比較估計法 的英文怎麼說
中文拼音 [bǐjiàogūjìfǎ]
比較估計法
英文
comparative estimating method- 比 : Ⅰ動詞1 (比較; 較量高下、 長短、距離、好壞等) compare; compete; contrast; match; emulate 2 (比...
- 較 : Ⅰ動詞1 (比較) compare 2 [書面語] (計較) dispute Ⅱ副詞(比較) comparatively; relatively; fair...
- 估 : 估構詞成分。
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 法 : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...
- 比較 : 1 (對比) compare; compare with; contrast; parallel (with); comparison; by comparison; in comp...
- 估計 : estimate; evaluate; take stock of; size up; calculate; appraise; reckon; estimation; forecast
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Focused on the application of the generalized cross correlation ( gcc ) time delay estimation ( tde ) in the car microphone array denoising system, gcc tde algorithm is analyzed theoretically and compared with high rank cumulation tde
摘要針對汽車環境中麥克風陣列語音去噪系統的應用,對廣義相關時延估計方法進行了模擬,並與基於高階累積量的時延估計方法作了比較分析。The simulation results show that the proposed algorithm can accomplish the multilevel group formation in real time with lower calculation complexity, and better performance can be achieved in the situation assessment for space group formation
模擬結果表明,所提演算法能實時完成多個級別的空間合群融合,其計算復雜度也比較低,而且在空間合群的態勢評估中獲得了比較好的結果。Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value
同時,由於poisson分佈的特性,我們知道不存在其參數區間長度小於0 . 5的置信區間,基於這些情況,我們主要展開了以下兩個方面的研究:一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間, wald置信區間, bayes置信區間等進行分析比較,發現了一些缺陷,針對這些缺陷,我們進行適當的修正,並得到幾種性質較好的置信區間如:修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度,我們提出了一種漸近的兩階段區間估計程序,並利用數值計算的方法,在各種置信系數與區間長度限定下,算出了最優的第一階段觀測次數(抽樣量) ,大量數據表明,本文考慮的方法性態良好,具有應用價值。In chapter3, we discuss the multiplicate progressive stresses accelerated life test. under the weibull distribution and an invers power law model we first present a necessary and sufficient condition for the existence and uniqueness of mle for the exponential distribution, then give estimators and confidence intervals of the parameters based on the blue. finally, we study them by using monte - carlo simulation
第三章首先指出了一組序進應力加速壽命試驗下weibull分佈分佈參數的mle不唯一,然後給出了p組序進應力加速壽命試驗下指數分佈的mle存在和唯一的一個充要條件,並用隨機模擬的方法研究比較了參數估計的優良性,最後給出了p組序進應力加速壽命試驗下weibull分佈中參數的點估計和區間估計,討論了有關問題,給出模擬實例。With the rapid development of the security stock market especially the stock market in chian , issuing stock and circulating on market became the first choice of financing for more and more enterprise at the same time , more and more investors are attracted by the relately high initial return of stock however , the problem of ipos underpricing always exists in the stock market according to the data of more than one thousand chinese stocks , most new issues had great raise in the first trade day , and investors could acquire higher initial return than the average return of the stock market or the same industry we find that initial returns on a - share ipos average reached 132. 24 percent the main body of this paper is made up of six sections : in the first part , we introduced the method of the estimate of pricing decision ; in the second part , we analyzed the method of the pricing decision and issuing system in china , discussed the advantage and weakness of the various issuing methods , and compared the economic efficiency between the examine and approve system and authorization system ; in the third part , we analyzed the reason of ipo ' s underpricing in detail from information economics and other factors and combined with the environment of the chinese stock markets , we analyzed the special characteristics in china and how they effect the ipo ' s underpricing in the fourth part , we analyzed the data of chinese stock market with spss , made a analysis of the administrative pricing decision and market pricing decision , studied the underpricing phenomena of chinese stock market , and analyzed it ' s causes ; in the fifth part , we made a analysis of the examine approve system and authorization system ; and in the last part , we drew some conclusions and put forth some policy advices the follow are the conclusions and policy advices in this dissertation : ( 1 ) from the results of this empirical study , we found that the issuing price - earning ratio and the market situation before ipos are strongly and positively associated with the underpricing of shares , the issuing scale of ipo and the hit rate are strongly and negatively associated with the underpricing ; ( 2 ) we found that after the abolishing of ipo ' s p / e ratio and the using of authorization system , there is no significant difference among the underpricing of shares , but considered with the market entironment , we think that the ipo ' s underpricing has been correspondingly reduced ( 3 ) to reduce difference between the primary market and the second market , we suggested that we shall bring the " over - allotment option ( oao ) " to bear and resume the state - owned share and corporate - owned share to circulate on market as soon possible
本文的主體由六個部分組成:第一部分介紹新股發行定價的估值方法;第二部分對我國的發行定價方式和發行制度進行分析,探討不同發行定價方式的優缺點,以及審批制和核準制經濟效率分析;第三部分從信息經濟學角度和其他因素的角度詳細分析造成新股發行抑價的原因,並結合我國股票市場實際情況,分析了我國市場的特有因素是否及如何影響一級市場的發行抑價程度的;第四部分利用統計分析軟體spss對我國新股行政化和市場化定價進行實證分析,主要包括新股發行行政化和市場化定價方式的實施情況和效果分析、新股發行行政化定價方式的實證分析,以及新股發行行政化和市場化定價方式的比較實證分析;第五部分利用統計分析軟體spss對我國新股發行審批制和核準制進行實證分析;第六部分是本論文的主要結論。本文的主要結論和建議有: ( 1 )從實證分析結果看,我國新股發行抑價與市場環境、發行市盈率呈顯著正向關系,與發行規模、申購中簽率等呈顯著反向關系。 ( 2 )取消發行市盈率限制和實施核準制等市場化改革措施並沒有降低發行抑價的絕對水平,只是由於市場環境的因素,發行抑價的相對水平才有所降低。All of above presents the data to study the algorithm which will be used to detect the targets against the broadened bragg lines. eigenstucture - based algorithms are used to realize bearing resolution on the basis of synthetically comparing several classical algorithms. first sea echo ’ s bearing prior knowledge is utilized to constitute project operator to constraint the noise subspace estimation with the use of constrained music algorithms, which largely increases the resolution and doa estimated accuracy
為檢測海上目標的方位信息,在綜合分析比較各類演算法的基礎上,本文採用特徵結構類演算法來實現空間方位分辨中的constrainedmusic演算法,此方法充分利用了海浪的方位先驗信息來構造投影運算元約束噪聲子空間的估計,大大提高了目標解析度和估計精度。Chapter 4 designs and determines the parameters of the algorithm adopted in the instrument system. analyzes and compares the different effects to frequency estimation when using digital filters with different group delay ; determines the data length, a parameter of frequency estimation ; introduces the method of available judgment of sensing signal and determines the judgment threshold as well
第四章設計和確定了儀器系統軟體演算法的部分參數:分析和比較了不同群延遲特性的數字濾波器對頻率估計的影響;確定了影響頻率估計參數?數據長度的取值規律;給出了判斷傳感信號有效性的檢測方法並確定了檢測門限的取值規律。The content of the study as follow : 1 to choice the ship form, mainly ship ' s overall size ; draft, according to design of shanghai deep - water port and development of container ; 2. to deside the date of width ; depth ; path ; tract and sinkage through simulator tests ; 3. to replenish and modify some date for channel design to very large container vessels in " design code of general layout for sea port " 4. to study ship ' s turning area ; ship ' s stop distance the new and special content of the study as follow : 1. statistics of path at the channel given by difference operators with the affections certain wind. currents. seas and other influences shows the path really needed under certain condition
並可在各類航道和水域的通航安全評估及操船方法,航跡帶寬度,航道寬度,航跡帶分佈,船舶各種航行狀態時的下沉量研究中應用。本課題研究的內容: ( 1 )根據洋山深水港設計規劃和集裝箱船舶的發展趨勢,通過研究、分析、比較,選擇最合適的船型,尤其是船舶主尺度和船舶吃水。 ( 2 )在大量模擬研究情況下,得出進港航道所需的航道寬度和深度。In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively
本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討,取得以下主要成果:一、結合小灣工程導流洞改建,對高水頭( 252m ) 、大泄流量( 1400m ~ 3 s )條件下旋流式豎井中的水流運動特徵進行了比較全面的測量,包括空腔形態、徑向流速分佈及井壁壓強等;二、提出了豎井空腔段螺旋水流水力計算方法,其計算結果與實測值吻合良好;三、利用試驗與計算結果,對旋流式豎井的消能機理進行了探討,對豎井各部分的消能能力有了總體認識;四、對豎井下部消力井的合理井深進行了優化試驗研究,發現消力井合理深度為0 . 9d左右;五、通過試驗研究,歸納出豎井水流總摻氣量估算方法,為導流洞排氣方案的設計提供了參考依據;六、在高水頭、大流量條件下,豎井空腔段下部流速很高,盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓,但空化數依然較低,因此豎井的空化空蝕始終是工程界關注的重大問題。The author interviewed self - employed married women in the flower production industry to examine differences in estimates of unpaid labor time between time diaries and direct questions
本文以已婚花農婦女為例,分別比較時間日誌與兩種直接詢問法,在估計無酬勞力時間的差異。( 2 ) a new synchronization method based on barker code is designed which is simple, effective for uwb system. ( 3 ) a new channel estimation method based on music algorithm is given, which is compared with ml algorthim. and the effection is proved by
( 3 )採用數學公式推導出基於music演算法的通道估計的理論公式,得出了模擬結果,將其與較為成熟的ml演算法比較,並在實測數據中加以驗證。From the result we get the following conclusion : for narrow - band signal, the effect of the method based on fft is best. for wide - band signal, when snr is up to certain degree ( higher than - 7db or so ), the curves of square error of modified methods are more obvious and closer to crb. for an echo composed of more than one frequency or direction, space - frequency distribution could show more direct information of frequency and direction, which is more advantaged to make precise judge and estimation for doa of echo
從估計結果發現,對于窄帶回波信號,基於fft的方法估計性能大大優于其他方法;對于寬帶回波信號,在信噪比達到一定程度(高於約- 7db )時,補償后的幾種估計法的性能改善均比較明顯,誤差曲線越來越接近crb曲線;對于回波中存在多頻率多方位的情況,空間?頻率分布圖能提供較為直觀的頻率及方位信息,因此應用空間?頻率估計法來進行方位估計,更有利於進一步對回波的具體方位進行準確判斷和估計。Secondly, it was. made theoretical analyses about the optimal training sequence design by the maximum likelihood estimation method and obtained the corresponding results, which were compared with the separate results derived by the minimum mean square error ( mmse ) estimation method in the other literature. at last, it was analyzed the impac
其次進行了採用最大似然( ml )估計法的最佳訓練序列設計的理論分析,分別得到了有關結果,並和其他文獻中採用最小均方誤差( mmse )估計法的設計結果進行了分析比較,得到了有關結論。After an intensive analysis of several methods of computing the orientation image, we select the " least square estimate " method in our research
我們對多種求解指紋圖像方向圖的方法進行了深入的分析與比較,並最終選定了「最小平方估計法」作為我們求解指紋圖像方向圖的方法。First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by brewer, durbin, sampford, des raj, murthy, rao - hartley - cochran. then, at the basis of rao and bayless ' s study, we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super - populations, and compare the stabilities of estimators of the methods that given above. we find that the minor difference between two super - populations has great effect on the efficiency of the estimators for the population with moderately large coefficient of variation ( c. v. )
本文首先從理論上介紹了若干種不等概率抽樣方法,它們的估計量、估計量的方差及其估計,其中包括有放回ppz及pps抽樣,不放回不等概率抽樣中的brewer 、 durbin 、 sampford 、 desraj , murthy 、 rao - hartley - cochran等人的方法;其次,在rao和bayless兩人就樣本單元數n = 2的情形對上述抽樣方法進行比較的基礎上,將總體隨機地分成兩個子總體,視每個子總體取自不同的線性超總體,在文中,我們利用計算機實現隨機分組,並通過畫圖比較各方法估計量的穩定性,結果表明,對變異系數c . v . ( x )較大的總體而言,兩個超總體之間的微小差異將對估計量的穩定性產生很大的影響,從而說明rao和bayless的比較結果還不夠完善。A way to track project progress by comparing original plan estimates against actual progress
通過比較估計的計劃進度與實際進度對項目進度進行跟蹤的方法。By analyzing the design principle, the paper devised an image source signal alternated with black and white strip and it has a good effect. meanwhile, the system demand of imaging link was analyzed, such as light source, lens and camera etc. in addition, the principles of both the correlation algorithm and generalized correlation time delay estimation based on adaptive technology were studied, and a comparison between them was made as well
本文中分析了圖像源信號的設計原則,並設計了一種黑白相間的傾斜條紋圖案作為圖像源信號,獲得了良好的測量效果;分析了測量系統對光源、鏡頭、相機等成像環節的要求;研究了相關演算法和基於自適應技術的廣義相關時延估計法兩種數據處理演算法的原理,並對兩種方法的性能進行了比較。Computers, 1996, 45 : 319 - 327. 16 wang c c. an algorithm to design finite field multipliers using a self - dual normal basis. ieee trans
以晶體管數來評估電路的面積,與傳統的雙重基底乘法相比較,設計的乘法器可以省65 %電路設計面積。The research indicates that the new method not only contains the super performance of original bayesian high - resolution method but also significantly reduces the computation quantity from 0 ( lk ) to 0 ( kxjxns ). and the new method can be successfully extended to the case of multiple sources
進行了新方法、原貝葉斯高分辨方位估計方法與多重信號特徵法( music )和極大似然估計法( mle )的性能比較研究,揭示了新方法的優越性。Some related res ults have been acquired after comparing these cdf with the theoretical capacity. in the fourth chapter, it was at first estimated all the channel coefficients by maximum likelihood estimation and minimum mean square error estimation method on the basis of the construction of the transmission frame and the mathematical model for the wireless mtmo system of channel estimation with training sequence
第四章首先基於訓練序列估計的無線mimo傳輸幀結構和數學模型,分別使用最小均方誤差估計法和最大似然估計法估計出了通道的各個系數,在小信噪比和大信噪比時,比較了兩種估計方法的估計誤差的方差。分享友人