王輝
摘 要 本文主要采用了模糊識(shí)別的方法對(duì)不同課程的成績(jī)之間的相互影響程度進(jìn)行了計(jì)算,為同學(xué)們?nèi)绾我哉_地態(tài)度面對(duì)學(xué)習(xí)提供了建議。
關(guān)鍵詞 專業(yè)課 基礎(chǔ)課 均衡 知識(shí)系統(tǒng) 相關(guān)關(guān)系
中圖分類號(hào):G642.4 文獻(xiàn)標(biāo)識(shí)碼:A
在高校學(xué)生學(xué)習(xí)過程中,有時(shí)會(huì)存在著這種情況:有的同學(xué)只關(guān)注專業(yè)課,不重視基礎(chǔ)課程,認(rèn)為及格就行;同時(shí)又有一些同學(xué)由于在中學(xué)階段成績(jī)比較好,所以保留了偏愛一些基礎(chǔ)課程的習(xí)慣,專業(yè)課成績(jī)相對(duì)較差。作為教師,我們主張同學(xué)們?cè)趯W(xué)習(xí)時(shí)間和精力允許的條件下盡可能的均衡發(fā)展自己,做到一專多能。事實(shí)上,很多課程之間都存在著相輔相成的關(guān)系,過于偏科對(duì)于學(xué)生整個(gè)知識(shí)系統(tǒng)的建立是不利的。下面將以本校某班學(xué)生學(xué)習(xí)成績(jī)?yōu)橹笜?biāo)利用相關(guān)關(guān)系進(jìn)行評(píng)價(jià)。
說明:(1)事實(shí)上,在這一個(gè)學(xué)期里考察班級(jí)所開課程還有英語、體育和政治,本文主要討論數(shù)學(xué)課程與專業(yè)課程以及專業(yè)課程之間的相關(guān)關(guān)系,所以在上表中略去了這三門的成績(jī)。(2)由于本班學(xué)生較多,所以按學(xué)號(hào)選取了前15名同學(xué)的數(shù)據(jù)作為研究對(duì)象。
兩個(gè)模糊集、之間的接近程度可以用貼近度函數(shù)來描述,
距離貼近度:。
下面通過計(jì)算選取的15位同學(xué)對(duì)應(yīng)的5門課程成績(jī)指標(biāo)之間的貼近程度來分析各門課程評(píng)價(jià)指標(biāo)之間的相關(guān)程度的大小。首先,15位同學(xué)對(duì)應(yīng)的5個(gè)課程評(píng)價(jià)指標(biāo)的相對(duì)隸屬度值經(jīng)過歸一化處理后得到:
(數(shù)學(xué)成績(jī))=(0.067,0.062,0.070,0.066,0.073,0.071,0.076,0.060,0.069,0.062,0.066,0.068,0.074,0.052,0.064)
(CAD成績(jī))=(0.070,0.071,0.060,0.067,0.074,0.073,0.074,0.036,0.032,0.070,0.075,0.070,0.080,0.072,0.076)
(電工成績(jī))=(0.061,0.067,0.067,0.065,0.069,0.071,0.072,0.060,0.070,0.070,0.065,0.065,0.072,0.065,0.058)
(計(jì)算機(jī)文化基礎(chǔ)成績(jī))=(0.076,0.056,0.056,0.057,0.070,0.073,0.082,0.055,0.055,0.074,0.073,0.073,0.077,0.058,0.064)
(機(jī)械制圖成績(jī))=(0.062,0.064,0.064,0.064,0.070,0.069,0.089,0.053,0.051,0.065,0.070,0.062,0.089,0.067,0.063)
計(jì)算結(jié)果見表2。
由擇近原則可知,模糊集與模糊集,模糊集與模糊集,模糊集與模糊集,模糊集與模糊集,模糊集與模糊集都很貼近,其中以模糊集與模糊集最為貼近??梢哉J(rèn)為貼近的兩個(gè)模糊集具有緊密的相關(guān)關(guān)系。從數(shù)據(jù)可以看出:數(shù)學(xué)課作為基礎(chǔ)課與多門課程都有密切的相關(guān)關(guān)系,學(xué)好數(shù)學(xué)課程與學(xué)好其他課程有直接的聯(lián)系。特別是電工課,雖然看似與數(shù)學(xué)關(guān)系不大,但從數(shù)據(jù)分析結(jié)果來看兩者卻非常緊密,從中可以看出學(xué)好數(shù)學(xué)明顯的提高了同學(xué)的分析、理解和邏輯能力,從而間接的幫助了專業(yè)課的學(xué)習(xí);另一方面,在專業(yè)課的學(xué)習(xí)過程中也會(huì)用到基礎(chǔ)課的知識(shí),這種實(shí)踐會(huì)促進(jìn)基礎(chǔ)課程知識(shí)的吸收和升華。另外電工和機(jī)械制圖評(píng)價(jià)指標(biāo)貼近度也較高,可以看出這兩門專業(yè)課的學(xué)習(xí)有著相輔相成的關(guān)系。
參考文獻(xiàn)
[1] 劉合香.模糊數(shù)學(xué)理論及其應(yīng)用[M].北京:科學(xué)出版社,2012.
[2] 羅承忠.模糊集引論(上下冊(cè))[M].北京:北京師范大學(xué)出版社,1989.