Gí-bó pîn-lu̍t

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語母 (Gí-bó)頻率 (pîn-lu̍t) (jī-bó pîn-lu̍t; 英語 (Eng-gí): letter frequency， frequency of letters， character frequencies) 指 (tsí)的 (ê)是 (sī)逐 (ta̍k)个 (ê)語母咧 (teh)本文 (pún-bûn)材料 (tsâi-liāu)中 (tiong)出現 (tshut-hiān)的頻率。 Tiāñ-tiāñ予人應用 (ìng-iōng)咧密碼學 (bi̍t-bé-ha̍k)，尤其 (iû-kî)是會使 (ē-sái)破解 (phuà--kái)古典 (kóo-tián)密碼 (bi̍t-má)的頻率分析 (hun-sik)。而 (Lî)tshiáñ咧英語 (Ing-gí)中tiāñ-tiāñ khuàñ-kìñ的語母就 (tiō)是 "e"。咧活版 (ua̍h-pán)印刷 (ìn-suat)時代 (sî-tāi)，有人 (ū-lâng)已經 (í-king)根據 (kun-kù)經驗 (king-giām)咧Linotype排語 (pâi-gí)機 (ki)頂懸 (tíng-kuân)，對 (uì)語母按 (án)用 (iōng)的次數 (tshù-sòo)排 (pâi)liẻt成 (sîng)eatoin shrdlu vbgkjq xz。也有 (Iá-ū)，摩斯 (Môo-su)電碼 (tiān-má)中tiāñ-tiāñ用的語母，伊的 (i-ê)pen碼 (má)語母就 (tō)愈 (lú)短 (té); 而tshiáñ發出 (huat-tshut)去 (khì)逐个語母使用 (sú-iōng)時 (sî)，對緊 (kín)到 (kàu)萬 (bān)的順序 (sūn-sū)是e it san hurdm wgvlfbk opjxcz jyq.[1] 數據 (Sòo-kì)壓縮 (ah-sok)中嘛有 (mā-ū)相 (sio)siâng的方法 (hong-huat)，如果 (lû-kó)Huffman編碼 (pian-má)就是按來源 (lâi-guân)符號 (hû-hō)出現的機率 (ki-lu̍t)大小 (tuā-sió)去編碼。

註解 (Tsù-kái)[修改]

  1. ↑ American Morse code was developed in the 1830s by Alfred Vail, based on English-language letter frequencies, to encode the most frequent letters with the shortest symbols. Some efficiency was lost in the reformed version now used: the International Morse Code. (英語)

參考 (Tsham-khó)文 (bûn)hèn[修改]

  • Mayzner, M.S。; Tresselt, M.E。 (1965). "Tables of single-letter and digram frequency counts for various word-length and letter-position combinations". Psychonomic Monograph Supplements. 1 (2): 13–32. OCLC 639975358. 
  • Mayzner, M.S。; Tresselt, M.E.;Wolin， B.< R.< (1965). "Tables of trigram frequency counts for various word-length and letter-position combinations". Psychonomic Monograph Supplements. 1 (3): 33–78. 
  • Mayzner, M.S。; Tresselt, M.E.;Woliin， B.< R,.。 (1965). "Tables of tetragram frequency counts for various word-length and letter-position combinations". Psychonomic Monograph Supplements. 1 (4): 79–143. 
  • Mayzner, M.S。; Tresselt, M.E.Wolin， B,.< R.> (1965). "Tables of pentagram frequency counts for various word-length and letter-position combinations". Psychonomic Monograph Supplements. 1 (5): 144–190. 

參閱 (Tsham-ua̍t)[修改]

外部 (Guā-pōo)lên-ket[修改]

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