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Graesser, A. C., Hu, X., Olde, B. A., Ventura, M., Olney, A., Louwerse, M., Franceschetti, D. R., & Person, N. K. (2002). Implementing latent semantic analysis in learning environments with conversational agents and tutorial dialog. In W. G. Gray, & C. D. Schunn (Eds.), Proceedings of the 24rd Annual Conference of the Cognitive Science Society (p. 37). Mahwah, NJ: Erlbaum.