast slick over the greyblue waters 从破裂的油轮里,喷涌出一股股红棕色的原油,汹涌澎湃,渐渐地在蔚蓝色海面上形成了一层巨大的油膜。 They are war- horses. Either could face ten thousand. They make the white silk stretch away into a vast desert. 此皆骑战一敌万,缟素漠漠开风沙。 He inherited vast estates on his accession to the throne. 他即位后继承了大片领地。 Love is closer anyway and warmer than adoration of some vast unknowable cloud 爱情,比起对巨大而不可捉摸的云雾的崇拜来说,毕竟更加亲切,更加温暖。

标志及其含义

1 中国银行(Bank Of China),行标从总体上看是古钱形状代表银行,“中”字代表中国;外圆表明中国银行是面向全球的国际性大银行。 2 工商银行(Industrial and Commercial Bank of China Limited),整体标志是以一个隐性的方孔圆币,体现金融业的行业特征,标志的中心是经过变形的“工”字,中间断开,使工字更加突出,表达了深层含义。两边对称,体现出银行与客户之间平等互信的依存关系。以“断”强化“续”,以“分”形成“合”,是银行与客户的共存基础。设计手法的巧应用,强化了标志的语言表达力,中国汉字与古钱币形的运用充分体现了现代气息。 3 建设银行(China Construction Bank),以古铜钱为基础的内方外圆图形,有着明确的银行属性,着重体现建设银行的"方圆"特性,方,代表着严格、规范、认真;圆,象征着饱满、亲和、融通。图形右上角的变化,形成重叠立体的效果,代表着“中国”与“建筑”英文缩写,即:两个C字母的重叠,寓意积累,象征建设银行在资金的积累过程中发展壮大,为中国经济建设提供服务。图形突破了封闭的圆形,象征古老文化与现代经营观念的融会贯通,寓意中国建设银行在全新的现代经济建设中,植根中国,面向世界。标准色为海蓝色,象征理性、包容、祥和、稳定,体现国有商业银行的大家风范,寓意中国建设银行象大海一样吸收容纳各方人才和资金。 4

交通银行(BANK OF COMMUNICATIONS),交通银行行徽将英文译名BANK OF COMMUNICATIONS词首的小写字母“b”和“c”组合起来,构成了一个立体面,表示企业的实力和业务的综合性。整个图案具有延伸感,体现交通银行不断发展、壮大、日益繁荣的趋势。标准色为深蓝色,象征交通银行像大海一样博大精深,寓意稳重,踏实而可靠!交通银行是由晚清著名改革派政治家和书法家郑孝胥题写的。 5 农业银行(Agricultural Bank of China),中国农业银行标志图为圆形,由中国古钱和麦穗构成。古钱寓意货币、银行;麦穗寓意农业,它们构成农业银行的名称要素。整个图案成外圆内方,象征中国农业银行作为国有商业银行经营的规范化。麦穗中部构成一个“田”字,阴纹又明显地形成半形,直接了当地表达出农业银行的特征。麦穗芒刺指向上方,使外圆开口,给人以突破感,象征中国农业银行事业不断开拓前进。行徽标准色为绿色。绿色的心理特性是:自然、新鲜、平静、安逸、有保障、有安全感、信任、可靠、公平、理智、理想、纯朴,让人联想到自然、生命、生长;绿色是生命的本原色,象征生机、发展、永恒、稳健,表示农业银行诚信高效,寓意农业银行事业蓬勃发展。中国农业银行标志的原作者是陈汉民先生。 6 整个标志为字母“A”的字型体,由四段半径不同的圆弧线交汇而声成。整体构图简洁大方,富于动感。图形鲜红的色彩代表了安踏的活力与进取精神。圆弧构造出的空间感展现了安踏人开拓创业的无限发展前景,变型的“A”则抽象出一只升腾而起的飞行形象,以极其简约,

随机森林原理解释及其中各个参数的含义中文解释 (2)

一、RF原理解释: 首先,从给定的训练集通过多次随机的可重复的采样得到多个bootstrap 数据集。接着,对每个 bootstrap 数据集构造一棵决策树,构造是通过迭代的将数据点分到左右两个子集中实现的,这个分割过程是一个搜索分割函数的参数空间以寻求最大信息增量意义下最佳参数的过程。然后,在每个叶节点处通过统计训练集中达到此叶节点的分类标签的直方图经验的估计此叶节点上的类分布。这样的迭代训练过程一直执行到用户设定的最大树深度(随机森林提出者Breiman采用的是ntree=500)或者直到不能通过继续分割获取更大的信息增益为止,网上的代码中作者都是对树的最大深度设置了最大值。 二、函数,参数的中文解释 function model = classRF_train(X,Y,ntree,mtry, extra_options)随机森林中模型的训练 X,表示输入的数据矩阵 Y输出 Ntree 设置的树的数目 Mtry的默认值为 floor(sqrt(size(X,2)),表示不超过矩阵X列数的二次开根值的整数。extra_options 包含很多控制RF的项 取值为1或0,默认值为1,表示是否做变量替换 表示预先知道的类,函数首先得到一个升序排列的标签然后给先前的类同样的排序。

只在分类器中使用的一个向量,长度等于类的数目。对类的观察值是取对cutoff投票占的的最大比例的一个。 用于分层抽样 样本的长度 表示终端节点的最小值,这个参数设置得越大会使更小的树生长,耗时更少。 判断是否需要对预测器的importance进行评估 决定是否对casewise的重要性度量进行计算 判别是否计算行之间的距离 判断是否计算out-of-bag 如果设定为TRUE,当随机森林运行的时候输出更多冗长的数据。如果设置为一些整数,输出每个追踪树。 通过树的数目矩阵跟踪每个样本在树上的in-bag。 norm_votes 统计每一类的投票数 importance 对于分类器来说是一个列数等于类别数加二,第一列计算精度下降值。在ncalss+1列表示所有类平均精度减少值。最后一列表示Gini指数平均减小值。在随机森林用于回归的应用中importance 表示的含义又不一样,我们只用到分类的作用,所以对回归的含义不做介绍。 importanceSD 标准差 localImp 包含importance标准化残差测量值的矩阵 ntree 生长的树的数目

英文版报价单模板Quotation

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汉字偏旁部首的含义

汉字偏旁部首的含义 偏旁部首歌(上)》 小朋友们,汉字的结构虽然很复杂,不过呢,却很有规律,很多汉字中间,都有相同的部分,这个相同的部分呢,就叫做部首。 每个部首都有自己的名字,把它们编成歌谣,你就能牢牢记住。我们就来瞧一瞧,是怎么编的吧。 金少两点金字旁,千锤百炼铁成钢; 一棵树,木字旁,杨柳青松小白杨; 两滴水珠两点水,冰凉冷冻都来陪; 三滴水珠三点水,江河湖海都是水; 小小火苗火字旁,灿烂辉煌放光芒; 一堆土,提土旁,黄土墙外小池塘; 一只手,提手旁,摸爬滚打苦难扛;小姑娘,女字旁,姐姐妹妹忙梳妆;一张嘴,口字旁,吹起小号嘟嘟响;要说话,言字旁,认真上课要听讲;一把刀,立刀旁,手持宝剑铁金刚;一道撇,单人旁,我们大家是伙伴儿;两道撇,双人旁,行人路上独彷徨;一只耳朵单耳旁,遇到危险要卫防;两只耳朵双耳旁,遇到障碍不投降;一竖两点竖心旁,慌慌张张好匆忙;一人走路走之旁,我追你逃到远方;一只小狗反犬旁,豺狼虎豹好猖狂;两根犄角牛字旁,骡马牛羊放牧场;

一根丝线绞丝旁,绫罗绸缎细裁量。偏旁部首歌(下)》 斜玉旁,王字旁,环佩玲珑响叮当; 正文反写反文旁,收放自如好文章; 衣少一点示字旁,福禄禧寿添吉祥; 高头大马马字旁,骆驼背上驮两箱; 一撇一捺人字头,三人从命来会合; 一二三四四字头,赏罚分明无疏漏; 春日无光春字头,春加两虫变蠢头; 去尾留头病字头,病痛缠身人消瘦; 秃尾老虎虎字头,子虚乌有别犯愁;多一点,宝盖头,一扇牢门两人守;少一点,秃宝盖,冠军桂冠头上戴;两根草,草字头,花草芳菲蝶儿游;一竿青竹竹字头,提篮背筐挖笋头;一片屋顶户字头,层层房间一座楼;一座山,山字头,清风微岚绕山岗;点点滴滴雨字头,雨雪霏霏乌云走;一横一撇片厂头,人在东厢马在厩;像四非四皿字底,碟盏盆盘收柜里;一颗红心心字底,忐忑不安心焦急;四条边,是方框,囝囝囡囡编圆筐

完整报价单模板(文字版)

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中文含义 相关操作 ACC SENSOR BLOCKED 自适应巡航系统扫描区域受阻挡 检查自适应巡航传感器是否被杂物覆盖 AIRBAG FAULT 辅助安全系统故障 立即寻求授权维修援助 AUTO DOOR LOCK(speed related locking) 自动上锁(速度相关锁定 ON/OFF A VERAGE CONS .RESET MPGL/100KM 旅行电脑中提示信息不要作任何处理 A VERAGE SPEED RESET MILES KM 旅行电脑中提示信息不要作任何处理 C CANNOT EDIT ON THE MOVE 车辆行驶时驾驶员尝试进(CUSTOMER SETTINGS)菜单 停下车辆,再进入该菜单进行操作 CAUTION PARKBRAKE APPLIED 车辆行驶时没有松开手刹车只有在紧急情况下才可以使用此功能 CAUTION RISK OF GROUNDING WITH SUSPENSION A T NORMAL HEIGHT 当全地形反馈系统需要将车辆提升到‖OFF ROAD ―高度时被手动的降低车辆(或系统不能够提升车辆) 如果可能的话采用手动方式升降底盘,将其升到OFF ROAD 高度. CHECK ALL TYRE PRESSURES 提示信息,在行驶中的轮胎胎压下降至初级警告状态检查轮胎胎压 CHECK BRAKE FLUID 刹车油壶中的油位降到最低刻度立即寻求授权维修援助 CHECK BRAKE PADS 刹车片磨损到最小维修位置立即寻求授权援助 CHECK SPARE TYRE PRESSURE 备胎胎压降到警告状态检查备胎胎压 COOLING SYSTEM FAULT MONITOR GAUGE 防冻液液位低 停车检查防冻液液位,并加满,如果问题依然存在,请联系授权维修经销商 CRUISE CANCELLED 驾驶员关闭巡航定速功能不需要 CRUISE NOT A V AILABLE 系统故障,巡航功能不可用请联系授权维修经销商 CRUISE CONTROL NOT PERMITTED 系统故障或车辆操作的参数超出正常巡航操作值查看定速巡航功能选择的说明部分 CRUISE GAP 自适应巡航系统距离设定(时间间隔) 调速需要的距离(四种设定) D DRIVER OVERRIDE 在巡航定速时,驾驶员踩下油门踏板不需要任何操作.当油门松开时信息将会消失,巡航将会恢复 DOOR MIRROR DIP STORED 记忆系统确认已存储驾驶员信息不需要 DRIVER INTERVENE 紧急警告,需要驾驶员踩刹车如果需要,请踩刹车 DRIVER OVERSPEED SET CLEAR 旅行电脑信息不需要任何操作 DRIVER’S DOOR OPEN驾驶员侧门打开或没关严关闭驾驶员侧门 DSC SWITCHED OFF 系统不可用---DSC开关已被关闭需要重新启动,请重新 E ENGINE SYSTEM FAULT 发动机管理系统存有一系列故障可能降低发动机性能避免高速行驶,并联系授权经销商

花名及含义(中英)

杜鹃花azalea -为了我保重自己,温暖的,脆的,强烈的感情,在中国是子宫的象征take care of yourself for me, temperance,fragile, passion, in China it’s the symbol of womanhood 杨梅arbutus-我只爱你you are the only one I love 矢车菊bachelor button -单身的幸福single blessedness 球海棠begonia-小心be ware 爱尔兰风铃草bluebell of Iceland 好运气Good luck 野风信子Bluebell 谦虚modest 凋零的花束bouquet of withered flowers-被拒绝的爱rejected love 仙人掌cactus-忍耐endurance 茶花camellia-赞赏,完美,给男人以好运气的礼物admiration,perfection,gift to a man for good luck 茶花(粉色)camellia-渴望着你longing for you 茶花(红色)camellia-你是我心中的火焰you’re a flame in my heart 茶花(白色)camellia-你值得敬慕you’re adorable 康乃馨(一般来说)carnation-魅力使人柔弱的爱fascination,womanized love 康乃馨(粉色)carnation-我永远不会忘了你I’ll never forget you 康乃馨(红色)carnation-我的心为你而痛,赞赏My heart aches for you,admiration 康乃馨(紫色) carnation-任性capriciousness 康乃馨(原色)carnation(solid color)是-yes 康乃馨(有斑纹)carnation(stripped)不!拒绝,我不能和你在一起No! Refusal,sorry I can’t be with you. 康乃馨(白色)carnation-甜蜜而可爱,天真无邪,纯洁的爱,给女性带来好运气的礼物sweet and lovely ,innocence,pure love ,gift to women for good luck 康乃馨(黄色)carnation-你让我感到失望,抛弃You have disappointed me ,rejection

外贸报价单模板

PRODUCT QUOTATION Company address Official website of the company

1. Company Introduction 1.1 Profile We are one of the China’s leading suppliers of the paper bag making machine in the eco friendly food paper bags industries. To give client completely solutions of manufacturing paper bags based on client’s real demand. Only high quality products can win the widest market. Hence, we strictly focus on manufacturing every component with high standard quality of paper Bag Machines and paper bag auxiliary machine since the beginning. In the production process of paper Bag Machine, we pay attention to every detail and quality control of the production line. We can get high quality materials with lower prices. We always focus on manufacturing paper bag machines and paper handle machines with lowest cost and good quality. Through the utilization of high quality materials and stringent quality controls, our products are extremely reliable, easy to operate, and performs at a high speed.

完整的外贸报价单模板-

完整的外贸报价单一、报价单的头部 01,卖家基本资料(举例) 工厂标志(Factory Logo) 公司名称(Company) 详细地址(Detailed Address) 邮政编码(Post Code) 联系人名(Contact) 职位名称(Job title) 电话号码(Telephone No.) 传真号码(Fax No.) 手机号码(Mobile No.) 邮箱地址(E-mail Address) 聊天方式(Messenger Online) 公司网址(Website Address) 02,买家基本资料(举例) 工厂标志(Factory Logo) 公司名称(Company) 详细地址(Detailed Address) 邮政编码(Post Code) 联系人名(Contact) 职位名称(Job title) 电话号码(Telephone No.) 传真号码(Fax No.) 手机号码(Mobile No.) 邮箱地址(E-mail Address) 聊天方式(Messenger Online) 公司网址(Website Address) 03,报价单的抬头: 报价单标题(Quotation/Quotation Form/Price List) 参考编号(Reference No.) 报价日期(Date) 有效日期(Valid date) 二、产品基本资料(Product’s Basic information) 序号(No.) 货号(Item No.) 型号(Type) 产品名称(Product’s Name) 产品图片(Photo) 产品描述(Description) 原材料(Materials)

随机森林原理解释及其中各个参数的含义中文解释

取值为1或0,默认值为1,表示是否做变量替换 表示预先知道的类,函数首先得到一个升序排列的标签然后给先前的类 extra_opti on s.cutoff 对cutoff 投票占的的最大比例的一个。 extra_opti on s.strata extra_optio ns.sampsize extra_opti ons.no desize 时更少。 extra_optio ns.importa nce extra_opti ons.lo calImp extra_opti on s.proximity extra_opti on s.oob_prox extra_opti on s.do_trace 一、RF 原理解释: 首先,从给定的训练集通过多次随机的可重复的采样得到多个 bootstrap 数据集。接着,对每个bootstrap 数据集构造一棵决策树,构造是通过迭代的将数据点分到左右两个子集中实现的,这个分割过程是一个搜 索分割函数的参数空间以寻求最大信息增量意义下最佳参数的过程。然后,在每个叶节点处通过统计训练 集中达到此叶节点的分类标签的直方图经验的估计此叶节点上的类分布。这样的迭代训练过程一直执行到 用户设定的最大树深度(随机森林提出者 Breiman 采用的是ntree=500 )或者直到不能通过继续分割获取更 大的信息增益为止,网上的代码中作者都是对树的最大深度设置了最大值。 二、函数,参数的中文解释 fun cti on model = classRF_tra in (X,Y, ntree,mtry, extra_optio ns) 随机森林中模型的训练 X,表示输入的数据矩阵 丫输出 Ntree 设置的树的数目 Mtry 的默认值为 floor(sqrt(size(X,2)) ,表示不超过矩阵X 歹列数的二次开根值的整数。 extra_optio ns 包含很多控制RF 勺项 extra_opti on s.replace extra_optio ns.classwt 同样的排序。 只在分类器中使用的一个向量, 长度等于类的数目。对类的观察值 是取 用于分层抽样 样本的长度 表示终端节点的最小值,这个参数设置得越大会使更小的树生长,耗 判断是否需要对预测器的 importance 进行评估 决定是否对casewise 的重要性度量进行计算 判别是否计算行之间的距离 判断是否计算out-of-bag 如果设定为TRUE 当随机森林运行的时候输岀更多冗长的数据。如果 设置为一些整数,输出每个追踪树。 extra_optio ns.keep 」nbag 通过树的数目矩阵跟踪每个样本在树上的 in-bag norm_votes 统计每一类的投票数 importa nce 对于分类器来说是一个列数等于类别数加二,第一列计算精度下降值。在 n calss+1 列表示所有类平均精度减少值。 最后一列表示Gini 指数平均减小值。在随机森林用于回归的应用 中importance 表示的含义又不一样,我们只用到分类的作用,所以对回归的含义不做介绍。 importa nceSD 标准差 localimp 包含importance 标准化残差测量值的矩阵 ntree 生长的树的数目 mtry 在每一个分裂节点处样本预测器的个数。 Votes 一个矩阵,行表示每一个输入数据点,列表示每一类,记录投票数。 Proximity 如果proximity=TRUE 表示随机森林被调用。 Combine 把树结合起来 getTree(rfobj, k=1, labelVar=FALSE) ,这个函数的作用是从随机森林中提取树的结构, rfob 表示对应的随机森林, k 表示要提取的那棵树,,labelVar 表示是否是最好的标签用于变量分离

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