AUTHOR=Zhang Xiaodong TITLE=Improving Pigai as an Automated Writing Evaluation System: Considerations for Refinement JOURNAL=Frontiers in Psychology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2022.795725 DOI=10.3389/fpsyg.2022.795725 ISSN=1664-1078