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レベルにあったProject Gutenberg洋書
を探せるウェブサイト
Readability Squareについて
Ver. 0.1a
--
By mackayst
http://readability.mackayst.com/
このスライドの内容
• 読みやすい英文とは?
• 比較的読みやすいProject Gutenberg短編
• Readability Squareの使い方
– 語彙数測定・カタログ閲覧など

• リーダビリティ解析とは?
• Readability Squareの特徴
どんな英文が読みやすい?
• 主要な要素として二つ
– 語彙の難しさ
– センテンスの長さ

• このうち語彙の難しさがより克服しにくい
比較的読みやすい
Project Gutenberg短編(1/3)
• 語彙サイズ5000(-99%が頻出5000語)
– Franz Kafka (David Wyllie), Metamorphosis
• カフカ『変身』

• 語彙サイズ6000
– Henrik Ibsen, A Doll's House
• ヘンリク・イプセン『人形の家』

– Ayn Rand, Anthem
• アイン・ランド『アンセム』

– Frances Hodgson Burnett, Barty Crusoe and His Man
Saturday
– Madeline Brandeis, Little Philippe of Belgium
比較的読みやすい
Project Gutenberg短編(2/3)
• 語彙サイズ7000(1/2)
– L. Frank Baum, The Wonderful Wizard of Oz
• ライマン・フランク・ボーム『オズの魔法使い』

– Bertrand Russell, Political Ideals
• バートランド・ラッセル『政治の理想』

– graf Leo Tolstoy (Aylmer Maude), What Men Live By and
Other Tales
• レフ・トルストイ『人はなんで生きるか』

– Plato (Benjamin Jowett), Meno
• プラトン『メノン』

– Hugh Lofting, The Story of Doctor Dolittle
• ヒュー・ロフティング『ドリトル先生アフリカゆき』
比較的読みやすい
Project Gutenberg短編(3/3)
• 語彙サイズ7000(2/2)
– Henrik Ibsen (Edmund Gosse), Hedda Gabler
• ヘンリク・イプセン『ヘッダ・ガーブレル』

– Henrik Ibsen (William Archer), Ghosts
• ヘンリク・イプセン『幽霊』

– Oscar Wilde, An Ideal Husband
• オスカー・ワイルド『理想の夫』

– Henry James, The Beast in the Jungle
• ヘンリー・ジェイムズ『ジャングルの猛獣』

–
–
–
–
–

Edward R. Shaw, Discoverers and Explorers
Wesley Frank Craven, The Virginia Company Of London, 1606-1624
John Goodwin, Email 101
Sydney Grundy, The New Woman An Original Comedy, In Four Acts
Charles Donagh Maginnis, Pen Drawing An Illustrated Treatise
どの名作が自分のレベル?
•
•
•
•
•

語彙サイズ13000
語彙サイズ10000
語彙サイズ8000
語彙サイズ9000
語彙サイズ8000
Sherlock Holmes

William Shakespeare, Hamlet
Jonathan Swift, Gulliver’s Travels
Jane Austen, Pride and Prejudice
Oscar Wilde, The Picture of Dorian Gray
Sir Arthur Conan Doyle, Adventures of

Readability Squareにて、語彙サイズを測定し
語彙難度・時代・語数(ページ数)などから
選定できます
Readability Squareのトップページ
http://readability.mackayst.com/

まず語彙サイズを測ります
語彙サイズ測定

既知語をチェックすると
語彙サイズが表示されます

語彙サイズを測定しましたら
カタログを見ます
・語彙サイズ
語彙サイズが99%で5000と表示されている本は、語彙サイズ5000
までの単語で99%の単語が占められていると解釈します。
99%が既知語であるテキストは丁度良いレベルとされています。
・時代(生年/死亡年)
古い本ほど難しい傾向があります
・センテンスの長さ
一つのセンテンスの長さが長いほど難しい傾向があります
・ページ数

カタログー洋書の探し方
ソートの方法

タイトルバーのクリックにより
ソートできます
作家/タイトル等でサーチする方法
語彙サイズを入力すればその
語彙サイズ以下の本を表示で
きます。
11000ならば11000以下の本が
表示できます。

Dickensの本を探したい場合:
dickensと入力しSearchボタン
をクリックします
最後にもう一つ

ウェブサイトが選んだおすす
め(毎回変わります)をtweet
できます!
リーダビリティ解析(1/2)
• 文章の難しさをコンピューターにより解析
• 既存のリーダビリティ解析手法
– 語彙の難易度と文の長さを合成
– 推奨学年にあわせた結果
• 例:Fog index 10.0 - 10年生(高校1年生)に適している

– 代表的なリーダビリティ公式
• Gunning Fog
• Flesch Reading Ease
• Flesch-Kincaid Grade Level
リーダビリティ解析(2/2)
• 語彙の難易度をどう測定?
– Gunning Fog/Flesch Reading Ease/Flesch-Kincaid
Grade Level/Fry/ Power-Sumner-Kearl/FORCAST
• シラブルの数

– Coleman-Liau/ARI
• 単語一つに含まれる文字数

– Dale-Chall/Spache
• 指定語彙リストに含まれているか

– Readability Square(本サイト)
• 語彙の一般的な利用頻度
本サイトの特徴
既存の手法

本サイト
センテンスの長さ

センテンスの長さ

語彙の難しさ
(直接的)

語彙の難しさ
(間接的)

• Readability Square
– 語彙の難しさを直接的に評価
– 各指標を独立に表示

時代

ページ数
Thank you very much!
By mackayst
http://readability.mackayst.com/

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レベルにあったProject Gutenberg洋書を探せるウェブサイト Readability Squareについて Ver. 0.1a