随机森林原理及应用.pdf

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៤೒⠛ሩ⼎ߎᴹ˅ㄝDŽԚخㄪᷥއ䖛⿟↨䕗ᖿ䗳ˈ῵ൟᆍᯧሩ⼎˄ᆍᯧᇚᕫࠄⱘ
ᰃৠᯊˈऩއㄪᷥজ᳝ϔѯϡདⱘഄᮍˈ↨བ䇈ᆍᯧ over-fittingˈ㱑✊᳝ϔ
ѯᮍ⊩ˈབ࠾ᵱৃҹޣᇥ䖭⾡ᚙމˈԚᰃ䖬ᰃϡ໳ⱘDŽ
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䖭ѯㅫ⊩᳔㒜ⱘ㒧ᵰᰃ⫳៤ N(ৃ㛑Ӯ᳝޴ⱒỉҹϞ˅ỉᷥˈ䖭ḋৃҹ໻໻ⱘޣ
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޴ⱒỉއㄪᷥЁⱘ↣ϔỉ䛑ᕜㅔऩ˄ⳌᇍѢ ⾡ऩއㄪᷥᴹ䇈˅ԚᰃҪӀ
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໻ᇣԚ৘ϡⳌৠⱘ䆁㒗䲚ˈ䖯㗠䆁㒗ߎϡৠⱘ෎ᴀߚ㉏఼DŽBagging ㅫ⊩བ೒㸼
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Baggingᰃ෎Ѣᇍ䆁㒗䲚䖯㸠໘⧚ⱘ䲚៤ᮍ⊩Ё᳔ㅔऩǃ᳔Ⳉ㾖ⱘϔ⾡