!!! Constructional Diversity Analyzer (CDA)
https://haerimhwang.github.io/tools/English-constructional-diversity-analyzer
!出典
Hwang, H., & Kim, H. (2022). Automatic analysis of constructional diversity as a predictor of EFL students’ writing proficiency. Applied linguistics. (online first)

Hwang, H., Choe, A., & Zenker, F. (2020). Construction Counter: A tool to measure (nonnative) language development. Brown Bag Series, University of Hawai‘i at Mānoa, Honolulu, USA. (April 16)


!spaCyとKivyを使用

+Natural Language Toolkit (Bird et al. 2009)のsent_tokenizeで文ごとに区切る
+spaCy (Honnibal and Montani 2019)で、節に分割
++token.lemma_でレマ化
++token.pos_で品詞タグ付け
++token_dep_で統語依存関係タグ付け

!分析手順
+11種類の構文に分類
+構文の延べ頻度（節の数と同じ）を計算
+構文の異なり頻度を計算（構文多様性）
+各構文の頻度と割合を計算
+各構文内の動詞の異なり頻度を計算（動詞多様性）

!11の構文
*6は構文文法より（Goldberg 1995）
++使役移動  : She faxed a letter to him.
++二重目的語: She faxed him a letter.
++自動詞移動: The fly buzzed into the room.
++自動詞結果: The pond froze solid.
++句動詞    : The girl looked the name up.
++他動詞結果: The girl made the can flat.
*5は基礎的
++叙述      : She is a student.
++受け身    : It was folded.
++単純自動詞: I worked.
++単純他動詞: The man kicked the ball.
++存在のthere: There is a house.