句法复杂度的测量指标多样且人为选择片面,不系统;没有自动分析工具的支持。句法复杂度分析器:研发过程,设计原理,主要功能。有些软件的功能会局限研究思维。以计算语言学为知识背景。‘Second language development in writing: Measures of fluency, accuracy & complexity’by Wolfe-Quintero, Inagaki and Kim,没有提到工具,指标有矛盾。Lourdes Ortega (2003) Syntactic complexity measures adn their relationship to L2 proficiency: A rserach synthesis of college-level L2 writing. Applied linguistics 24(4): 492-518. 最重要的是选取指标:1。指标大汇总(文献综述); 2,在指标大汇总的基础上进行精选;3. 通过数据验证,最终确定保留哪些指标。期刊投稿意见为拆分成1. 介绍工具; 2. 实证研究。Xiaofei Lu (2010). Automatic analysis of syntactic complexity in second langauge writing. International Journal of Corpus Lingusitics., 15(4). Lu (2011) A corpus-based evaluation of syntactic complexity measures as indices of college-level ESL writers' language development. TESOL Quarterly 45(1). 后续发展了多种界面。分析网址为:http://www.personal.psu.edu/xx113/download/12sca.html.???
Coh-Metrix目的是评价连贯性,指标更多。且没有系统性地被评估过。