prior information 中文意思是什麼

prior information 解釋
初始信息
  • prior : n 普賴爾〈姓氏〉。adj 1 〈用作前置定[修飾]語〉在前的；優先的。2 〈與 to 連用〉在…之前 （opp post ...
  • information : n. 1. 通知，通報，報告。2. 報導，消息，情報。3. 資料，知識，學識。4. 【自動化】信息，數據。5. 【法律】起訴，告發。adj. -al
  1. Because of the shortage of prior information in the blind restoration processing, the result of restoration is usually not satisfactory. ringing effect is one of the important factors that influence restoration image quality

    由於圖像盲復原過程中先驗信息的不足，往往造成復原圖像質量不盡如人意，振鈴效應就是影響復原圖像質量的重要因素之一。
  2. For a general linear model ( input matrix is deterministic ), under a certain conditions on variance matrix invertibility, the two estimates can be identical provided that they have the same priori information on the parameter under estimation. even if the above information is unknown only for the optimally weighted ls estimate, the sufficient condition and necessary condition, under which the two estimates are identical, is derived. more significantly, we know how to design input of the linear system to make the performance of the optimally weighted ls estimation identical to that of the linear minimum variance estimation in case of being lack of prior information

    在一般線性模型（即輸入矩陣為確定性）下，當兩種估計都利用有關被估參數的先驗信息時，二者在方差陣可逆的一定條件下可達到一致；當最優加權最小二乘估計不利用此先驗信息時，存在二者一致的充分條件和必要條件，進而找到一種設計輸入矩陣的方法，使得在先驗信息缺乏的條件下，仍可利用最優加權最小二乘估計達到與線性最小方差估計一樣優越的估計性能。
  3. The thesis mainly recounts the detail questions about bayesian small sample theory and the important applications of the theory in engineering, and gives sufficient analyses and discussion of every step of accomplishing a precision evaluation when using small samples. in the thesis, the following issues are contained, such as how to get and denote the prior information, the consistence test of prior information and test samples of shooting range, the fusion of multi - source information, calculating of posterior probability, estimation with bayesian approach, how to constitute test evaluation project of different performance and calculate the risks of both sides are contained, and at last a kind of applied method to calculate the effectiveness is given

    論文主要敘述了有關bayes小樣本理論的一些具體問題，以及該技術在工程中的一些關鍵應用，對小樣本條件下精度鑒定的各個環節給予較充分的分析和討論，其中包括驗前信息的獲取、表示，驗前信息和靶場試驗樣本的一致性檢驗，多源信息的融合，驗后概率的計算， bayes方法在估計中的應用，試驗鑒定方案的制定，對不同戰標的評估方法和風險的計算等，最後對作戰效能的計算給出了一種工程中較實用的方法。
  4. Comparing with non - bnyain methods, it ' s prominent featares lay in that it combines the prior and posterior information, which avoids the disadvantag of subjective bias caused by simply using the prior information only, of blind search caused by the incomplete sample information, of noise affection caused by simply using the sample information only if we choice a suitable priof, we can conduct the bayesian leaming effectively, so it fits the problems of data mining and machine leaming that possess charaters of probability and statistics, especially when the samples are rare

    與非貝葉揚方法相比，貝葉斯方法的特出特點是其學習機制可以綜合先驗信息和后驗信息，既可避免只使用先驗信息可能帶來的主觀偏見，和缺乏樣本信息時的大量盲目搜索與計算，也可避免只使用樣本信息帶來的噪音的影響只要合理地確定先驗，就可以進行有效的學習。因此，適用於具有概率統計特徵的數據採掘和機器學習（或發現）問題，尤其是樣本難得的問題
  5. In the second chapter, we explicate the theoretical knowledge, bayes statistic approach, which be applied in the paper, we show the definition of the prior distribution and how to select the prior information, we show the relation of prior distribution, conditional distribution and posterior distribution, we also show statistical inference approach and the key of how to use bayes statistic approach

    第二部分內容是本文應用理論知識的簡要闡述，介紹了貝葉斯統計方法的理論，分別說明了先驗信息的定義及如何獲取，后驗分佈、條件分佈和先驗分佈三者關系，統計推斷方法及貝葉斯統計方法應用的關鍵。第三部分內容是對坦克射擊學中外彈道學的修正理論作了簡要的介紹。
  6. Besides, in case that the prior information about channel environment is unknown, in order to fuse location results obtained by different location algorithms to get more accurate and reliable location results, two location fusion methods which depend on the location results weighted by location distance residual are proposed, the feasibility of this algorithm fusion methods are demonstrated by simulation under two environment conditions

    此外，還提出了兩種通過定位距離殘差對定位結果進行加權的演算法融合方法，以期在通道環境先驗信息未知時通過對不同演算法定位結果的融合，取得更準確可靠的定位結果；通過對兩種環境條件下的模擬，驗證了這兩種演算法融合方法的可行性。
  7. The fusion method for prior distribution in multi - sources of prior information

    多源驗前信息下先驗分佈的融合方法
  8. In order to reduce the testing number, using various prior information has become indispensable, especially for the information of simulation and the special trajectory

    由於試驗數的減少，對各類驗前信息的利用已勢在必行，尤其是對模擬信息、特殊彈道信息的融合運用。
  9. Finally, combined with the reliability and maintainability problem of xx missile system, the validity of above methods and the superiority of index verification method based on multi - source prior information have been proved

    最後，結合xx導彈武器系統的可靠性與維修性指標驗證問題，說明了上述方法的有效性和基於多源驗前信息的指標驗證方法的優越性。
  10. It studies the determination of population distribution, information fusion of multiple sources based on evidence theory, the consistency of prior information relative to field test information and the robustness of prior distribution

    就其中的總體分佈的確定、多源驗前信息融合問題、驗前信息與現場信息的一致性問題以及驗前分佈的穩健性進行了研究。
  11. The purpose of this paper is to make full use of multi - source prior information about military weapon to verify index of reliability and maintainability with small sample size of locale test and non - descending of index verification results

    其目的是在現場試驗為小樣本的情況下，充分利用武器裝備的多源驗前信息，在不降低指標驗證結果可信度的前提下，對可靠性與維修性（ r & m ）指標進行驗證。
  12. First, this paper investigates traditional method and bayesian approach of the assessment of system reliability, including the equivalent method of complicated system, the reliability assessment of multiple components, prior information conversion

    首先，本文研究了了可靠性評估的經典方法和bayes方法，包括復雜系統的可靠性等效方法，多種類型單元可靠性評估方法，驗前信息的摺合。
  13. In this paper, the methods of reliability and maintainability index verification for weapon system with small sample size are studied, which is under the ground of the project named reliability and maintainability index verification method based on multi - source prior information

    本文從工程的角度出發，以「基於多源驗前信息的可靠性與維修性指標驗證方法研究」課題為背景，對小子樣條件下武器裝備的可靠性與維修性指標驗證方法進行了深入研究。
  14. The emphasis of bayesian approach is how to obtain and use the prior information, especially, the simulation information. the modeling methods and technical approach of creating the virtual samples are partly discussed and the methods of programming are given. it ' s very important for the prior information to have a consistence test

    Bayes方法重點是關于驗前信息的獲取和利用問題，尤其是對模擬信息的獲取和利用，文中對模擬虛擬樣本的建模方法和技術途徑作了部分討論，並給出軟體實現的具體方法。
  15. The definition of the maximum likelihood estimator with the prior information ( pmle ) is given in this paper, and the consistency and asymptotic normality of pmle are proved

    摘要定義了有先驗信息的極大似然估計，它能夠充分利用參數的先驗信息，還具有正規條件下的相合性和漸近正態性。
  16. We first propose an improved local edge detector to detect road elements from sar images. by introducing prior information of road network, we can organize the local line fragment into useful line structure with directional potential function

    首先利用一種改進的sar圖像局部線特徵檢測運算元獲得公路段基元，然後引入關于公路特徵的先驗知識，利用方向勢能函數將局部線特徵組織成較大線性結構。
  17. Consequencely, the analysis and assessment system of the operating state of the concrete dam was developed under the ansys development environment, and the back - analysis and the prediction of the parameters of the dam system have been done according to the operating observed data. the research work involves several aspects as follows : 1 ) a back - analysis model including the prior information and a predictive model of nonlinear time series were established ; 2 ) the analysis and assessment system of the operating state of the concrete dam was developed under the ansys development environment, in which the analysis module of the loading effects, the back - analysis module, the forecasting module of the physical parameters and the assessment module of the operating state were contained ; 3 ) according to the operating observed data, the operating state of the dam was assessed and predicted with the analysis system of the operating state, the results suggested that the dam is in basically normal operation at present

    具體工作有以下幾方面： 1 ）收集整理漫灣水電站大壩運行監測資料，並對其進行了系統分析，從觀測資料本身直觀的分析了大壩的運行狀況； 2 ）總結位移反分析的理論及方法，建立了考慮先驗信息多介質位移反分析模型，基於神經網路非線性映射功能，建立了神經網路時間序列預測模型； 3 ）以ansys軟體為平臺，開發了漫灣水電站砼重力壩運行狀態評價模塊，結合荷載效應分析、參數反演分析、參數預測分析三個模塊組成漫灣水電站砼重力壩運行狀態分析系統；實現了對漫灣水電站運行狀態的動態「反演-預測」分析； 4 ）利用漫灣水電站砼重力壩運行狀態分析系統，在漫灣大壩實測資料分析、大壩砼特性參數反分析、大壩砼彈性模量衰變規律及預測分析的基礎上，系統的分析並預測了大壩運行狀態。
  18. Further, based on the method of pre - elimination of parameters, the formulae of the partly - weigthed least squares estimation with constraints on parts of the parameters are derived to include a prior information

    在顧及電離層加權模型的情況下，利用參數消去法，推導了加權最小二乘法估計模糊度實數解的公式。
  19. Blind source separation ( bss ) problem is to separate or extract individual source signal from a set of mixed signals, assuming the source signals are independent and no a - prior information is known about the mixed signals

    盲源分離問題是從某類混合信號序列中分離或提取出各個未知源信號的過程，其中假設源信號是相互統計獨立的，人們對混合信號的信息完全未知。
  20. At the same time, the previous global estimate of failure probability can serve as additional prior information to yield the overall calibrated probability

    同時，先前估計的全局破壞概率，能夠用作額外的先驗信息，來給出全部校準的破壞概率。
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