Dr Simon Dennis


Associate Professor
Memory and Language Laboratory
Department of Psychology
Ohio State University
Simon.Dennis@gmail.com

Areas of Interest

My main areas of interest are in human memory and language processing. I focus primarily on episodic recognition and serial recall and the processes behind the extraction of propositional information from text. I am also involved in a number of applied projects in the areas of defense, education and information technology. In particular, we are developing technologies to assist intelligence agents to process large amounts of textual information, to automatically grade essays, to assess and promote vocabulary development and to model how users interact with websites.


Papers & Talks

Present

Porter, C. A., Dennis, S., & Turley, C. (submitted). Understanding Distributed Communication: Visualising Action, Awareness and Intent in a Network Environment. PDF.

Stone, B., Dennis, S. & P. J. Kwantes (submitted). A Systematic Comparison of Semantic Models on Human Similarity Rating Data: The effectiveness of subspacing. PDF. SEMMOD.

Dennis, S., & Mehay, D. N. (submitted). A Single Layer Network Model of Center Embedding and Hierarchical Phrase Structure in Sentence Processing. PDF.

Dennis, S., Lee, M. D., & Kinnell, A. (submitted). Bayesian analysis of recognition memory: The case of the list length effect. PDF.

Maguire, A., Humphreys, M. S., Dennis, S., & Lee, M. D. (submitted). Global similarity accounts of embedded-category designs: Tests of the Global Matching Models.

Dennis, S. (2008). What do cows drink? Talk given for cognitive brownbag. February 26th. PDF ODP .

2007

Butavicius, M., Parsons, K., McCormac, A., Pincombe, B., Lee, M., Burns, N., Smith, L., Preiss, K. & Dennis, S. (2007). A psychological approach to dealing with large corpora. Second HCSNet Workshop of the Next Generation Search Priority Area", Macquarie University, 19-20 July. PDF

Dennis, S. (2007). Semantic Role Discovery using Nonnegative Tensor Factorization. Report compiled for the Defence Science Technology Organization.

Dennis, S. (2007). The Recognizing Textual Entailment Challenge: An empirical analysis and syntagmatic paradigmatic model. Report compiled for the Defence Science Technology Organization.

Dennis, S. (2007). Serial Order Memory: To chain or not to chain. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Dennis, S., Lee, M. D. & Kinnell, A. (2007). A Bayesian Analysis of Recognition Memory. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Monck, A. & Dennis, S. (2007). The Psychological Reality of Atomic Propositions. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Kinnell, A. & Dennis, S. (2007). The List Length Effect In Recognition Memory: An Analysis Using Remember-Know Responses. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Stone, B. & Dennis, S. (2007). LSA Semantic Fields: Predicting Task-Driven Visual Search on Web Pages. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Huang, T. & Dennis, S. (2007). Contextual reinstatement in prospective memory. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Porter, C., Turley, C., Dennis, S., Hansen, J., Webb, M. & Scholz, J. (2007). Battleships: A Distributed Decision Making Exercise and associated Analysis Tools. Presented at the 8th Meeting of the Australasian Society for Cognitive Science. Adelaide. July 9-11.Abstract.

Stone, B. & Dennis, S. (2007). Using LSA Semantic Fields to Predict Eye Movement on Web Pages. The Proceedings of the Twenty Ninth Conference of the Cognitive Science Society. [PDF]

Doxas, I., Dennis, S. & Oliver, W. (2007). The dimensionality of language. The Proceedings of the Twenty Ninth Conference of the Cognitive Science Society. [PDF]. Also presented at Adelaide Mental Life 2006.

Stone, B. & Dennis, S. (2007). Using LSA semantic fields to predict eye movement on web pages. Thirty-fourth Australasian Experimental Psychology COnference, Australian National University. Canberra, April 13-15.

Kinnell, A. & Dennis, S. (2007). The list length effect in recognition memory: An analysis using remember-know responses. Thirty-fourth Australasian Experimental Psychology COnference, Australian National University. Canberra, April 13-15.

Dennis, S., & Stone, B. (2007). Lexical semantics system documentation. Software produced for Defence Research and Development Canada. [PDF]

Doxas, I., Dennis, S. & Oliver, W. (2007). The dimensionality of language. The Proceedings of the Twenty Ninth Conference of the Cognitive Science Society. [PDF]. Also presented at Adelaide Mental Life 2006.

Dennis, S. & Kintsch, W. (2007). The text mapping and inference generation problems in text comprehension: Evaluating a memory-based account. In C. A. Perfetti & F. Schmalhofer (Eds.) Higher level language processes in the brain: Inference and comprehension processes.[PDF].

Dennis, S. & Kintsch, W. (2007). Evaluating theories. In R. Sternberg, R. Roediger, & D. Halpern (Eds.) Critical thinking in psychology. [PDF].

Kintsch, W., McNamara, D., Dennis, S. & Landauer, T. (2007). LSA and meaning: In theory and application. In T. Landauer, D. McNamara, S. Dennis & W. Kintsch Eds. Handbook of Latent Semantic Analysis. Erlbaum.

Dennis, S. (2007). Introducing word order in an LSA framework. In T. Landauer, D. McNamara, S. Dennis & W. Kintsch Eds. Handbook of Latent Semantic Analysis. Erlbaum. [PDF].

Dennis, S. (2007). How to use the LSA website. In T. Landauer, D. McNamara, S. Dennis & W. Kintsch Eds. Handbook of Latent Semantic Analysis. Erlbaum. [PDF].

2006

Dennis, S. & Lee, M. D. (2006). Bayesian Inference for Signal Detection Models of Recognition Memory. Margaret River Workshop, 12-14 July. [PPT].

Dennis, S. (2006). Modelling the virtual machine in simple categorization and rating tasks. Symposium on Categorization and Memory. International Conference on Memory. 16-21 July. University of New South Wales. Sydney. [PPT].

Dennis, S. (2006). A Syntagmatic Paradigmatic Model of Serial Order Memory. Memory and Concept Formation Workshop. 11 July. University of Western Australia. Perth. [PPT].

Dennis, S. & Monck A. (2006). The Psychological Reality of Atomic Propositions. Australasian Experimental Psychology Conference. Brisbane 21-23 April.[PPT].

Steyvers, M., Griffiths, T. L. & Dennis, S. (2006). Probabilistic Inference in Human Semantic Memory. Trends in Cognitive Sciences. 10(7). 327-334. [PDF]. Elsevier.

2005

Dennis, S. (2005). An exemplar-based approach to unsupervised parsing. The Proceedings of the Twenty Seventh Conference of the Cognitive Science Society.[PDF]

Dennis, S. (2005). A Memory-based Theory of Verbal Cognition. Cognitive Science. 29(2). 145-193.[PDF] [Old Version contaiing EM derivations and numerical examples PDF]

2004

Garvin-Doxas, K., Doxas, I. & Dennis, S. (2004). Computer Assisted Misconception Identification and Evaluation in the Sciences, American Evaluation Association, Atlanta, GA.

Dennis, S. (2004). An unsupervised method for the extraction of propositional information from text. Proceedings of the National Academy of Sciences, 101, 5206-5213. [PDF] NSF Press Release

Dennis, S. (2004). Span-based Normalized Edit Distance applied to unsupervised parsing. Adelaide Mental Life. [PDF].

Dennis, S. (2004). The Effectiveness of Automated Essay Assessment in a Tertiary Context: A Progress Report. Assignment for Teaching at University course, University of Adelaide. [PDF].

2003

Dennis, S, Jurafsky, D. & Cer, D. (2003). Supervised and unsupervised models for propositional analysis. Workshop on Syntax, Semantics and Statistics at the Neural Information Processing Society Conference. Vancouver, BC. [PDF].

Dennis, S., Landauer, T., Kintsch, W. & Quesada, J. (2003). Introduction to Latent Semantic Analysis. Slides from the tutorial given at the 25th Annual Meeting of the Cognitive Science Society, Boston. [PDF]

Dennis, S. (2003). Inference by coincidence and the extraction of relational information. Slides presented at the International Hanse Conference on Higher Level Processes in the Brain: Inference and Comprehension Processes. Delmenhorst Germany. [PDF]

Humphreys, M. S., Dennis, S., Maguire, A. M., Reynolds, K., Bolland, S., Hughes, J. D. (2003). What you get out of memory depends of the question you ask. Journal of Experimental Psychology: Learning, Memory and Cognition. 29(5), 797-812.[PDF]

Dennis, S. (2003). A comparison of statistical models for the extraction of lexical information from text corpora. The Proceedings of the Twenty Fifth Conference of the Cognitive Science Society.[PDF]

Harrington, M & Dennis, S. (2003). Structural priming in sentence comprehension. The Proceedings of the Twenty Fifth Conference of the Cognitive Science Society.[PDF]

Dennis, S. (2003). An alignment-based account of serial recall. The Proceedings of the Twenty Fifth Conference of the Cognitive Science Society. [PDF]

2002

Harrington, M. & Dennis, S. (2002). Input-driven language learning. Studies in Second Language Acquisition. 24. 261-268.[PDF]

Finnegan, S., Humphreys, M. S., Dennis, S., & Geffen, G. (2002). ERP 'old/new' effects: memory strength and decisional factor(s). Neuropsychologia. 40(13), 2288-2304. [PDF]

Dennis, S., Bruza, P. & McArthur, R. (2002). Web searching: A process-oriented experimental study of three interactive search paradigms. Journal of the American Society for Information Science and Technology, 53(2), 120-133.[PDF]

2001

Dennis, S. & Harrington, M. (2001). The Syntagmatic Paradigmatic Model: An distributed instance-based model of sentence processing. The Second Workshop on Natural Language Processing and Neural Networks, 30 November, Tokyo.[PDF]

Dennis, S. & Humphreys, M. S. (2001). A context noise model of episodic word recognition. Psychological Review. 108(2). 452-477.[PDF]

Dennis, S. (2001). The Syntagmatic Paradigmatic Model of Sentence Interpretation. Talk presented at University of Colorado Boulder. [PowerPoint] [PDF]

Dennis, S., Kwantes, P., & Simon, D. (2001). A comparison of stemming algorithms for information retrieval. Report provided to the Defence Science and Technology Organisation of Australia.

< 2000

Kwantes, P., Keys, I., & Dennis, S. (2000). A comparison of the Hyperspace Analogue to Language (HAL) and Latent Semantic Analysis (LSA) as information retrieval devices. Report provided to the Defence Science and Technology Organisation of Australia.

Bruza, P., McArthur, R., & Dennis, S. (2000). Interactive internet search: Keyword, directory and query reformulation mechanisms compared. Proceedings of the 23rd annual international ACM SIGIR conference on Research and development in information retrieval. July 24-28, Athens, ACM Press: New York. 280-287. .[PDF]

Nelson, D., McEvoy, C., & Dennis, S. (2000). What is and what does free association measure? Memory & Cognition. 28(6), 887-899. [PDF]

Dennis, S. (1994). The Integration of Learning into Models of Human Memory. Unpublished doctorial thesis. University of Queensland. [PDF]

Dennis, S. & Wiles, J. (1993). Integrating learning into models of human memory: The Hebbian Recurrent Network. Proceedings of the fifteenth annual conference of the Cognitive Science Society. Lawrence Erlbaum Associates. 394-399. [PDF]

Comprehensive List

Teaching & Research Resources

Lexical Semantics Reading Group Schedule
Word Frequency Database - based on the Sydney Morning Herald for 1994.
Connectionist Models of Cognition - an online text on artificial neural network models of cognition with embedded simulations.
Math Memory Models - tutorials on the SAM, TODAM and Matrix models of episodic memory.

Top Publications by Impact Factor

10.5 Dennis, S. (2004). An unsupervised method for the extraction of propositional information from text. Proceedings of the National Academy of Sciences, 101, 5206-5213.

8.83 Dennis, S., Humphreys, M. S., & Wiles, J. (1996). Mathematical constraints on a theory of human memory. Behavioral and Brain Sciences, 19 (3), 559-560.

8.83 Humphreys, M. S, Wiles, J. & Dennis, S. (1994). Towards a theory of human memory: Data structures and access processes. Behavioral and Brain Sciences. 17(4), 655-666.

8.83 Humphreys, M. S, Wiles, J. & Dennis, S. (1994). Beyond the Tower of Babel in Human Memory Research: The validity and utility of specification. Behavioral and Brain Sciences. 17(4).

8.83 Humphreys, M. S, & Dennis, S. (1994) Going from task descriptions to memory structures. Behavioral and Brain Sciences. 17(3):483.

7.880 Steyvers, M., Griffiths, T. L. & Dennis, S. (in press). Probabilistic Inference in Human Semantic Memory. Trends in Cognitive Sceinces.

7.42 Dennis, S. & Humphreys, M. S. (2001). A context noise model of episodic word recognition. Psychological Review. 108(2). 452-477.

3.668 Finnegan, S., Humphreys, M. S., Dennis, S., & Geffen, G. (2002). ERP 'old/new' effects: memory strength and decisional factor(s). Neuropsychologia. 40(13), 2288-2304.

2.670 Dennis, S. (2005). A memory-based theory of verbal cognition. Cognitive Science. 29(2), 145-193.

2.086 Dennis, S., Bruza, P. & McArthur, R. (2002). Web searching: A process-oriented experimental study of three interactive search paradigms. Journal of the American Society for Information Science and Technology, 53(2), 120-133.

2.015 Humphreys, M. S., Dennis, S., Maguire, A. M., Reynolds, K., Bolland, S., Hughes, J. D. (2003). What you get out of memory depends of the question you ask. Journal of Experimental Psychology: Learning, Memory and Cognition. 29(5), 797-812.

1.937 Nelson, D., McEvoy, C., & Dennis, S. (2000). What is and what does free association measure? Memory & Cognition, 28(6), 887-899.

Grants and Contracts

Present

Dunn, J., Dennis, S. & G. I. de Zubicaray. (2007). Single and dual process models of recognition memory: Reconciliation of behavioural, electrophysiological, and neuroimaging data. Australian Research Council. 2006

Dennis, S. (2006). Senior Researcher Grant. Defence Science and Technology Organization.

Dennis, S., Humphreys, M. & Smith, A. (2006). Computational models standing offer. Defence Research and Development Canada.

Dennis, S. & Butavicius, M. (2006). The Textual Entailment Challenge. Defence Science and Technology Organization.

Dennis, S., Ewing, G., Webb, M., Porter, C., Turley, C. & Scholz, J. (2006). The Language of Command. Defence Science and Technology Organization.

Dennis, S. (2006). Syntagmatic Paradigmatic Foundational Research Grant. Defense Science and Technology Organization.

2005

Lee, M. & Dennis, S. (2005). Human decision-making under a scenario known as secretary problem. Defense Science and Technology Organization.

O'Brien, G., O'Carroll, D., Dennis, S., Brooks, M., Koblar, S., & Abbott, D. (2005). Computational Neurosciences Cluster. University of Adelaide.

Dennis, S., Butavicius, M. & Pincomb, B. (2005). Assessing the variability of document similarity judgments. Defense Science and Technology Organization.

Dennis, S., Humphreys, M. S., Boland, S. W., Savvas, S., & Loft, S. D. (2005). Human memory models for operator simulation. Report compiled for Defence Research and Development Canada. [PDF]

2004

Dennis, S. (2004). The role of item features in recognition memory. Research establishment grant. University of Adelaide.

2002

Landauer,T. Kintsch, W., & Dennis, S (2002). Research on and with Novel Educational Technologies for Comprehension, University of Colorado . Institute of Educational Sciences.

2001

Dennis, S. (2001). Website Usability Study: Usability improvement benchmarking, Queensland University of Technology.

Dennis, S., Kwantes, P., Lee, M., Mewhort, D. J.K. & Nelson, D. (2001). Adding Content to models of Human Memory, Australian Research Council Large Grant.

2000

Dennis, S. (2000). Stemming Algorithms for Information Retrieval and Question/Answer Systems, Defense Science and Technology Organization. [PDF]

Harrington, M. & Dennis, S. (2000). Instance-based sentence processing, Australian Research Council Small Grant.

Dennis, S. (2000). Website Usability Study: Prototype Usability, Queensland University of Technology.

Dennis, S. (2000). Website Usability Study: Information Architecture and Site Usability, Queensland University of Technology.

Dennis, S., Kwantes, P., Lee, M., Mewhort, D. J.K. & Nelson, D. (2000). Adding Content to models of Human Memory, University of Queensland Discretionary and Australian Research Council Small Grant.

1999

Dennis, S. (1999). Development of Software for the Semantic Analysis of Text. Defense Science Technology Organization. [PDF]

© 2008 Simon Dennis
Department of Psychology
Ohio State University
Last Updated January, 2008
Email Simon.Dennis@gmail.com