?dropout

dropout發(fā)音

英：[?dr?pa?t]　　美：[?drɑp?a?t]

英：　　美：

dropout中文意思翻譯

n.中途退出者,退學(xué)學(xué)生

dropout常見例句

1 、safety factor for dropout───回動(dòng)可靠系數(shù)

2 、RF dropout killer───射頻信號失落消除器

3 、He is a dropout, and messes around all day.───他是一名流失生，整天游手好閑。

4 、In 1972, the dropout rate among those whom Aspira counsels was 6. 6 percent.───1972年埃斯皮拉所輔導(dǎo)的學(xué)生,退學(xué)率只占6.6%。

5 、Controller Design of a Networked Control System with Delay and Data Dropout───存在時(shí)延和數(shù)據(jù)丟失的網(wǎng)絡(luò)控制系統(tǒng)的控制器設(shè)計(jì)

6 、Keywords polymerase chain reaction;single cell;Amelogenin gene;preimplantation genetic diagnosis;allele dropout;───關(guān)鍵詞聚合酶鏈?zhǔn)椒磻?yīng);單細(xì)胞;牙釉質(zhì)基因;植入前遺傳學(xué)診斷;等位基因脫扣;

7 、And it notes that studies have shown that large schools are linked to low student performance and higher dropout rates.───并且它注意到這些研究表明學(xué)生成績差和高退學(xué)率是和大學(xué)校聯(lián)系在一起的。

8 、I was a high school dropout with learning disabilities and was set on surfing the biggest waves in the world, prom dresses first in California and then in Hawaii, where I would later live.───想會(huì)公寓，可是他卻想讓我留下來，我沒答應(yīng)，急著回了公寓，我知道，如果我當(dāng)晚真的留下來的話，跟永之間就再也沒有可能了！

9 、colour dropout compensator───彩色失落補(bǔ)償器

10 、Stability of Networked Control Systems with Timedelay and Data Packet Dropout───具有延時(shí)和數(shù)據(jù)包丟失的網(wǎng)絡(luò)控制系統(tǒng)的穩(wěn)定性

11 、low dropout voltage linear regulator───低壓差線形穩(wěn)壓器

12 、The original American dropout, he has inspired seekers of authenticity for.───原來美洲輟學(xué),他授意求職真實(shí)性一百五十年。

13 、Reflecting on the Issues of School Dropout in Rural Area───對農(nóng)村中小學(xué)生流失問題的思考

14 、He called the dropout rate stagering" staggering" .───他說退學(xué)率停滯不前。

15 、We've had a lastminute dropout, if you're interested.─── 有人最後關(guān)頭退出了 不知道你感不感興趣

16 、What is the average time their Ph.D. Students take to finish their degrees? What is the dropout rate for their students?───導(dǎo)師的博士生平均多久能夠拿到學(xué)位?學(xué)生的退學(xué)率是多少?

17 、Although myalgia and pyrexia were more common in treatment groups, dropout rates related to treatment were similar to those in the placebo group.───盡管治療組中，肌痛與發(fā)熱更為常見，但由于治療反應(yīng)而推出的比例，與安慰劑組類似。

18 、Then he was a high school dropout living on the run.─── 於是他成了一名輟學(xué)的在逃犯

19 、The Problem of Dropout in the Rural Junior Middle School───對農(nóng)村初中學(xué)生輟學(xué)問題的探析

20 、low dropout(LDO)───LDO

21 、As the games proceeded with the predicted dropout of China and the unexpected early exit of Japan, South Korea shone on as the solo bright Asian light.───中國隊(duì)的落敗在意料之中，日本隊(duì)提早出局卻出人意表，只有韓國隊(duì)繼續(xù)挺進(jìn)，成為亞洲的希望之光。

22 、He became a college dropout, though nongraduate may be the more precise term.───他成了輟學(xué)生，盡管未畢業(yè)也許是更準(zhǔn)確的定義。

23 、I'm surprised the dropout rate isn't higher.─── 我很驚訝離職率竟然這么低

24 、Statistic data at home and abroad demonstrates that the rate of dropout of distance Learner's in the area of distance education far surpasses that of Learner's in the area of traditional education,and in Asia the rate up to 50%.───國內(nèi)外統(tǒng)計(jì)數(shù)據(jù)都顯示遠(yuǎn)程教育的輟學(xué)率遠(yuǎn)遠(yuǎn)高于傳統(tǒng)教育,在亞洲,遠(yuǎn)程教育的輟學(xué)率更是高達(dá)50%。

25 、Package dropout rate───丟包率

26 、He successfully transitioned from cocky college dropout to brass-knuckle negotiator to seasoned captain of industry, eventually becoming the richest man in the world and a model philanthropist.───他已經(jīng)成功地從當(dāng)年那個(gè)桀驁不羈的哈佛輟學(xué)生蛻變成為一名成熟的談判者，繼而轉(zhuǎn)變?yōu)榻?jīng)驗(yàn)豐富的企業(yè)領(lǐng)導(dǎo)，最終成為世界首富和慈善家中的楷模。

27 、At the same time, they reported that the city's dropout rate fell be low below 15%.───同時(shí)，他們報(bào)告說這個(gè)城市的退學(xué)率降低到了15%。

28 、A professional degree will result in an average annual income of about twice that of college graduates (or six times the income of a high school dropout).───大學(xué)以上的學(xué)歷會(huì)導(dǎo)致比大學(xué)畢業(yè)的年平均收入增加一倍（或是高輟學(xué)人的六倍）。

29 、Data Transmission with Data Package Dropout and Control Method on NCS───NCS中數(shù)據(jù)傳輸丟包與控制方法

30 、ADI offers fixed and adjustable output voltages, up to 1.5 A of output current, and dropout voltages down to 80 mV.───ADI公司提供固定或可調(diào)的輸出電壓、高達(dá)1.5 A的輸出電流和低至80 mV的(輸出與輸入)電壓差。

31 、After the outbreak of the Pacific War, Japan Quartermaster tight, and describing the construction of a bridge of reinforced shipped to Hainan to build terminals, makes engineering dropout.───太平洋戰(zhàn)爭爆發(fā)后，日本軍需日絀，竟將建橋的鋼筋運(yùn)到海南島修筑碼頭，使得工程中輟。

32 、A survey and research of junior middle school students' dropout in the rural backwards areas in Central China───中部貧困農(nóng)村地區(qū)初中學(xué)生輟學(xué)問題調(diào)查研究

33 、low dropout voltage───低脫落電壓

34 、Pierce is not just a college dropout.─── 皮爾斯可不僅是個(gè)大學(xué)綴學(xué)生

35 、The low dropout voltage of the A6260 allows a single white LED to be driven safely, at full current, with a supply voltage down to 6 V.───A6260的低壓差電壓特點(diǎn),可在滿電流及電源電壓低至6 V時(shí),實(shí)現(xiàn)單個(gè)白色LED的安全驅(qū)動(dòng)。

36 、I'm a high school dropout and a bartender, so don't listen to me.─── 我高中輟學(xué) 還當(dāng)過酒保 別聽我的

37 、talents' dropout───人才流失

38 、It's done. I'm an engineering school dropout.─── **好了 我讀過工科 只是中途退了學(xué)

39 、Not only that, but wise companies over-hire to sandbag against employee dropout.───不僅如此，一些聰明的企業(yè)會(huì)進(jìn)行冗余招聘以對抗員工流失。

40 、It’s an amazing life story: Fiorina was a liberal arts major and law school dropout who didn’t even consider a business career until her mid-twenties.───不同于一般企業(yè)家、科技人的出身背景讓菲奧莉娜的成功之路顯得與眾不同。

41 、Peter is a high school dropout.───彼得從中學(xué)退學(xué)了。

42 、She says students dropout drop out mainly because their families need them to work , or because parents arrange marriages for girlgirls.───她說學(xué)生退學(xué)主要是因?yàn)樗麄兊募彝バ枰麄內(nèi)スぷ?，或者因?yàn)楦改笧榕才帕嘶橐觥?/p>

43 、Low Dropout Voltage Regulator (LDO) has been widely used in all kinds of electronic products, including mobile phone, digital camera, PDA, MP3 and MP4, etc.───其中低壓差線性電源(LDO)已經(jīng)在當(dāng)今的電子產(chǎn)品中獲得了廣泛的應(yīng)用，包括移動(dòng)**、數(shù)碼相機(jī)、PDA、MP3、MP4等設(shè)備中。

44 、dropout voltage low current───下降電壓低電流

45 、You never told me you were a dropout.─── 你從來沒和我說過你是輟學(xué)學(xué)生

46 、Exponential Stability of State Feedback Networked Control System with Time-delay and Data Packet Dropout───存在時(shí)延和數(shù)據(jù)包丟失情況下狀態(tài)反饋網(wǎng)絡(luò)控制系統(tǒng)的指數(shù)穩(wěn)定性

47 、so Darwin is an Edinburgh dropout?───“那也就是說達(dá)爾文是愛丁堡的肄業(yè)生了?”

48 、Their life is simple, their physical condition has declined and short-sightedness, obesity, school dropout have arisen.───制約農(nóng)村學(xué)校體育發(fā)展因素，既有教育觀念問題，也有教育管理體制問題；

49 、Conditions of compulsory education have improved considerably, and the dropout rate of school-age children has decreased to 6.5 percent.───義務(wù)教育辦學(xué)條件明顯改善，適齡兒童輟學(xué)率下降到6.5%；

50 、Don't put him down simply because he's a high-school dropout.───不要只是因?yàn)樗袑W(xué)退學(xué)就說他不行。

51 、Research on Thermal Protect for Low Dropout Linear Regulator───低壓差線性穩(wěn)壓器溫度保護(hù)電路的研究與設(shè)計(jì)

52 、In the long haul, she'll regret having been a school dropout.───她終歸會(huì)后悔不該中途輟學(xué)。

53 、A large number of dropout children have returned to school, thanks to government and social assistance.───失學(xué)兒童得到救助。

54 、Circuit training has a lower dropout rate, is an efficient calorie burner, increases muscular strength and decreases body fat.───同時(shí)這種方式可以有效的消耗熱量，增強(qiáng)肌肉力量以及減少體內(nèi)脂肪。

55 、The enrollment rate for girl child reached 98.5%,and their dropout rate was 1.4%--a decline of 0.6 points of percentage over the rate in 1995.───女童入學(xué)率為98.8%，輟學(xué)率為1.4%，輟學(xué)率比1995年下降0.6個(gè)百分點(diǎn)。

56 、packet dropout compensating───丟包補(bǔ)償

57 、ye, even a dropout from Edinburgh changed the world.───“是啊，一個(gè)愛丁堡的肄業(yè)生都改變了世界?！?/p>

58 、Low dropout and low quiescent current are important for long battery life in LDO linear regulators.───DO線性穩(wěn)壓器的低漏失電壓、低靜態(tài)電流特性使電池使用具有高效率和長壽命。

59 、I'm a college dropout, just remember that.─── 我大學(xué)中途退學(xué)了 要記得哦

60 、dropout compensation───失落補(bǔ)償

61 、NPN Low Dropout Linear Regulators───NPN型低壓差線性調(diào)節(jié)器

62 、Low Dropout Regulator───低壓差穩(wěn)壓器

63 、But MMT is faced with many challenges such as low rate of AIDS patient enrollment,high rate of dropout from MMT and non-standard management of MMT out-patient.───建議通過逐步降低美沙酮維持治療入組條件,提高入組率;

64 、low dropout operation───低漏失工作

65 、The predictive factors for dropout were female gender and the presence of coexisting chronic diseases.───中輟的預(yù)測因子為女性及同時(shí)有其他慢**存在。

66 、Qiang Ling,Michael D Lemmon.Optimal dropout compensation in networked control systema[C].In:Proceeding of the 42nd IEEE Conference on Decision and Control,Maui,Hawaii,USA,2003-12───于之訓(xùn),陳輝堂.閉環(huán)網(wǎng)絡(luò)控制系統(tǒng)的理論與實(shí)驗(yàn)研究[D].博士學(xué)位論文.上海同濟(jì)大學(xué)電氣工程系,2000

67 、Like African-Americans, Mexican-Americans are increasingly relegated to segregated, substandard schools, and their dropout rate is the highest for any ethnic group in the country.───像非裔美國人那樣，墨西哥裔美國人也逐漸進(jìn)入那種實(shí)施種族隔離的次等學(xué)校，他們的輟學(xué)率在其它種族中是最高的。

68 、When his father died in the accident he had to dropout of school.───他的父親在事故中喪生,他不得不輟學(xué)。

69 、The enrollment rate for girl child reached 98.5%, and their dropout rate was 1.4%--a decline of 0.6 points of percentage over the rate in 1995.───女童入學(xué)率為98.8%，輟學(xué)率為1.4%，輟學(xué)率比1995年下降0.6個(gè)百分點(diǎn)；

70 、He called the dropout rate "staggering".───他稱這種輟學(xué)率“太過驚人”。

71 、Low - dropout voltage───低壓差

72 、Stability analysis for networked control systems with long transmission delay and data packet dropout───具有長時(shí)延及丟包的網(wǎng)絡(luò)控制系統(tǒng)穩(wěn)定性分析

73 、The low PCR success rate and poor PCR repeatability of microsatellite alleles due to allelic dropout and false alleles make it difficult to obtain a reliable microsatellite data set.───微隨體對偶基因的低PCR成功率及低可重復(fù)性（即高對偶基因遺失率及高假性對偶基因出現(xiàn)率），使得可靠的微隨體資料庫難以建立。

74 、The Internationals Network says its schools have an average dropout rate of just 5%.───國際網(wǎng)絡(luò)組織說他的學(xué)校的平均退學(xué)率只有5%。

75 、I'm just a college dropout with no future.─── 我只是個(gè)沒前途的大學(xué)輟學(xué)生

76 、low dropout linear regulation───低壓差線性穩(wěn)壓器

77 、Conditions of compulsory education have improved considerably, and the dropout rate of school-age children has decreased to 6.5 percent───義務(wù)教育辦學(xué)條件明顯改善，適齡兒童輟學(xué)率下降到6.5%

78 、"master linguist, Yale dropout and fair-haired boy of the OSS" (Edward Klein)───“語言學(xué)碩士，耶魯大學(xué)的退學(xué)者，空間系統(tǒng)處的金發(fā)男孩”(愛德華·克萊因)

79 、If he were to compare for you the lifestyle of a person with a Ph.D. to that of a grade school dropout, you might complain that this comparison is not helpful for your decision.───如果你給他用一個(gè)擁有博士學(xué)位的人的生活方式與一個(gè)沒有上完小學(xué)的人進(jìn)行比較，他會(huì)抱怨這種比較無助于他的決策。

80 、He called the dropout rate staggery" staggering" .───他稱這個(gè)失學(xué)率感到震驚。

81 、I'll log a call for dropouts that match the timeline.─── 我去找出符合時(shí)間的輟學(xué)生名單

82 、It's always unusual for a Harvard dropout to be here at MIT, addressing a distinguished crowd like this.───它對哈佛是總是不尋常的輟學(xué)生在麻州理工學(xué)院這里,向像這一樣的卓著群眾演說。

83 、dropout detector───失落檢測器

84 、Liquid dropout naturally occurs with reservoir depletion below the dewpoint,which differs from dry gas.It is unresolved to account for the effect of condensate on deliverability.───凝析油的析出是凝析氣藏衰竭過程中普遍存在的現(xiàn)象，此現(xiàn)象是凝析氣與干氣最本質(zhì)的區(qū)別，但如何考慮凝析油的影響仍然是一個(gè)未曾得到圓滿解決的難題。

85 、Stability of networked control systems with data packet dropout and multiple-packet transmission───具有數(shù)據(jù)包丟失及多包傳輸?shù)木W(wǎng)絡(luò)控制系統(tǒng)穩(wěn)定性

86 、A High-Precision Low Dropout Linear Regulator───一種高精度低壓差電壓調(diào)整器

87 、In the application of driving capacitive loads, such as low dropout regulator (LDO), audio amplifier, the system stability is always a problem difficult to solve.───在驅(qū)動(dòng)電容負(fù)載的應(yīng)用中，如低壓降穩(wěn)壓器，音頻放大器等，系統(tǒng)穩(wěn)定性一直以來是很棘手的問題。

88 、Dropout rate due to adverse events was 11% in the PIR group and 0% in the placebo group.───因?yàn)楦弊饔枚顺龃舜螌?shí)驗(yàn)的兒童比例，治療組為11%，安慰劑組0%。

89 、He'll learn his lesson when he finds out no one wants to hire a high-school dropout.───當(dāng)他發(fā)現(xiàn)沒人愿意雇用一個(gè)高中輟學(xué)生時(shí)，他會(huì)學(xué)到教訓(xùn)的。

90 、According to the government memo announcing the rules, the aim is to cut down on dropout rates during China's nine years of compulsory education.───當(dāng)?shù)卣k公室發(fā)出的文件指出,實(shí)行這樣的政策,目標(biāo)是減少正在接受九年義務(wù)教育的輟學(xué)學(xué)生,提高升學(xué)率。

談?wù)凾ensorflow的dropout

Dropout這個(gè)概念已經(jīng)推出4年了，它的詳細(xì)描述見 論文 ?？墒悄?，它仿佛是個(gè)猶抱琵琶半遮面的美女，難以捉摸??！許多文獻(xiàn)都對dropout有過描述，但解釋的含糊不清，這里呢，我也不打算解釋清楚，只是通過tensorflow來看一看dropout的運(yùn)行機(jī)理。

文章分兩部分，第一部分介紹tensorflow中的dropout函數(shù)，第二部分是我的思考

首先看官方函數(shù)定義：

輸入是：

輸出是：

然后我們看看官方API是怎么說這個(gè)函數(shù)的：

注意，輸出的非0元素是原來的 “1/keep_prob” 倍！說了這么多，下面給一個(gè)程序例子：

運(yùn)行的結(jié)果如下：

分析一下運(yùn)行結(jié)果：

特點(diǎn)分析完畢，小總結(jié)一下，dropout這個(gè)概念看起來好高大上，然而在程序中實(shí)現(xiàn)竟然如此簡單！說白了，tensorflow中的dropout就是： 使輸入tensor中某些元素變?yōu)?，其它沒變0的元素變?yōu)樵瓉淼?/keep_prob大小 ！

首先引用此篇 博文 的話：

然后，我就自己試了試，看看小型網(wǎng)絡(luò)中dropout效果到底怎么樣，程序片段如下：

網(wǎng)絡(luò)很簡單，形如 784-30-10 的一個(gè)網(wǎng)絡(luò)，只不過在輸出層前用dropout處理了一下，訓(xùn)練的數(shù)據(jù)是MNIST的手寫數(shù)據(jù)集，然后你猜怎么著？采用dropout以后的訓(xùn)練精度 不升反降 ，后來我把網(wǎng)絡(luò)隱藏層改成100個(gè)神經(jīng)元，結(jié)果依舊，看來，我的網(wǎng)絡(luò)還是太小了，真的如上面那篇博客所說，dropout用不好的話，真是個(gè)累贅！

dropout的理解

在神經(jīng)網(wǎng)絡(luò)中，dropout是一種很常用的操作。

在訓(xùn)練的時(shí)候以一定的概率隨機(jī)丟棄網(wǎng)絡(luò)中的某些節(jié)點(diǎn)。

每個(gè)batch的訓(xùn)練都是在訓(xùn)練一個(gè)網(wǎng)絡(luò)，結(jié)果就是很多網(wǎng)絡(luò)的疊加，類似bagging

ps. 二項(xiàng)分布：n次相互獨(dú)立的伯努利分布，伯努利分布指的是（0-1）分布。

在 3.1中的步驟2 ，會(huì)除以keep_prob，解釋如下：