Secondly , a solution based on the theory of function approximation is proposed to select the key parameter of neural network 其次,在神經(jīng)網(wǎng)絡(luò)關(guān)鍵參數(shù)選擇問(wèn)題上,提出了一種基于函數(shù)逼近思想選擇網(wǎng)絡(luò)參數(shù)的方法。
The research of multiple - valued logic includes many aspects . two of its most important parts are completeness theory of function sets , decision and construction for sheffer functions 多值邏輯的研究?jī)?nèi)容有很多,函數(shù)系的完備性判定、 sheffer函數(shù)的構(gòu)造與判定是其中的重要組成部分。
By studying the history , the reality and the experience of the domestic and the international urbanization , by analyzing the advantages and the problems of ningxia urbanizing development , by applying the theory of economic spatial structure modification , and the theory of growth centers , also the theory of function - region integration , the paper proposes the idea that " one core and three grades " and " the three regions and four grades " as its improving strategy 通過(guò)分析國(guó)際、國(guó)內(nèi)城鎮(zhèn)化發(fā)展的歷史、現(xiàn)狀和經(jīng)驗(yàn),應(yīng)用經(jīng)濟(jì)空間結(jié)構(gòu)優(yōu)化理論、增長(zhǎng)極理論和職能地域一體化理論,重點(diǎn)對(duì)寧夏農(nóng)村城鎮(zhèn)化發(fā)展的條件、問(wèn)題和趨勢(shì)進(jìn)行了分析和展望,提出了寧夏城鎮(zhèn)化發(fā)展“一核三級(jí)”的構(gòu)想和“三個(gè)空間、四個(gè)層次”的推進(jìn)策略。
Cfd is also used to get the data of performance parameters of the nozzle at different nozzle pressure ratio , different nozzle area ratio and different geometric defected angle . the theory of function approximation is used to establish the transient model of thrust vectoring with the data calculated 本文通過(guò)cfd計(jì)算獲得矢量噴管的性能參數(shù),如流量系數(shù)、推力系數(shù)以及有效推力矢量角等與矢量噴管壓比、面積比以及幾何偏轉(zhuǎn)角之間的關(guān)系數(shù)據(jù),并利用函數(shù)逼近理論建立了矢量噴管的動(dòng)態(tài)數(shù)學(xué)模型。
In multiple - valued logic theory , completeness theory of function sets is an important and fundamental problem , it is also the problem which must be solved in automata theory and multiple - valued logic network . the solution of this problem depends on determining all the precomplete classes in multiple - valued logic function sets 函數(shù)系的完備性判定問(wèn)題是多值邏輯理論中基本而重要的問(wèn)題,同時(shí)也是自動(dòng)機(jī)理論,多值邏輯網(wǎng)絡(luò)中必須解決的問(wèn)題,此問(wèn)題的解決依賴(lài)于定出多值邏輯函數(shù)集中的所有極大封閉集(準(zhǔn)完備集) 。