?stepwise

stepwise發(fā)音

['stepwaiz]

英：　　美：

stepwise中文意思翻譯

adj. 階梯式的；〈音樂(lè )〉級進(jìn)的；逐步的

adv. 逐步地

stepwise常見(jiàn)例句

1 、Utilizing x~2 test, t test, correlativity analysis and stepwise regression analysis to analyse the collected data in SPSS 11.0 software.───分別采用卡方檢驗、t檢驗、相關(guān)分析及逐步回歸分析等方法,應用SPSS 11.0軟件完成數據的統計處理。

2 、Then, the relative disadvantages of the widely used stepwise regression method are discussed, and the theory of information criteria as presented by AIC and BIC is introduced.───在此基礎上，我們對以AIC和BIC為代表的各種基于信息標準的模型選擇法予以介紹和評論。

3 、Stepwise linear regression showed that rumination in negative emotion, frequency of experiencing negative emotion and fancy were independently predictive variables of post-traumatic stress responses.───多元逐步回歸分析顯示，對負性情緒的重視調節，負性情緒的感受頻率，幻想等是創(chuàng )傷后應激反應癥狀總分的獨立預測變量。

4 、stepwise variable optical attenuator───分級可變光衰減器

5 、Multiple linear stepwise regression indicated there was no obvious correlation between resistin gene +299G/A and systolic blood pressure,diastolic blood pressure.───多元線(xiàn)性逐步回歸分析顯示,抵抗素基因+299G/A與收縮壓、舒張壓無(wú)...

6 、Although these reactions appear to follow recognized stepwise pathways, they often occur simultaneously and competitively.───盡管這些反應好像延著(zhù)已知步驟進(jìn)行,但它們常常同時(shí)發(fā)生并競爭。

7 、The attacker should consider and combine multiple various attacking skills and do stepwise attacking to approach the objective.───攻擊方需要組合多種不同的網(wǎng)路攻擊手法、階段性的攻擊，逐步完成攻擊目標。

8 、The coefficients of determination for SNA,ANB,NAPg and UI/SN stepwise regression were 0.96,0.95,0.39 and 0.99 respectively.───上述 4個(gè)角度所作回歸方程的決定系數分別為 0 .96 ,0 .95 ,0 .39和 0 .99。

9 、With the platform of GIS, using principal component analysis and dynamic stepwise cluster analysis of SPSS, tobacco growing areas in Yunnan is regionalized into different eco-climate districts.───摘要 在GIS平臺上，利用統計分析軟件SPSS中的主成份分析和動(dòng)態(tài)逐步聚類(lèi)方法進(jìn)行云南烤煙生態(tài)氣候類(lèi)型區劃。

10 、The public economics was interested in the stepwise redefinition of clear boundary,while the blurry boundary was the organizational sociology's favor.───公共經(jīng)濟學(xué)熱衷于清晰邊界的逐步厘定,組織社會(huì )學(xué)則對模糊的邊界情有獨鐘。

11 、multiple stepwise regression analysis───多元逐步回歸分析

12 、DES MARAIS D J,STRAUSS H, SUMMONS R E,et al.Carbon isotope evidence for the stepwise oxidation of the Proterozoic environment [J].Nature,1992,359:605-609.───專(zhuān)利文獻著(zhù)錄格式：[文獻序號]專(zhuān)利申請者或所有者.專(zhuān)利題名：專(zhuān)利國別，專(zhuān)利號[文獻類(lèi)型標志].公告日期或公開(kāi)日期[引用日期].獲取和訪(fǎng)問(wèn)路徑.

13 、On the basis of road accident records,adopting stepwise cluster analysis and Bayesian probabilistic model, this paper investigates the method of identification of road accident blackspots.───基于已有的道路交通事故統計資料，應用動(dòng)態(tài)聚類(lèi)分析方法和貝葉斯概率模型，對事故多發(fā)點(diǎn)的鑒定方法進(jìn)行了探討。

14 、Data were then analyzed through frequency, mean, standard deviation, one way analysis of variance, and stepwise multiple regression.───所得資料以次數分配、平均數、標準差、單因子變異數分析及逐步迴歸分析等方式進(jìn)行統計分析。

15 、Conclusion The stepwise discriminant analysis of Random Forests can be effectively applied to the research of gene selection and classification.───在類(lèi)間區分度不夠大的情況下分類(lèi)效果提高不明顯。

16 、The collected data were analyzed by t-test (independent), one-way ANOVA (independent), and multiple stepwise regression analysis.───所用的研究工具有工作價(jià)值觀(guān)量表、組織承諾量表、工作投入量表及工作滿(mǎn)意度量表。

17 、Stepwise multiple regressions were carried out on the picture-naming latency. The R square of regression equation was 55.5%.───并嘗試建立了概念一致性、熟悉性、表象一致性和詞頻對圖片命名時(shí)間的回歸方程,其預測能力為55.5%。

18 、But this proposition has no ready-made answer. Especially, if we only give run-of-mill, even inane, advice and measures, it is no use to resolve existing stock and stepwise exposed increment of our country's bad assets.───但這一命題沒(méi)有現成的答案，尤其是如果研究后提出寬泛的甚至是空洞的建議措施，對于解決我國現有不良資產(chǎn)存量和逐步暴露的增量，于事無(wú)補。

19 、acute stepwise levodopa challenge test───急性階梯式左旋多巴試驗

20 、StepWise - news, articles and a software archive.───StepWise-新聞,文章和軟件歸檔庫。

21 、Then, sodium fluoride, potassium fluoride and (rubidium, cesium) fluoride was separated by concentrating, stepwise precipiting from the solution.───分離后的溶液進(jìn)行濃縮,分步析出氟化鈉、氟化鉀和銣銫氟化物。

22 、The parasite population opposing vertical resistance may undergo stepwise development controlled by many genes.───抵抗垂直抗性的寄生物種群可能要經(jīng)歷許多基因控制的步增發(fā)育。

23 、Then,stepwise regression analysis is used to select a best group of factors for the prediction of expressway incident duration,and the multiple linear regression model is established.───在此基礎上,通過(guò)逐步回歸分析確定用于高速公路事件持續時(shí)間預測的最佳變量組合并建立多元線(xiàn)性回歸模型。

24 、Therefore, a stepwise process based on the following operational principles is probably the best course of action.───因此,基于下列操作原則之上的漸進(jìn)式進(jìn)程可能是最佳的行動(dòng)過(guò)程。

25 、A L-tryptophan-highly productive strain TQ2223 was derived from Corynebacterium glutamicum Tx5-32 by stepwise mutagenic treatments with DES.───以谷氨酸棒桿菌Tx5 - 32 (Phe- +Tyr- )為出發(fā)菌株 ,經(jīng)硫酸二乙酯 (DES)多次誘變處理 ,定向選育出一株L -色氨酸產(chǎn)生菌TQ2 2 2 3(Phe- +Tyr- +5 -MTr+5 -FTr+SGr+CINr)。

26 、Zhang Yuqing,Wang Dongqing,Li Binxian,et al.Extraction of diosgenin from dioscorea zingiberensis through stepwise biocatalysis[J].Chinese Traditional and Herbal Drugs,2006,37(5):688-691 (in Chinese).───[2]張裕卿,王東青,李濱縣,等.階梯生物催化協(xié)同提取盾葉薯蕷中的薯蕷皂苷元的研究[J].中草藥,2006,37(5):688-691.

27 、Stepwise material feeding may overcome theproblem raised from the use of diethylene glycol.───所制得的氨基漆成本低、澤淺，性能達到國際同類(lèi)產(chǎn)品指標。

28 、The data obtained from the array have been treated by using stepwise discrimination algorithm and principal component regression.───對陣列輸出的數據，采用逐步判別法進(jìn)行二類(lèi)判別，可以檢測混合蒸氣中少量的乙醇；

29 、The equal volumes of titrant are added stepwise by the use ofpotentiometric method and measure the correspondent potential.───利用電位滴定手段，分步等量地加入滴定劑，測量對應電位。

30 、A burdening optimization model for sintering based on GA (Genetic Algorithm) and stepwise regression, was established and proved at Chongqing Iron and Steel Co.───摘要運用遺傳算法和逐步回歸分析的方法建立燒結配料優(yōu)化模型，對重鋼燒結配料優(yōu)化，并進(jìn)行了實(shí)驗驗證和分析。

31 、Nonlinear multiple regression model on the structure activity relationship of ternary dissymmetric organic phosphate insecticide is obtained by quadratic polynomial stepwise regression method.───摘要采用二次多項式逐步回歸分析法建立了三元不對稱(chēng)有機**酸酯類(lèi)殺蟲(chóng)劑的多元非線(xiàn)性構效關(guān)系回歸模型。

32 、On the flat of GIS, using principal component analysis and dynamic stepwise cluster analysis of SPSS, tobacco growing area in Yunnan is regionalized different ecoclimate types.───摘要在GIS平臺上，利用統計分析軟件SPSS中的主成分分析和動(dòng)態(tài)逐步聚類(lèi)方法進(jìn)行云南烤煙生態(tài)氣候類(lèi)型區劃。

33 、Multiple factor stepwise regression analysis showed that the correlated risk factors of cerebral infarction were PP and CHOL.───多因素逐步回歸分析顯示，腦梗塞發(fā)生的相關(guān)危險因素分別為PP、CHOL。

34 、There was positive correlation (P───多元逐步回歸分析顯示，MT1-MMPmRNA的表達水平與Dukes分期呈正相關(guān)（P

35 、Exteriorly, we maintain good cooperation relationship with associated companies, and make fast, reliable, legal and stepwise response to our customers.───對外，我們堅持與各關(guān)聯(lián)單位保持良好的合作關(guān)系，重誠信，快速響應與真誠服務(wù)客戶(hù)。

36 、The multiple stepwise regression analysis showed that distinctly positive correlation of CSS associated with the levels of Lp (a), TC/HDL-C, apoB and age, respectively (all P───多元相關(guān)及逐步回歸分析表明,CSS與年齡、Lp(a)、TC/HDL-C、apoB水平呈明顯正相關(guān)(均P

37 、Data were analyzed by using descriptive statistics, chi-square, t-test, Pearson correlation, and stepwise multiple regression.───個(gè)案中只有41人有完全符合三項遵從標準（病人自評、病歷回顧、血中鋰鹽濃度）之遵從行為。

38 、The multiple stepwise regression equation is A vol=122. EB eth+0 72 ? Time 109 5(R 2=0 927, P< 0 001).───將沖洗時(shí)間加入多元分析 ,回歸方程R2 =0 92 7,P

39 、The mutation pattern of silver crucian carp was very complexional, as well as some loci did not follow the Stepwise Mutation Model.───(4) 序列分析表明, 雌核發(fā)育銀鯽的微衛星突變模式并不嚴格遵守逐步突變模型。

40 、Multipal stepwise regression analysis showed that principal influential factors included family relations,marital status,cultural and sports activities,sickness and family structure.───多元逐步回歸分析顯示,家庭關(guān)系、婚姻狀況、文體活動(dòng)、患病情況、家庭結構是離休干部抑郁的主要影響因素。

41 、A stepwise carbochlorination-chemical vapor transport(SC-CVT) technique is proposed for separation of thorium from mixed bastnaesite-monazite concentrate.───以氟碳鈰礦-獨居石混合稀土礦為研究對象,采用分步選擇性碳熱氯化-化學(xué)氣相傳輸反應(SC-CVT),實(shí)現釷與其它稀土元素的分離。

42 、Base on a lot of experimental data the relation between fabrics shear property a nd the parameters of yarn and the structure of fabric are discussed by stepwise -regression method.───在大量實(shí)驗數據的基礎上,運用逐步回歸的方法探討了精紡毛型織物剪切性能與紗線(xiàn)、織物結構參數之間的關(guān)系。

43 、The results from stepwise regression analysis showed that the more diseases one had and the lower score one had on the scale of health promoting lifestyle, ...───健康促進(jìn)生活方式與吸菸-國家圖書(shū)館--全國博碩士論文資訊網(wǎng):查詢(xún)結果

44 、Objective To enhance the yield and product quality of diosgenin extract, the method of stepwise biocatalysis was used.───摘要目的利用階梯生物催化協(xié)同提高提取盾葉薯蕷中薯蕷皂苷元的收率和質(zhì)量。

45 、Acid intensity of hydrosulfuric acid and stepwise ionization balance were discussed by the use of thermodynamic principle, which are helpful to inorganic chemistry teaching.───摘要本文應用熱學(xué)原理對氫硫酸的強度及逐級電離平衡進(jìn)行了討論，有助于無(wú)機化學(xué)教學(xué)和學(xué)生學(xué)習。

46 、Multiple linear stepwise regression analysis revealed that TG and WHR were independently associated with the size of LDL particles.───多元逐步線(xiàn)性回歸分析，得出與LDL顆粒直徑獨立相關(guān)并依次進(jìn)入方程的變量為：甘油三酯和腰臀比。

47 、In mixed weak acid titration, calculation of PH of stoichiometric point, calculation of end point error and stepwise titration criterion are the must specific problems.───在混合弱酸滴定中,化學(xué)計量點(diǎn)時(shí)PH值計算、終點(diǎn)誤差計算,分步滴定判據是三個(gè)必須明確的問(wèn)題,本文對混合弱酸滴定的這三個(gè)問(wèn)題作一探討。

48 、It has been proposed that stepwise progression occurs from atypical adenomatous hyperplasia (AAH) through bronchioloalveolar carcinoma (BAC) to invasive lung adenocarcinoma.───已經(jīng)提出肺的不典型腺瘤樣增生(AAH)到支氣管肺泡癌(BAC)再到侵襲性肺腺癌發(fā)病過(guò)程。

49 、In a stepwise multivariate regression analysis,adjusting for age,significant assoc iation was observed between serum albumin level and IL-6 concentration.───多元回歸分析在矯正了年齡的影響后 ,IL -6是血液透析患者血清白蛋白水平的獨立影響因素。

50 、Five different piezoelectric resonance modes were excited by the stepwise electric field in modified lead zirconate titanate (PZT) ceramic samples.───4.以改性鋯鈦酸鉛陶瓷為例，利用階躍電場(chǎng)對鐵電體材料常用的五種壓電諧振模式進(jìn)行了的激發(fā)。

51 、Analysis of stepwise regression indicated that FEV1/FVC were correlated with exposure parameter.───多因素分析表明，除年齡、身高、吸煙指數外，接觸指數是影響FEV1/FVC的重要因素。

52 、multivariate stepwise regression───多元逐步回歸

53 、Multiple stepwise regression analysis indicated that education manner of parents, L score, flight, fantasy and denial, P score and accompanier pressure entered the equation.───多元逐步回歸分析表明，父母管教方式壓力、L分、逃避、幻想否認、P分、同學(xué)壓力等6個(gè)變量進(jìn)入回歸方程。

54 、In order to overcome this negative water vapour phenomenon, “the method of stepwise cycle reduction” is used to carry out some special treatments for the initial value.───為了克服這一負水汽現象，我們采用了“逐步循環(huán)訂正法”對初值進(jìn)行了一些特別處理。

55 、Four methods dealing with multi-collinearity are introduced, they are Stepwise Regression, Ridge Regression, Principal Component Regression and Partial Least Squares.───多重共線(xiàn)性會(huì )給顧客滿(mǎn)意度線(xiàn)性建模帶來(lái)很大的危害。

56 、A method of stepwise regression analysis on water polluting is discussed with examples of the comprehensive water polluting index.───提出水質(zhì)污染的逐步回歸分析方法,并以年水質(zhì)綜合污染指數為例,對其進(jìn)行逐步回歸分析。

57 、The collected data were analyzed by descriptive statistic, one-way ANOVA, pearson product-moment correlation, Stepwise Multiple Regression Analysis.───所得資料分別以描述統計、單因子變異數分析、積差相關(guān)與多元?歸進(jìn)行分析。

58 、A stepwise discriminant analysis (SDA) and a principal component analysis (PCA) methods were applied, resulting in several reliable quantitative structure-activity relationships (QSAR)-based models.───基于定量構-效關(guān)系(QSAR)方法，采用逐步判別分析和主成分分析建立數學(xué)模型。

59 、We predicted Rf value of phenol and aniline derivatives by this method, and compared it with classical algorithms such as forward selection,backward elimination, and stepwise procedure....───同時(shí)，與前進(jìn)選擇法、后退剔除法和逐步回歸法幾種傳統方法進(jìn)行了比較，得到了有啟示性的結果。

60 、quadratic polynomial stepwise regressionanalysis───二次多項式逐步回歸分析

61 、Most computer programs introduce or delete the dependent variables in a stepwise manner.───大部分計算機程序均以逐級計算方式來(lái)輸入或刪除某些應變量。

62 、The process of producing molybdenum disulfide with natural method has been improved.In the new process,stepwise leaching is substituted for mixed acids leaching.───對天然法生產(chǎn)二硫化鉬的工藝進(jìn)行了研究,提出了以分段浸出代替混合浸出的方案,并進(jìn)行了實(shí)踐。

63 、The data obtained were analyzed by path analysis, multivariate regression analysis, and stepwise regression analysis in terms of the purposes described above.───所得資料，配合上述目的，分別采用徑路分析、多變項復廻歸分析與逐步廻歸分析三種方法統計處理。

64 、dynamic stepwise cluster analysis───動(dòng)態(tài)逐步聚類(lèi)

65 、The stepwise regress technology was applied to analyze the factors after virtualization of status variables.───將狀態(tài)變量轉化成虛擬變量后，運用逐步回歸技術(shù)進(jìn)行因素的回歸分析。

66 、Via the stepwise discrimnant analysis, crown dieback is found to be the most important variable.If one wants to keep the hit rat over 90%, one can use 6 original observed variables.───使用逐步鑑別分析，發(fā)現樹(shù)冠梢枯為最重要的變數，而將調查變數縮減為6個(gè)仍保有90%以上的擊中率。

67 、By stepwise multilinear regression analysis, SDT and SDR were the most important determinant of PAWP(r=0.72)，EDR and SF%(r=0.78).───對二尖瓣和肺靜脈血流參數聯(lián)系地進(jìn)行多元回歸分析時(shí)，發(fā)現EDR、SF%與PAWP顯著(zhù)相關(guān)(r=0.78)。

68 、However, The stepwise multivariate regression analyses showed that DNA, religion, DNP and economic status contributed 15% of the variance in DNK.───影響K的因素依順序為飲食營(yíng)養態(tài)度、宗教、飲食營(yíng)養行為與經(jīng)濟狀況，共解釋K變異量的15%。

69 、Under the catalysis of sodium hydroxide solution,TBA epoxy resin was prepared by stepwise polymerization by use of tetrabromobisphenol A(TBA) and epichlorohydrin(ECH).───TBA與環(huán)氧氯丙烷(EHC)在氫氧化鈉溶液的作用下,通過(guò)逐步聚合得到TBA型環(huán)氧樹(shù)脂;

70 、Stepwise discriminant analysis was performed to obtain risk factors of CAA based on clinical and early laboratory data.───我們先以單變數統計方法來(lái)檢驗十六個(gè)臨床和實(shí)驗變數，發(fā)現在兩群中只有白血球和C-反應蛋白質(zhì)具有統計上之顯著(zhù)差異。

71 、The results of application of PPR model to the precipitation prediction in three regions are better than that of stepwise regression for fitting and prediction.───在三個(gè)地區應用PPR進(jìn)行降水量預測建模、模型的擬合及預留預測檢驗結果均好于逐步回歸建模的相應結果。

72 、Strong and Weak Acid Mixture of Stepwise Titration───一元強酸與弱酸的分步滴定

73 、A neural classifier based on stepwise correlative component analysis, named SCCA-HBP, for classifying the quality pattern of Chinese Medicinal Materials (CMM) is proposed.───摘要提出并構建了一種基于分步相關(guān)成分分析的神經(jīng)元分類(lèi)器(SCCA-HBP)，并將其用于中藥材質(zhì)量模式分類(lèi)。

74 、In the coarsest scale, a stepwise elimination scheme is introduced, the Edge Dilatation Template (EDT) is presented and some methods are introduced to reduce the calculation.───在最小尺度上，采用了逐步剔除的策略，提出了邊緣膨脹模板(EDT)，并推導了快速算法；

75 、The uniariate chi-square test and stepwise logistic regression were used to predict the prealence of cure progression, and a receier operating characteristic cure was plotted.───應用單變量卡方檢驗和逐步邏輯回歸來(lái)預測側凸進(jìn)展的發(fā)生率，繪制受試者工作特征曲線(xiàn)。

76 、This paper describes the principle, and stepwise development of FADS, summarizes current focuses of research, and presents some expectations of future development of FADS.───在介紹了嵌入式大氣數據傳感系統原理及技術(shù)發(fā)展的基礎上，總結了當前開(kāi)展的各項研究工作的熱點(diǎn)并對嵌入式大氣數據傳感未來(lái)發(fā)展趨勢進(jìn)行了展望。

77 、The dynamic partition and stepwise optimization methods are researched in iterate computation.These revise methods may accelerate astringency and enhance veracity.───提出了迭代計算過(guò)程中的動(dòng)態(tài)劃分、逐步優(yōu)化方法,這些修正方法的使用可加快計算收斂性和提高計算準確性。

78 、A stepwise nonlinear fitting procedure was proposed to nonlinear fitting equations that uses Marquardt nonlinear fitting analysis and stepwise linear regression alternatively.───對于非線(xiàn)性函數線(xiàn)性組合型相關(guān)方程，本文提出了交替運用非線(xiàn)性擬合和逐步線(xiàn)性回歸分析相結合的方法一逐步非線(xiàn)性擬合。

79 、stepwise countercurrent extraction───分段逆流抽提

80 、In this study, we pick fifty-six variables and use stepwise to choose the best explainable variables in theses three models.And the variables picked must be the best ones which fit Taiwan.───在本研究中，我們采用56項財務(wù)比率進(jìn)行逐步迴歸，來(lái)做進(jìn)一步的挑選，挑選最適合臺灣市場(chǎng)的財務(wù)比率變數。

YBl是什么意思？

YBl意思是坎貝爾里弗;

例句

The fluorescence spectra of four Rydberg series of Ybl have been obtained using laser stepwise excitation in atomic beam.

千萬(wàn)條記錄怎么選擇數據挖掘模型？

可以先看一下數據缺失（missing）狀況、（某些變量）的分布，然后看一下相關(guān)關(guān)系，最后建模。

題主給出的條件比較少，只提供了數據量（記錄數），尚未給出其他信息。但碰到一批新的數據時(shí)，

（1）去除某些變量嚴重缺失的數據記錄后，可以先看一下數據的分布狀況，可以先看一下某幾個(gè)感覺(jué)重要的變量的分布狀況（頻率分布圖，或者Kernel density estimation），python 的pandas和seaborn （如seaborn.distplot()）都可以簡(jiǎn)單的實(shí)現。若想看一下數據整體的分布狀況，可以通過(guò)PCA或MDS找到那些異常值（偏離大部分記錄的數據點(diǎn)）。

（2）進(jìn)行了簡(jiǎn)單的數據清洗與查看了大體分布后，可以定性的探究一下不同變量間的相關(guān)關(guān)系（可看做定性分析）。

seaborn.heatmap()

可簡(jiǎn)單實(shí)現， 如下圖。

(3) 進(jìn)行了上述分析后，然后可以通過(guò)stepwise 線(xiàn)性回歸或者廣義可加性模型等“傳統模型”建模，預測目標變量或者通過(guò)樸素貝葉斯，支持向量機，kNN等方法構建分類(lèi)模型，若這些模型精度比較差，不能達到滿(mǎn)意的效果，可以構建人工神經(jīng)網(wǎng)絡(luò )（簡(jiǎn)單的如多層感知器MLP）來(lái)進(jìn)行建模。

上述三步為大體的挖掘步驟，清洗與分布-相關(guān)（定性）-建模（定量），且每一步都可生成若干個(gè)分析圖表或報告。