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The New York State Identification and Intelligence System Phonetic Code, commonly known as NYSIIS, is a phonetic algorithm devised in 1970 as part of the New York State Identification and Intelligence System (now a part of the New York State Division of Criminal Justice Services). It features an accuracy increase of 2.7% over the traditional Soundex algorithm.〔 〕 ==Procedure== The algorithm, as described in ''Name Search Techniques'',〔 〕 is: #Translate first characters of name: MAC → MCC, KN → N, K → C, PH, PF → FF, SCH → SSS #Translate last characters of name: EE → Y, IE → Y, DT, RT, RD, NT, ND → D #First character of key = first character of name. #Translate remaining characters by following rules, incrementing by one character each time: ##EV → AF else A, E, I, O, U → A ##Q → G, Z → S, M → N ##KN → N else K → C ##SCH → SSS, PH → FF ##H → If previous or next is non-vowel, previous. ##W → If previous is vowel, A. ##Add current to key if current is not same as the last key character. #If last character is S, remove it. #If last characters are AY, replace with Y. #If last character is A, remove it. #Append translated key to value from step 3 (removed first character) #If longer than 6 characters, truncate to first 6 characters. (only needed for true NYSIIS, some versions use the full key) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「New York State Identification and Intelligence System」の詳細全文を読む スポンサード リンク
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