ﾌﾞﾘﾀﾆｶ百科事典の第14版は､1936年から毎年記事の改訂が行なわれていたということですが､Claude E. Shannonが書いたInformation Theoryが､何年の版から何年の版まで掲載されていたのかを知る方法はあるでしょうか｡IEEEのClaude Shannon Collected Papersには､1968年版が採録されていますが､その年だけだったのか､それとも前後の年にも掲載されていたのか､また､そもそもｼｬﾉﾝはそれをいつ執筆したのか､を知りたいのです｡Google Booksからの検索ですが
書名｢Encyclopædia Britannica｣､ﾌﾚｰｽﾞ｢Information Theory｣を含む検索結果
書名｢Encyclopædia Britannica｣､ﾌﾚｰｽﾞ｢Claude E. Shannon｣を含む検索結果
となり｢Information Theory｣の記述は1961年の版
｢Claude E. Shannon｣の名前が含まれるのは1968年以降となっているようです｡
Google Books上で全ての版を確認できるのかは未確認ですが
大学図書館の蔵書なども含まれているようで
ﾈｯﾄ上で多くの版を確認できる手段の一つではないかと思っています｡
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[追記]
書名｢Encyclopædia Britannica｣､ﾌﾚｰｽﾞ｢Information Theory｣と｢Claude E. Shannon｣を含む検索結果]
両ﾌﾚｰｽﾞで検索すれば良かったですね＞＜
1963年､1987年､1993年､2002年の版が両ﾌﾚｰｽﾞを含む版としてひっかかりました｡
ありがとうございます｡さすが！と感動したのですが､よくよく考えてみると､その検索では､Claude E.Shannon と Information Theoryがともに掲載されている版がひっかかるものの､その記事の著者がShannonかどうかはわからないのではないでしょうか｡
ちなみに冒頭はこんな感じなのですが､これが掲載されている版を特定できるでしょうか｡
Information Theory
(Reprinted with permission from Encyclopedia Britannica, 14th edition, © 1968 by Encyclopedia Britannica, Inc.)
Claude E. Shannon
One of the most prominent features of 20th-century is the development and exploitation of new communication mediums. Concurrent with the growth of devices for transmitting and processing information, a unifying theory was developed and became the subject of intensive research.
This theory, known as communication theory, or, in its broader applications, information theory, is concerned with the discovery of mathematical laws governing systems designed to communicate or manipulate information. It sets up quantitative measures of information and of the capacity of various systems to transmit, store and otherwise process information.
Some of the problems treated relate to finding the best methods of utilizing various available communication systems, the best methods of separating signals from noise and the problem of setting upper bounds on what it is possible to do with a given channel. While the central results are chiefly of interest to communication engineers, some of the concepts have been adopted and found useful in such fields as psychology and linguistics.
Information is interpreted in its broadest sense to include the messages occurring in any of the standard communication mediums such as telegraphy, radio or television, the signals involved in electronic computing machines, servomechanisms systems and other data-processing devices, and even the signals appearing in the nerve networks of animals and man. The signals or messages need not be meaningful in any ordinary sense. This theory, then, is quite different from classical communication engineering theory which deals with the devices employed but not with that which is communicated.
Central Problems of Communication Theory. The type of communication system that has been most extensively investigated is shown in Fig.1. It consists of the following:
1. An information source which produces the raw information or “message” to be transmitted.
2. A transmitter which transforms or encodes this information into a form suitable for the channel. This transformed message is called the signal.
3. The channel on which encoded the information or signal is transmitted to the receiving point. During transmission the signal may be changed or distorted. In radio, for example, there often is static, and in television transmission so-called “snow.” These disturbing effects are known generally as noise, and are indicated schematically in Fig. 1 by the noise source.
4. The receiver, which decodes or translates the received signal back into the original message or an approximation of it.
5. The destination or intended recipient of the information.
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migrantblacky ●50ﾎﾟｲﾝﾄ  ﾍﾞｽﾄｱﾝｻｰ |
1963年版のEncyclopædia Britannica: a new survey of universal knowledge,第12巻の350ﾍﾟｰｼﾞの記述
One of the most prominent features of 20th-century technology is the development and exploitation of new communication mediums.
Concurrent with the growth of devices for transmitting and processing information, a unifying theory was developed and became the subject of intensive research.
This theory, known as communication theory, or, in its broader applications, information theory, is concerned with the discovery of mathematical laws governing systems designed to communicate or manipulate information. It sets up quantitative measures of information and of the capacity of various systems to transmit, store and otherwise process information.
Some of the problems treated relate to finding the best methods of utilizing various available communication systems, the best methods of separating signals from noise and the problem of setting upper bounds on what it is possible to do with a given channel. While the central results are chiefly of interest to communication engineers, some of the concepts have been adopted and found useful in such fields as psychology and linguistics.
Information is interpreted in its broadest sense to include the messages occurring in any of the standard communication mediums such as telegraphy, radio or television, the signals involved in electronic computing machines, servomechanism systems and other data-processing devices, and even the signals appearing in the nerve networks of animals and man. The signals or messages need not be meaningful in any ordinary sense. This theory, then, is quite different from classical communication engineering theory, which deals with the devices employed but not with that which is communicated.
Central Problems of Communication Theory. — The type of communication system that has been most extensively investigated is shown in fig. 1 . It consists of the following :
1. An information source which produces the raw information or "message" to be transmitted.
2. A transmitter which transforms or encodes this information into a form suitable for the channel. This transformed message is called the signal.
3. The channel on which the encoded information or signal is transmitted to the receiving point. During transmission the signal may be changed or distorted. In radio, for example, there often is static, and in television transmission so-called "snow." These disturbing effects are known generally as noise, and are indicated schematically in fig. : by the noise source.
4. The receiver, which decodes or translates the received signal back into the original message or an approximation of it.
5. The destination or intended recipient of the information.
(※図が挿入)
FIG. 1. — DIAGRAM OF GENERAL COMMUNICATION STSTEM
It will be seen that this system is sufficiently general to include a wide variety of communication problems if the various elements are suitably interpreted. In radio, for example,(...続く)
ただこの1963年版の第12巻上にはClaude E. Shannonの記名は確認できません｡
⇒ 検索にかからず
しかし同じ1963年版のEncyclopædia Britannica: a new survey of universal knowledge,第24巻にClaude E. Shannonの名前が検索ﾋｯﾄ｡
⇒ (Google Books上でのﾌﾟﾚﾋﾞｭｰはできないようです｡)
推測ですが1963年版では第24巻が最終巻で奥付のような場所に執筆者一覧のような形で掲載されているのではと考えました｡
調べてみたところ1963年版の第24巻は最終巻で23巻までの目次､寄稿家の一覧と位置づけられているようです｡
1963年版の『INFORMATION THEORY』の項はClaude E. Shannon執筆と見て良いのではないかと思います｡
またGoogle Books上で確認の取れる最も古い版は1963年版ということになります｡
※Google Books上で1987年版と1993年版のInformation Theoryの項の構造がよく似ていることが
確認できました｡ただし言い回しがちょこちょこ違うようです｡
まことにありがとうございました｡
検索で可能なのはここまでのようですね｡
しかし1968年版としてIEEEが出版している記事が､1963年版でも掲載されていることがわかったことは､とても重要です｡
なぜならば､言語学者の鈴木孝夫先生が『閉された言語･日本語の世界』の中で､英語の重複性(redundancy)が大きいということについて触れておられるのですが､鈴木先生は何を読まれたのかを書いていません｡
しかし､同じ本の別のところで､1963年版のﾌﾞﾘﾀﾆｶが身近にあるということを書いておられるので､ｼｬﾉﾝの｢情報理論｣の記事をお読みになっておられたことが想像できます｡
鈴木先生は､ｼｬﾉﾝをよく理解しないまま(本来であれば批判すべき対象として読むべき文章ですが､それをしないまま)､考え方を借りてきて本の中で考え方を紹介されたのだと思います｡
ありがとうございました｡
