A Revised Algorithm for Latent Semantic Analysis. - Xiangen Hu; Zhiqiang Cai 002; Max M. Louwerse; Andrew Olney; Phanni Penumatsa; Arthur C. Graesser (IJCAI, 2003)

Combining Computational Models of Short Essay Grading for Conceptual Physics Problems. - Matthew Ventura; D. R. Franchescetti; P. Pennumatsa; Arthur C. Graesser; G. Tanner Jackson; Xiangen Hu; Zhiqiang Cai 002 (Intelligent Tutoring Systems, 2004)

Automatic evaluation of aspects of document quality. - David F. Dufty; Danielle S. McNamara; Max M. Louwerse; Zhiqiang Cai 002; Arthur C. Graesser (SIGDOC, 2004)

The Embodiment of Amodal Symbolic Knowledge Representations. - Max M. Louwerse; Zhiqiang Cai 002; Xiangen Hu; Matthew Ventura; Patrick Jeuniaux (FLAIRS, 2005)

An Orthonormal Basis for Entailment. - Andrew Olney; Zhiqiang Cai 002 (FLAIRS, 2005)

An Orthonormal Basis for Topic Segmentation in Tutorial Dialogue. - Andrew Olney; Zhiqiang Cai 002 (HLT/EMNLP, 2005)

Cognitively Inspired Nlp-based Knowledge Representations: Further Explorations of Latent Semantic Analysis. - Max M. Louwerse; Zhiqiang Cai 002; Xiangen Hu; Matthew Ventura; Patrick Jeuniaux (Int. J. Artif. Intell. Tools, 2006)

The Right Threshold Value: What Is the Right Threshold of Cosine Measure When Using Latent Semantic Analysis for Evaluating Student Answers? - Phanni Penumatsa; Matthew Ventura; Arthur C. Graesser; Max M. Louwerse; Xiangen Hu; Zhiqiang Cai 002; Donald R. Franceschetti (Int. J. Artif. Intell. Tools, 2006)

Experiments on Generating Questions About Facts. - Vasile Rus; Zhiqiang Cai 002; Arthur C. Graesser (CICLing, 2007)

MetaTutor: Analyzing Self-Regulated Learning in a Tutoring System for Biology. - Roger Azevedo; Amy M. Witherspoon; Arthur C. Graesser; Danielle S. McNamara; Amber Chauncey; Emily Siler; Zhiqiang Cai 002; Vasile Rus; Mihai C. Lintean (AIED, 2009)

ARIES: An Intelligent Tutoring System Assisted by Conversational Agents. - Zhiqiang Cai 002; Arthur C. Graesser; Keith K. Millis; Diane F. Halpern; Patricia S. Wallace; Cristian Moldovan; Carol Forsyth (AIED, 2009)

AutoTutor Lite. - Xiangen Hu; Zhiqiang Cai 002; Lu Han; Scotty D. Craig; Tianjiang Wang; Arthur C. Graesser (AIED, 2009)

Metatutor: An adaptive system for fostering self-regulated learning. - Mihai C. Lintean; Amy M. Witherspoon; Zhiqiang Cai 002; Roger Azevedo (AIED, 2009)

Operation ARIES!: A Computerized Game for Teaching Scientific Inquiry. - Patricia S. Wallace; Arthur C. Graesser; Keith K. Millis; Diane F. Halpern; Zhiqiang Cai 002; Mary Anne Britt; Joseph Magliano; Katja Wiemer (AIED, 2009)

Learners' exploratory behavior within MetaTutor. - Amy M. Witherspoon; Roger Azevedo; Zhiqiang Cai 002 (AIED, 2009)

Synthesis and Analysis in Artificial Intelligence: The Role of Theory in Agent Implementation. - Roxanne B. Raine; Rieks op den Akker; Zhiqiang Cai 002; Arthur C. Graesser; Danielle S. McNamara (DASC, 2009)

Computational Replication of Human Paraphrase Assessment. - Philip M. McCarthy; Zhiqiang Cai 002; Danielle S. McNamara (FLAIRS, 2009)

The Role of Prompting and Feedback in Facilitating Students' Learning about Science with MetaTutor. - Roger Azevedo; Amy Johnson; Candice Burkett; Amber Chauncey; Mihai C. Lintean; Zhiqiang Cai 002; Vasile Rus (AAAI Fall Symposium: Cognitive and Metacognitive Educational Systems, 2010)

Deciphering the complex nature of log-file data collected during self-regulated learning with MetaTutor. - Roger Azevedo; Amy M. Witherspoon; Amber Chauncey; Mihai C. Lintean; Zhiqiang Cai 002; Vasile Rus; Arthur C. Graesser (ICLS, 2010)

Critiquing Media Reports with Flawed Scientific Findings: Operation ARIES! A Game with Animated Agents and Natural Language Trialogues. - Arthur C. Graesser; Mary Anne Britt; Keith K. Millis; Patty Wallace; Diane F. Halpern; Zhiqiang Cai 002; Kris Kopp; Carol Forsyth (Intelligent Tutoring Systems (2), 2010)

OperationARIES!: Aliens, Spies and Research Methods. - Carol Forsyth; Arthur C. Graesser; Keith K. Millis; Zhiqiang Cai 002; Diane F. Halpern (ACII (2), 2011)

Simulating Human Ratings on Word Concreteness. - Shi Feng; Zhiqiang Cai 002; Scott A. Crossley; Danielle S. McNamara (FLAIRS, 2011)

Internal Usability Testing of Automated Essay Feedback in an Intelligent Writing Tutor. - Rod D. Roscoe; Laura K. Varner; Zhiqiang Cai 002; Jennifer L. Weston; Scott A. Crossley; Danielle S. McNamara (FLAIRS, 2011)

The Chinese Route Argument: Predicting the Longitude and Latitude of Cities in China and the Middle East Using Statistical Linguistic Frequencies. - Max M. Louwerse; Sterling Hutchinson; Zhiqiang Cai 002 (CogSci, 2012)

Learning Gains for Core Concepts in a Serious Game on Scientific Reasoning. - Carol Forsyth; Philip I. Pavlik Jr.; Arthur C. Graesser; Zhiqiang Cai 002; Mae-Lynn Germany; Keith K. Millis; Heather Butler; Diane F. Halpern; Robert P. Dolan (EDM, 2012)

Syntagmatic, Paradigmatic, and Automatic N-Gram Approaches to Assessing Essay Quality. - Scott A. Crossley; Zhiqiang Cai 002; Danielle S. McNamara (FLAIRS, 2012)

A Comparative Study on English and Chinese Word Uses with LIWC. - Haiying Li; Zhiqiang Cai 002; Arthur C. Graesser; Ying Duan (FLAIRS, 2012)

Accuracy of Tracking Student's Natural Language in Operation ARIES!, A Serious Game for Scientific Methods. - Zhiqiang Cai 002; Carol Forsyth; Mae-Lynn Germany; Arthur C. Graesser; Keith K. Millis (ITS, 2012)

AutoTutor 2013: Conversation-Based Online Intelligent Tutoring System with Rich Media (Interactive Event). - Qinyu Cheng; Keli Cheng; Haiying Li; Zhiqiang Cai 002; Xiangen Hu; Arthur C. Graesser (AIED, 2013)

AutoMentor: Artificial Intelligent Mentor in Educational Game. - Jin Wang; Haiying Li; Zhiqiang Cai 002; Fazel Keshtkar; Arthur C. Graesser; David Williamson Shaffer (AIED, 2013)

Component Model in Discourse Analysis. - Haiying Li; Arthur C. Graesser; Zhiqiang Cai 002 (EDM, 2013)

Comparing Two Measures for Formality. - Haiying Li; Zhiqiang Cai 002; Arthur C. Graesser (FLAIRS, 2013)

Comparison of Google Translation with Human Translation. - Haiying Li; Arthur C. Graesser; Zhiqiang Cai 002 (FLAIRS, 2014)

Moody Agents: Affect and Discourse During Learning in a Serious Game. - Carol M. Forsyth; Arthur C. Graesser; Andrew McGregor Olney; Keith K. Millis; Breya Walker; Zhiqiang Cai 002 (AIED, 2015)

Improving Classification of Natural Language Answers to ITS Questions with Item-Specific Supervised Learning. - Benjamin D. Nye; Mustafa H. Hajeer; Zhiqiang Cai 002 (FLAIRS, 2015)

Can Word Probabilities from LDA be Simply Added up to Represent Documents? - Zhiqiang Cai 002; Haiying Li; Xiangen Hu; Art Graesser (EDM, 2016)

How Good Is Popularity? Summary Grading in Crowdsourcing. - Haiying Li; Zhiqiang Cai 002; Arthur C. Graesser (EDM, 2016)

Using Virtual Agents and Interactive Media to Create an ElectronixTutor for the Office of Naval Research. - Whitney O. Baer; Qinyu Cheng; Cadarrius McGlown; Yan Gong; Zhiqiang Cai 002; Arthur C. Graesser (IVA, 2016)

Using Virtual Agents to Deliver Lessons in Reading Comprehension to Struggling Adult Learners. - Whitney O. Baer; Qinyu Cheng; Cadarrius McGlown; Yan Gong; Zhiqiang Cai 002; Arthur C. Graesser (IVA, 2016)

Making AutoTutor Agents Smarter: AutoTutor Answer Clustering and Iterative Script Authoring. - Zhiqiang Cai 002; Yan Gong; Qizhi Qiu; Xiangen Hu; Art Graesser (IVA, 2016)

An Empirical Study on Academic Commentary and Its Implications on Reading and Writing. - Tai Wang; Xiangen Hu; Keith T. Shubeck; Zhiqiang Cai 002; Jie Tang 001 (CoRR, 2016)

Language and Discourse Analysis with Coh-Metrix: Applications from Educational Material to Learning Environments at Scale. - Nia M. Dowell; Arthur C. Graesser; Zhiqiang Cai 002 (J. Learn. Anal., 2016)

Interactive Score Reporting: An AutoTutor-Based System for Teachers. - Carol M. Forsyth; Stephanie Peters; Diego Zapata-Rivera; Jennifer Lentini; Art Graesser; Zhiqiang Cai 002 (AIED, 2017)

The Effect of CSAL AutoTutor on Deep Comprehension of Text in Low-Literacy Adult Readers. - Anne Lippert; Breya Walker; Raven Davis; Qinyu Cheng; Zhiqiang Cai 002; Danielle N. Clewley; Genghu Shi; Arthur C. Graesser (CogSci, 2017)

Predicting Future Performance in an ITS system via Gradient Boosting Classification. - Breya Walker; Anne Lippert; Raven Davis; Zhiqiang Cai 002; Qinyu Cheng; Genghu Shi; Arthur C. Graesser (CogSci, 2017)

Epistemic Network Analysis and Topic Modeling for Chat Data from Collaborative Learning Environment. - Zhiqiang Cai 002; Brendan R. Eagan; Nia Dowell; James W. Pennebaker; Arthur C. Graesser; David W. Shaffer (EDM, 2017)

Assessment with computer agents that engage in conversational dialogues and trialogues with learners. - Arthur C. Graesser; Zhiqiang Cai 002; Brent Morgan; Lijia Wang (Comput. Hum. Behav., 2017)

Impact of Corpus Size and Dimensionality of LSA Spaces from Wikipedia Articles on AutoTutor Answer Evaluation. - Zhiqiang Cai 002; Art Graesser; Leah Windsor; Qinyu Cheng; David W. Shaffer; Xiangen Hu (EDM, 2018)

Clustering the Learning Patterns of Adults with Low Literacy Skills Interacting with an Intelligent Tutoring System. - Ying Fang; Keith T. Shubeck; Anne Lippert; Qinyu Cheng; Genghu Shi; Shi Feng; Jessica Gatewood; Su Chen; Zhiqiang Cai 002; Philip I. Pavlik; Jan C. Frijters; Daphne Greenberg; et al. (EDM, 2018)

Electronixtutor integrates multiple learning resources to teach electronics on the web. - Brent Morgan; Andrew J. Hampton; Zhiqiang Cai 002; Andrew Tackett; Lijia Wang; Xiangen Hu; Arthur C. Graesser (L@S, 2018)

Effect of Domain Corpus Size and LSA Vector Dimension: A Study in Assessing Student Generated Short Texts in Virtual Internships Without Participant Data. - Dipesh Gautam; Zhiqiang Cai 002; Vasile Rus (FLAIRS, 2019)

Authoring Conversational Intelligent Tutoring Systems. - Zhiqiang Cai 002; Xiangen Hu; Arthur C. Graesser (HCI (32), 2019)

A Conversation-Based Intelligent Tutoring System Benefits Adult Readers with Low Literacy Skills. - Ying Fang; Anne Lippert; Zhiqiang Cai 002; Xiangen Hu; Arthur C. Graesser (HCI (32), 2019)

Capturing AIS Behavior Using xAPI-like Statements. - Xiangen Hu; Zhiqiang Cai 002; Andrew J. Hampton; Jody L. Cockroft; Arthur C. Graesser; Cameron Copland; Jeremiah T. Folsom-Kovarik (HCI (32), 2019)

Using an Adaptive Intelligent Tutoring System to Promote Learning Affordances for Adults with Low Literacy Skills. - Anne Lippert; Jessica Gatewood; Zhiqiang Cai 002; Arthur C. Graesser (HCI (32), 2019)

nCoder+: A Semantic Tool for Improving Recall of nCoder Coding. - Zhiqiang Cai 002; Amanda Siebert-Evenstone; Brendan R. Eagan; David Williamson Shaffer; Xiangen Hu; Arthur C. Graesser (ICQE, 2019)

Semantic Matching Evaluation of User Responses to Electronics Questions in AutoTutor. - Colin M. Carmon; Andrew J. Hampton; Brent Morgan; Zhiqiang Cai 002; Lijia Wang; Arthur C. Graesser (L@S, 2019)

Exploring primary school teachers' technological pedagogical content knowledge (TPACK) in online collaborative discourse: An epistemic network analysis. - Si Zhang; Qingtang Liu; Zhiqiang Cai 002 (Br. J. Educ. Technol., 2019)

Classification of Connectives Based on Combination Neural Network. - Min Zhao; Zhiqiang Cai 002; Fang Fang; Jianbo Gao (ICITEE, 2020)

The Mathematical Foundations of Epistemic Network Analysis. - Dale Bowman; Zachari Swiecki; Zhiqiang Cai 002; Yeyu Wang; Brendan R. Eagan; Jeff T. Linderoth; David Williamson Shaffer (ICQE, 2020)

Using Topic Modeling for Code Discovery in Large Scale Text Data. - Zhiqiang Cai 002; Amanda Siebert-Evenstone; Brendan R. Eagan; David Williamson Shaffer (ICQE, 2020)

Directed Epistemic Network Analysis. - Ariel Fogel; Zachari Swiecki; Cody Marquart; Zhiqiang Cai 002; Yeyu Wang; Jais Brohinsky; Amanda Siebert-Evenstone; Brendan R. Eagan; Andrew R. Ruis; David Williamson Shaffer (ICQE, 2020)

Zero Re-centered Projection: An Alternative Proposal for Modeling Empty Networks in ENA. - David Williamson Shaffer; Brendan R. Eagan; Mariah A. Knowles; Clara Porter; Zhiqiang Cai 002 (ICQE, 2021)

Neural Recall Network: A Neural Network Solution to Low Recall Problem in Regex-based Qualitative Coding. - Zhiqiang Cai 002; Cody Marquart; David W. Shaffer (EDM, 2022)

LSTM Neural Network Assisted Regex Development for Qualitative Coding. - Zhiqiang Cai 002; Brendan R. Eagan; Cody Marquart; David Williamson Shaffer (ICQE, 2022)

Does Active Learning Reduce Human Coding?: A Systematic Comparison of Neural Network with nCoder. - Jaeyoon Choi; Andrew R. Ruis; Zhiqiang Cai 002; Brendan R. Eagan; David Williamson Shaffer (ICQE, 2022)

Multiclass Rotations in Epistemic Network Analysis. - Mariah A. Knowles; Amanda Barany; Zhiqiang Cai 002; David Williamson Shaffer (ICQE, 2022)

Ordered Network Analysis. - Yuanru Tan; Andrew R. Ruis; Cody Marquart; Zhiqiang Cai 002; Mariah A. Knowles; David Williamson Shaffer (ICQE, 2022)

Patterns of Adults with Low Literacy Skills Interacting with an Intelligent Tutoring System. - Ying Fang; Anne Lippert; Zhiqiang Cai 002; Su Chen; Jan C. Frijters; Daphne Greenberg; Arthur C. Graesser (Int. J. Artif. Intell. Educ., 2022)

Negative Reversion: Toward Intelligent Co-raters for Coding Qualitative Data in Quantitative Ethnography. - Zhiqiang Cai 002; Brendan R. Eagan; David Williamson Shaffer (ICQE, 2023)

A Lightweight Interactive Regular Expression Generator for Qualitative Coding in Quantitative Ethnography. - Zhiqiang Cai 002; Cody Marquart; Brendan R. Eagan; Yaxuan Xiao; David Williamson Shaffer (ICQE, 2023)

Impact of Agent Language on Student Language in the Structures of Language Connections. - Haiying Li; Zhiqiang Cai 002; Grace Wang; Fanshuo Cheng; Cody Marquart (ICQE, 2023)

Thin Data, Thick Description: Modeling Socio-Environmental Problem-Solving Trajectories in Localized Land-Use Simulations. - Andrew R. Ruis; Yuanru Tan; Jais Brohinsky; Binrui Yang; Yeyu Wang; Zhiqiang Cai 002; David Williamson Shaffer (ICQE, 2023)

Dissecting learning tactics in MOOC using ordered network analysis. - Yizhou Fan; Yuanru Tan; Mladen Rakovic; Yeyu Wang; Zhiqiang Cai 002; David Williamson Shaffer; Dragan Gasevic (J. Comput. Assist. Learn., 2023)

Impact of Conversational Agent Language and Text Structure on Student Language. - Haiying Li; Fanshuo Cheng; Grace Wang; Zhiqiang Cai 002; Art Graesser (ITS (1), 2024)

iPlan: A Platform for Constructing Localized, Reduced-Form Models of Land-Use Impacts. - Andrew R. Ruis; Carol Barford; Jais Brohinsky; Yuanru Tan; Matthew Bougie; Zhiqiang Cai 002; Tyler J. Lark; David Williamson Shaffer (Multimodal Technol. Interact., 2024)

An LLM-Enhanced Multi-agent Architecture for Conversation-Based Assessment. - Xinying Hou; Carol Forsyth; Jessica Andrews-Todd; James Rice; Zhiqiang Cai 002; Yang Jiang; Diego Zapata-Rivera; Art Graesser (AIED (2), 2025)