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在第三章中我們假設(shè)概率密度函數(shù)的參數(shù)形式已知,于是可以使用訓(xùn)練樣本來估計(jì)概率密度函數(shù)的參數(shù)值.在本章中,我們將直接假定判別函數(shù)的參數(shù)形式已知,而用訓(xùn)練的方法來估計(jì)判別函數(shù)的參數(shù)值.我們將介紹求解判別函數(shù)的各種算法,其中一部分基于統(tǒng)計(jì)方法,而另一些不是.這里都不要求知道有關(guān)的概率密度函數(shù)的確切的(參數(shù))形式,..
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1078億元,廣告經(jīng)營單位10萬戶,廣告從業(yè)人員87萬人。中國廣告業(yè)以近40%的平均年增長速度,成為全球廣告業(yè)增長最快的廣告市場一(DATA from http://www.people.com.cn/GB/14677/21966/36358/2774892.html)。但相對(duì)于西方成熟的廣告行業(yè),中國的廣告業(yè)還處于發(fā)展的初級(jí)階段,廣告作品缺乏創(chuàng)意,廣告的表現(xiàn)手法傳統(tǒng)、羅..
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環(huán)境新聞?dòng)幸幌盗邢嚓P(guān)涵義,我們可以將它理解為鼓吹性倡導(dǎo)性新聞,或帶有目的性的報(bào)道,也可以概括地將環(huán)境新聞理解為關(guān)于環(huán)境的新聞。 不同時(shí)期環(huán)境新聞定義也不相同。環(huán)境新聞的內(nèi)容由傳統(tǒng)的環(huán)境保護(hù)轉(zhuǎn)向現(xiàn)代的和污染相關(guān)的內(nèi)容,由原來只關(guān)注地球自然環(huán)境或環(huán)境危機(jī)向關(guān)注所有生命健康轉(zhuǎn)變。 關(guān)于環(huán)境新聞,..
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Brushless DC MotorAtef Saleh Othman Al-MashakbehDepartment of Electrical Engineering Tafila Technical UniversityP.O. Box 179, Tafila – JordanAbstractBrushless DC (BLDC) motors are one of the electrical drives that are rapidly gaining popularity, due to their high efficiency, good dynamic respon..
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摘要:統(tǒng)計(jì)學(xué)和數(shù)據(jù)挖掘有很多共同點(diǎn),但與此同時(shí)它們也有很多差異。本文討論了兩門學(xué)科的性質(zhì),重點(diǎn)論述它們的異同。關(guān)鍵詞:統(tǒng)計(jì)學(xué) 知識(shí)發(fā)現(xiàn)1. 簡介統(tǒng)計(jì)學(xué)和數(shù)據(jù)挖掘有著共同的目標(biāo):發(fā)現(xiàn)數(shù)據(jù)中的結(jié)構(gòu)。事實(shí)上,由于它們的目標(biāo)相似,一些人(尤其是統(tǒng)計(jì)學(xué)家)認(rèn)為數(shù)據(jù)挖掘是統(tǒng)計(jì)學(xué)的分支。這是一個(gè)不切合實(shí)際的看法。..
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Historical perspective The development of numerical control owes much to the United States air force,which recognized the need to develop more efficient manufacturing methods for modern aircraft. Following World War II, the components used to fabricate jet aircraft became more complex and requir..
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ABSTRACT The modern technologies of computers, networks, and sensors have made data collection and organization an almost effortless task. However, the captured data needs to be converted into information and knowledge from recorded data to become useful. Data mining is the entire process of appl..
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例如:房地產(chǎn)相結(jié)合的市場調(diào)研則是一種全新的研究方法,為房地產(chǎn)開發(fā)定位提供相關(guān)的依據(jù)。研究人員通過最精確的數(shù)據(jù)分析,利用往年最典型的案例。緊密聯(lián)系當(dāng)前市場。對(duì)項(xiàng)目的發(fā)展前景做出有建設(shè)性的預(yù)測。并對(duì)項(xiàng)目整體做出最科學(xué)的判斷!以文檔的形式展現(xiàn)在讀者面前!報(bào)告的結(jié)構(gòu)體系 如何將調(diào)研結(jié)果清晰明了的表現(xiàn)出來..
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When the market falls, Apple shares usually fall further. Investors should brace for the worst if the broader market continues its decline. For as long as I can remember, Apple (AAPL) has been a slave to the direction of the broader market despite its unusually strong fundamentals. Whenever t..