!!! 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

+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）