Dr Helen Purchase

Honorary Senior Lecturer (School of Computing Science)

Room S104, Computing Science, 15 Lilybank Gardens, Glasgow G12 8QQ

Research interests

Personal site: http://www.dcs.gla.ac.uk/~hcp

Biography:

My research interests are in Information Visualisation, and particularly in empirical studies of graph drawing. I am interested in how best to display relational information for user understanding, and in designing effective evaluation methods that can produce results to inform the design of information visualisation systems. I have worked on a wide range of aspects in this area: including sketched graph drawing, biological networks, animated dynamic graphs, visual aesthetics, and Euler diagrams.

I have written a book on Empirical Methods for HCI research, published by CUP in 2012: it’s intended audience is PhD students, or anyone who is starting out in the exciting field of empirical user studies.

My teaching responsibilities have included first year and second year courses in HCI and Information Management, as well as a general first year course for students who do not want to take Computing Science as an Honours option. At the higher levels, I have taught HCI, Artificial Intelligence, Professional Skills, and Research Readings. I am an advocate of student peer-review, and have promoted and supported the use of the Aropa peer-review system (mainly at the universities of Glasgow and Auckland, although it is used at several other universities worldwide). I have Teaching Excellence Awards from both the University of Glasgow and the University of Queensland.

I am coordinator for all Student Mobility programmes within the School of Computing Science, covering international and Erasmus exchanges. I am an elected member of the Council of Senate and of the Senate Business Committee. I am elected member of the University's Education Policy & Strategy Committee, a nominated member of the University's Learning and Teaching Committee, and a Senate Assessor for student conduct. I sit on the Ethics Committee for the College of Science & Engineering. In 2013-14, I convened a university-wide working group on the process of gathering student feedback through online questionnaires.

Research Interests:

- Visualisation of relational information. I am interested in the ways in which we can depict node-link graph information effectively, so as to support understanding. This topic covers: dynamic graphs, empirical investigations, sketched graphs, automatic layout algorithms, multivariate visualisation, animation, specialised visualisation techniques (e.g bundles, curves, hierarchies, cascades), and applications (recently, social networks and transport maps)

Staff involved: John Hamer.

External collaborator(s): Daniel Archambault (Swansea); Stephen Kobourov (Arizona); Martin Nollenberg (Karlsruhe); Max Roberts (Essex)

- Empirical studies in information visualisation. I am interested in the ways in which we can investigate information visualisations empirically, and collect and analyse data about their effectiveness. I am interesting in defining an experimental process which can be made easy for first-timers – the nature of psychology experiments does not always transfer easily to HCI. My book “Experimental Human Computer Interaction” takes the researcher through the steps necessary for designing and conducting an experiment (including analysis of data).

External collaborator(s): Daniel Archambault (Swansea).

- Aesthetics in interface design. I am interested in how the visual aesthetic decisions made in the creation of an interface may affect the usability of the interface, with respect to task performance rather than subjective preference: implicitly – can we create visual designs for our interfaces so that they are more effective? I have been looking at both the layout of the interface objects on the screen, as well as the complexity of the images used in the interface. Investigating these ideas requires many carefully controlled empirical studies.

Staff involved: John Hamer; Paul Siebert; David Simmons (Psychology); Martin Lages (Psychology).

- Collaborative learning technologies. I am interested in how we can develop online learning technologies that encourage peer-learning, a model that both allows students to learn from each other, as well as goes part-way to breaking down the ‘teacher-as-expert’ barrier – resulting in a more communal learning environment. Importantly, instructors will not use such technology if it is not easy to use, if it is not easy for students to use, and if there is not sufficient technical and pedagogic support. I am involved in two such systems at the moment: Aropa (peer-review), and SJTWise (ranked choice questions).

Staff involved: John Hamer; Amanda Sykes (Learning & Teaching Centre).

Publications

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Number of items: 115.

2022

Purchase, H. and Miller, A. (2022) Mix-and-Match MCQs: Four for the Price of One. In: 27th Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE), Dublin, Ireland, 08-13 July 2022, pp. 593-594. ISBN 9781450392006 (doi: 10.1145/3502717.3532154)

2021

Miller, A. , Barr, M. , Kavanagh, W. , Valkov, I. and Purchase, H. C. (2021) Breakout group allocation schedules and the social golfer problem with adjacent group sizes. Symmetry, 13(1), 13. (doi: 10.3390/sym13010013)

2020

Purchase, H. C. , Stirling, N. and Archambault, D. (2020) Proximity, Communities, and Attributes in Social Network Visualisation. In: 2020 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM), 07-10 Dec 2020, pp. 65-72. ISBN 9781728110561 (doi: 10.1109/ASONAM49781.2020.9381332)

Vo, D.-B. , Lazarova, K., Purchase, H. C. and McCann, M. (2020) Visual Causality: Investigating Graph Layouts for Understanding Causal Processes. In: 11th International Conference on the Theory and Application of Diagrams (Diagrams 2020), Tallinn, Estonia, 24-28 Aug 2020, pp. 332-347. ISBN 9783030542481 (doi: 10.1007/978-3-030-54249-8_26)

Burch, M., Huang, W., Wakefield, M., Purchase, H. C. , Weiskopf, D. and Hua, J. (2020) The state of the art in empirical user evaluation of graph visualizations. IEEE Access, 9, pp. 4173-4198. (doi: 10.1109/ACCESS.2020.3047616)

2018

Soni, U., Lu, Y., Hansen, B., Purchase, H. , Kobourov, S. and Maciejewski, R. (2018) The perception of graph properties in graph layouts. Computer Graphics Forum, 37(3), pp. 169-181. (doi: 10.1111/cgf.13410)

Burd, R., Espy, K. A., Hossain, M. I., Kobourov, S., Merchant, N. and Purchase, H. (2018) GRAM: Global Research Activity Map. In: 2018 International Conference on Advanced Visual Interfaces, Grosseto, Italy, 29 May - 01 Jun 2018, p. 31. ISBN 9781450356169 (doi: 10.1145/3206505.3206531)

Purchase, H. C. , Isaacs, K., Bueti, T., Hastings, B., Kassam, A., Kim, A. and van Hoesen, S. (2018) A Classification of Infographics. In: 10th International Conference on the Theory and Application of Diagrams, Edinburgh, UK, 18-22 June 2018, pp. 210-218. ISBN 9783319913759 (doi: 10.1007/978-3-319-91376-6_21)

Purchase, H. and Hamer, J. (2018) Peer-review in practice: eight years of Aropä. Assessment and Evaluation in Higher Education, 43(7), pp. 1146-1165. (doi: 10.1080/02602938.2018.1435776)

Purchase, H. and Hamer, J. (2018) Perspectives on peer-review: eight years of Aropä. Assessment and Evaluation in Higher Education, 43(3), pp. 473-487. (doi: 10.1080/02602938.2017.1359819)

2017

Archambault, D., Purchase, H. and Hoßfeld, T. (Eds.) (2017) Evaluation in the Crowd: Crowdsourcing and Human-Centered Experiments. Series: Lecture notes in computer science. Springer: Cham. ISBN 9783319664347

Archambault, D., Purchase, H. C. and Hoßfeld, T. (2017) Evaluation in the crowd: an introduction. In: Archambault, D., Purchase, H. and Hoßfeld, T. (eds.) Evaluation in the Crowd: Crowdsourcing and Human-Centered Experiments. Series: Lecture notes in computer science (10264). Springer: Cham, pp. 1-5. ISBN 9783319664347 (doi: 10.1007/978-3-319-66435-4_1)

2016

Archambault, D. and Purchase, H. C. (2016) Can animation support the visualisation of dynamic graphs? Information Sciences, 330, pp. 495-509. (doi: 10.1016/j.ins.2015.04.017)

Archambault, D. and Purchase, H. C. (2016) On the effective visualisation of dynamic attribute cascades. Information Visualization, 15(1), pp. 51-63. (doi: 10.1177/1473871615576758)

Purchase, H. and Hamer, J. (2016) Aropä: peer review made easy. In: Remenyi, D. (ed.) e-learning Excellence Awards: An Anthology of Case Histories. Academic Conferences and Publishing International Limited, pp. 173-184. ISBN 9781911218166

2015

Hamer, J., Purchase, H. , Luxton-Reilly, A. and Denny, P. (2015) A comparison of peer and tutor feedback. Assessment and Evaluation in Higher Education, 40(1), pp. 151-164. (doi: 10.1080/02602938.2014.893418)

2014

Purchase, H. C. (2014) A healthy critical attitude: revisiting the results of a graph drawing study. Journal of Graph Algorithms and Applications, 18(2), pp. 281-311. (doi: 10.7155/jgaa.00323)

Purchase, H. C. (2014) Twelve years of diagrams research. Journal of Visual Languages and Computing, 25(2), pp. 57-75. (doi: 10.1016/j.jvlc.2013.11.004)

Kerren, A., Purchase, H. C. and Ward, M. O. (2014) Introduction to multivariate network visualization. Lecture Notes in Computer Science, 8380, pp. 1-9. (doi: 10.1007/978-3-319-06793-3_1)

Pretorius, A. J., Purchase, H. C. and Stasko, J. T. (2014) Tasks for multivariate network analysis. Lecture Notes in Computer Science, 8380, pp. 77-95. (doi: 10.1007/978-3-319-06793-3_5)

2013

Archambault, D. and Purchase, H. C. (2013) The “Map” in the mental map: experimental results in dynamic graph drawing. International Journal of Human-Computer Studies, 71(11), pp. 1044-1055. (doi: 10.1016/j.ijhcs.2013.08.004)

Grosset, A. et al. (2013) Engaging Students in Peerwise: An Innovative Online Learning Approach. 6th Annual University of Glasgow Learning and Teaching Conference, Glasgow, UK, 19 Apr 2013.

Purchase, H. C. (2013) Sketched graph drawing: a lesson in empirical studies. Lecture Notes in Computer Science, 8242, pp. 232-243. (doi: 10.1007/978-3-319-03841-4_21)

2012

Marriott, K., Purchase, H.C. , Wybrow, M. and Goncu, C. (2012) Memorability of visual features in network diagrams. IEEE Transactions on Visualization and Computer Graphics, 18(12), pp. 2477-2485. (doi: 10.1109/TVCG.2012.245)

Hamer, J., Sheard, J., Purchase, H.C. and Luxton-Reilly, A. (2012) Contributing student pedagogy. Computer Science Education, 22(4), pp. 315-318. (doi: 10.1080/08993408.2012.727709)

Archambault, D. and Purchase, H.C. (2012) The Mental Map and Memorability in Dynamic Graphs. In: IEEE Pacific Visualization Symposium, Songdo, Korea, 28 Feb-2 March, pp. 89-96.

Archambault, D. and Purchase, H.C. (2012) Mental map preservation helps user orientation in dynamic graphs. In: 20th International Symposium on Graph Drawing, Redmond, WA, USA, 19-21 Sep 2012, pp. 475-486. (doi: 10.1007/978-3-642-36763-2_42)

Purchase, H.C. , Freeman, E. and Hamer, J. (2012) Predicting Visual Complexity. In: Predicting Perceptions. The 3rd International Conference on Appearance, Edinburgh, Scotland, 17-19 April 2012, pp. 62-65.

Purchase, H.C. (2012) Experimental Human-Computer Interaction: A Practical Guide With Visual Examples. Cambridge University Press: New York, NY, USA. ISBN 9781107010062

Purchase, H.C. , Freeman, E. and Hamer, J. (2012) An Exploration of Visual Complexity. In: Theory and Application of Diagrams, Canterbury, England, 2-6 July 2012, pp. 200-213.

Purchase, H.C. , Hamer, J., Nöllenburg, M. and Kobourov, S.G. (2012) On the usability of Lombardi graph drawings. In: 20th International Symposium on Graph Drawing, Redmond, WA, USA, 19-21 Sep 2012, pp. 451-462. (doi: 10.1007/978-3-642-36763-2_40)

Purchase, H.C. , Pilcher, C. and Plimmer, B. (2012) Graph drawing aesthetics — created by users not algorithms. IEEE Transactions on Visualization and Computer Graphics, 18(1), (doi: 10.1109/TVCG.2010.269)

Rodgers, P., Zhang, L. and Purchase, H.C. (2012) Wellformedness properties in Euler diagrams: which should be used? IEEE Transactions on Visualization and Computer Graphics, 18(7), pp. 1089-1100. (doi: 10.1109/TVCG.2011.143)

Salimun, C., Purchase, H.C. and Simmons, D. (2012) Visual aesthetics in computer interface design: does it matter? In: 34th European Conference on Visual Perception, Toulouse, France, 28 Aug-1 Sept 2011,

Vande Moere, A. and Purchase, H.C. (2012) On the role of design in information visualization. Information Visualization, 10(4), pp. 356-371. (doi: 10.1177/1473871611415996)

2011

Archambault, D., Purchase, H.C. and Pinaud, B. (2011) Animation, small multiples, and the effect of mental map preservation in dynamic graphs. IEEE Transactions on Visualization and Computer Graphics, 17(4), pp. 539-552. (doi: 10.1109/TVCG.2010.78)

Archambault, D., Purchase, H.C. and Pinaud, B. (2011) Difference map readability for dynamic graphs. In: Brandes, U. and Cornelsen, S. (eds.) Graph Drawing : 18th International Symposium, GD 2010, Konstanz, Germany, September 21-24, 2010. Springer. ISBN 9783642184680

Bourqui, R., Purchase, H.C. and Jourdan, F. (2011) Domain specific vs generic network visualization: an evaluation with metabolic networks. In: Australasian User Interface Conference, Perth, Australia, 17-20 January 2011, pp. 9-18. ISBN 9781920682972

Hamer, J., Purchase, H.C. , Luxton-Reilly, A. and Sheard, J. (2011) Tools for 'contributing student learning'. ACM Inroads, 2(2), pp. 1-14.

Purchase, H.C. , Hamer, J., Jamieson, A. and Ryan, O. (2011) Investigating objective measures of web page aesthetics and usability. In: Australasian User Interface Conference, Perth, Australia, 17-20 January 2011, pp. 19-28. ISBN 9781920682972

2010

Archambault, D., Purchase, H.C. and Pinaud, B. (2010) The readability of path-preserving clusterings of graphs. Computer Graphics Forum, 29(3), pp. 1173-1182. (doi: 10.1111/j.1467-8659.2009.01683.x)

Denny, P., Dahlstrom, D., Purchase, H.C. , Luxton-Reilly, A. and Hamer, J. (2010) Self-predicted and actual performance in an introductory programming course. In: 15th annual conference on Innovation and Technology in Computer Science Education (ITiCSE 2010), Ankara, Turkey., 26-30 Jun 2010, pp. 118-122. ISBN 9781605587295 (doi: 10.1145/1822090.1822124)

Hamer, J., Purchase, H.C. , Luxton-Reilly, A. and Sheard, J. (2010) Tools for 'contributing student learning'. In: 15th Annual Conference on Innovation and Technology in Computer Science Education (ITiCSE 2010), Ankara, Turkey., 26-30 Jun 2010, pp. 1-14. ISBN 9781450306775 (doi: 10.1145/1971681.1971683)

Plimmer, B., Purchase, H.C. and Yang, H.-Y. (2010) SketchNode: intelligent sketching support and formal diagramming. In: OzChi Conference, Brisbane, Australia, 22-26 Nov 2010, pp. 136-143.

Purchase, H.C. , Hamer, J., Denny, P. and Luxton-Reilly, A. (2010) The quality of a PeerWise MCQ repository. In: Australasian Computing Education Conference (ACEC 2010), Melbourne, Australia, 6-9 Apr 2010, pp. 135-142.

Purchase, H.C. , Plimmer, B., Baker, R. and Pilcher, C. (2010) Graph drawing aesthetics in user-sketched graph layouts. In: 11th Australasian User Interface Conference, Brisbane, Australia, Jan 2010, pp. 80-88.

Salimun, C., Purchase, H.C. , Simmons, D. and Brewster, S. (2010) The effect of aesthetically pleasing composition on visual search performance. In: 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries, Reykjavik, Iceland, 16-20 Oct, 2010, pp. 422-431. ISBN 9781605589343 (doi: 10.1145/1868914.1868963)

Salimun, C., Purchase, H. C. , Simmons, D. R. and Brewster, S. (2010) Preference ranking of screen layout principles. In: Proceedings of BCS HCI 2010, Dundee, UK, pp. 81-87. ISBN 9781780171302

2009

Denny, P., Luxton-Reilly, A., Hamer, J. and Purchase, H.C. (2009) Coverage of course topics in a student generated MCQ repository. SIGCSE Bulletin, 41(3), pp. 11-15. (doi: 10.1145/1595496.1562888)

Hamer, J., Purchase, H.C. , Denny, P. and Luxton-Reilly, A. (2009) Quality of peer assessment in CS1. In: 5th International Workshop on Computing Education Research, Berkeley, CA, USA, 10-11 Aug 2009, pp. 27-36. (doi: 10.1145/1584322.1584327)

Mitchell, A., Purchase, H.C. and Hamer, J. (2009) Computing Science: what do pupils think? In: 14th Annual ACM SIGCSE Conference on Innovation and Technology in Computer Science Education, Paris, France, 6-9 Jul 2009, p. 353. (doi: 10.1145/1562877.1562995)

Plimmer, B., Purchase, H. C. , Yang, H.-Y., Laylock, L. and Milburn, J. (2009) Preserving the Hand-drawn Appearance of Graphs. In: International Workshop on Visual Languages and Computing, pp. 347-352.

2008

Denny, P., Luxton-Reilly, A., Hamer, J. and Purchase, H.C. (2008) PeerWise: students sharing their multiple choice questions. In: Proceeding of the Fourth international Workshop on Computing Education Research. ACM, pp. 51-58. ISBN 9781605582160

Denny, P., Hamer, J., Luxton-Reilly, A. and Purchase, H. C. (2008) PeerWise. In: 8th Koli Calling International Conference on Computing Education Research, Lieksa, Finland, 13-16 Nov 2008, pp. 109-112. ISBN 9781605583853 (doi: 10.1145/1595356.1595378)

Hamer, J., Cutts, Q. , Jackova, J., Luxton-Reilly, A., McCartney, R., Purchase, H.C. , Riesdel, C., Saeli, M., Sanders, K. and Sheard, J. (2008) Contributing student pedagogy. SIGCSE Bulletin, 40(4), pp. 194-212. (doi: 10.1145/1473195.1473242)

Purchase, H.C. , Andrienko, N., Jankun-Kelly, T.J. and Ward, M. (2008) Theoretical foundations of information visualization. In: Kerren, A., Statsko, J.T., Fekete, J.D. and North, C. (eds.) Information Visualization: Human-Centered Issues and Perspectives. Series: Lecture notes in computer science (4950). Springer, pp. 46-64. ISBN 9783540709565

Purchase, H. C. and Samra, A. (2008) Extremes are better: Investigating mental map preservation in dynamic graphs. In: Diagrams 2008. Fifth International Conference on the Theory and Application of Diagrams, Herrsching am Ammersee, Germany, 19-21 September, 2008, pp. 60-73. ISBN 9783540877295 (doi: 10.1007%2F978-3-540-87730-1_9)

Saffrey, P. and Purchase, H.C. (2008) The 'Mental map' versus 'Static aesthetic' compromise in dynamic graphs: a user study. In: Plimmer, B. and Weber, G. (eds.) Proceedings Of The Ninth Conference On Australasian User Interface (AUIC2008), Wollongong, NSW, January. Series: ACM International Conference Proceeding series (314). ACS, pp. 85-93. ISBN 9781920682576

2007

Reid, P., Hallet-Hook, F., Plimmer, B. and Purchase, H. C. (2007) Applying Layout Algorithms to Hand-drawn Graphs. In: OzCHI, pp. 203-206. ISBN 9781595938725 (doi: 10.1145/1324892.1324933)

2006

Purchase, H.C. (2006) Student compliance with ethical guidelines: the Glasgow ethics code. Innovations in Teaching and Learning in Information and Computer Sciences, 5(2),

Brown, L.M., Brewster, S.A. and Purchase, H.C. (2006) Multidimensional tactons for non-visual information presentation in mobile devices. In: 8th conference on Human-Computer Interaction with Mobile Devices and Services, Helsinki, Finland, 12-15 September 2006, pp. 231-238. ISBN 1595933905 (doi: 10.1145/1152215.1152265)

Brown, L.M., Brewster, S.A. and Purchase, H.C. (2006) Tactile crescendos and sforzandos: applying musical techniques to tactile icon design. In: Conference on Human Factors in Computing Systems, Montréal, Québec, Canada, 22-27 April 2006, pp. 610-615. ISBN 1595932984 (doi: 10.1145/1125451.1125578)

Holz, H., Applin, A., Haberman, B., Joyce, D., Purchase, H.C. and Reed, C. (2006) Research Methods in Computing: What are they, and how should we teach them? SIGSCE Bulletin, 38(4), pp. 96-114.

Purchase, H. C. , Hoggan, E. and Görg, C. (2006) How Important Is the “Mental Map”? – An Empirical Investigation of a Dynamic Graph Layout Algorithm. In: Graph Drawing Conference, Karlsruhe, Germany, 18-20 Sept 2006, pp. 184-195. ISBN 9783540709039 (doi: 10.1007/978-3-540-70904-6_19)

2005

Brown, L.M., Brewster, S.A. and Purchase, H.C. (2005) A first investigation into the effectiveness of Tactons. In: First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2005., Pisa, Italy, 18-20 March 2005, pp. 167-176. ISBN 0769523102 (doi: 10.1109/WHC.2005.6)

2004

Purchase, H.C. (2004) Evaluating Graph Drawing Aesthetics: defining and exploring a new empirical research area. In: DiMarco, J. (ed.) Computer Graphics and Multimedia: Applications, Problems and Solutions. Idea Group Publishing, pp. 145-178.

Purchase, H.C. , Mitchell, C. and Ounis, I. (2004) Gauging Students' Understanding Through Interactive Lectures. In: BNCOD 21, Edinburgh, UK, 7-9 July, 2004, pp. 234-243. (doi: 10.1007/b98625)

Purchase, H.C. , Welland, R., McGill, M. and Colpoys, L. (2004) Comprehension of diagram syntax: an empirical study of Entity Relationship Diagram notations. International Journal of Human-Computer Studies, 61(2), pp. 187-203.

2003

Purchase, H.C. , Colpoys, L., Carrington, D. and McGill, M. (2003) UML class diagrams: an empirical study of comprehension. In: Zhang, K. (ed.) Software Visualization: From Theory to Practice. Series: Kluwer international series in engineering and computer science. Kluwer Academic: Boston, pp. 149-178. ISBN 9781402074486

Wyeth, P. and Purchase, H. C. (2003) Using Developmental Theories to Inform the Design of Technology for Children. In: Proceedings of the 2003 conference on Interaction design and children, Preston, England, July 01 - 03, 2003, pp. 93-100. ISBN 158113732X (doi: 10.1145/953536.953550)

2002

Carrington, D., Colpoys, L., McGill, M. and Purchase, H.C. (2002) Experimenting with Layout and Notation in UML Diagrams. In: International Symposium on Empirical Software Engineering,

Purchase, H.C. (2002) Metrics for Graph Drawing Aesthetics. Journal of Visual Languages and Computing, 13(5), pp. 501-516.

Purchase, H.C. , Carrington, D. and Allder, J.-A. (2002) Empirical evaluation of aesthetics-based graph layout. Empirical Software Engineering, 7(3), pp. 233-255. (doi: 10.1023/A:1016344215610)

Purchase, H.C. , Colpoys, L., McGill, M. and Carrington, D. (2002) UML collaboration diagram syntax: an empirical study of comprehension. In: First International Workshop of Visualizing Sofware for Understanding and Analysis,, Paris, France, 26 June, 2002, pp. 13-22. (doi: 10.1109/VISSOF.2002.1019790)

Purchase, H.C. and Worrill, J. (2002) An empirical study of online help design: features and principles. International Journal of Human-Computer Studies, 56(5), pp. 539-567. (doi: 10.1006/ijhc.2002.1009)

Purchase, H.E., Allder, J. and Carrington, D. (2002) Graph layout aesthetics in uml diagrams: user preferences. Journal of Graph Algorithms and Applications, 6(3), pp. 255-279.

Ware, C., Purchase, H.C. , Colpoys, L. and McGill, M. (2002) Cognitive measurements of graph aesthetics. Information Visualization, 1(2), pp. 103-110.

Wyeth, P. and Purchase, H. (2002) Designing technology for children: moving from the computer into the physical world with electronic blocks. Information Technology in Childhood Education Annual, 2002(1), pp. 219-244.

Wyeth, P. and Purchase, H.C. (2002) Tangible programming elements for young children. In: Terveen, L. (ed.) Changing the World, Changing Ourselves: CHI 20 02, Minneapolis, Minn., U.S.A., 20-25 April, 2002: Extended Abstracts. Association for Computing Machinery: New York, USA, pp. 774-775. ISBN 9781581134544

2001

Purchase, H.C. , Colpoys, L., McGill, M., Carrington, D. and Britton, C. (2001) UML Class diagram syntax: an empirical study of comprehension. In: Australasian Symposium on Information Visualisation, Sydney, Australia, 3-4 December, 2001, pp. 113-120.

Purchase, H.C. and Naumann, D. (2001) A semiotic model of multimedia: theory and evaluation. In: Rahman, S.M. (ed.) Design and Management of Multimedia Information Systems: Opportunities and Challenges. Idea Group Publishing, pp. 1-21. ISBN 9781930708006

Purchase, H. C. , McGill, M., Colpoys, L. and Carrington, D. (2001) Graph Drawing Aesthetics and the Comprehension of UML Class Diagrams: An Empirical Study. In: 2001 Asia-Pacific Symposium on Information Visualisation, Darlinghurst, Australia, 3-4 Dec 2001, pp. 129-137. ISBN 0909925879

Wyeth, P. and Purchase, H.C. (2001) Exploring the learning potential of an artificial life simulation. International Journal of Continuing Engineering, Education and Life-Long Learning, 11(3), pp. 229-241. (doi: 10.1504/IJCEELL.2001.000396)

2000

Purchase, H.C. (2000) Effective information visualisation: a study of graph drawing aesthetics and algorithms. Interacting with Computers, 13(2), pp. 477-506.

Purchase, H.C. (2000) Learning about Interface Design through Peer Assessment. Assessment and Evaluation in Higher Education, 25(4), pp. 341-352.

Purchase, H.C. and Naumann, D. (2000) The TOMUS Model of Multimedia: An Empirical Investigation. In: EdMedia: World Conference on Educational Media and Technology, 2000, Montreal, Canada, 26 June - 1 July 2000, pp. 887-892. ISBN 9781880094402

Purchase, H. C. (2000) Peer Assessment: Encouraging Reflection on Interface Design. In: 23rd Australasian Computer Science Conference, Canberra, Australia, 31 Jan - 3 Feb 2000, ISBN 076950518X (doi: 10.1109/ACSC.2000.824403)

Purchase, H. C. , Allder, J.-A. and Carrington, D. (2000) User preference of Graph Layout Aesthetics: a UML study. In: Graph Drawing 2000: 8th International Symposium, Colonial Williamsburg, VA, USA, 20-23 Sept 2000, pp. 5-18. ISBN 9783540415541 (doi: 10.1007/3-540-44541-2_2)

Purchase, H. C. , Carrington, D. and Allder, J.-A. (2000) Experimenting with Aesthetics-Based Graph Layout. In: Diagrams 2000: First International Conferenc, Edinburgh, UK, 1-3 Sept 2000, pp. 498-501. ISBN 9783540679158 (doi: 10.1007/3-540-44590-0_46)

Wyeth, P. and Purchase, H.C. (2000) Programming without a computer: a new interface for children under eight. In: Thomas, B. and Warren, J.C. (eds.) First Australasian User Interface Conference (AUIC 2000): Proceedings, 31 January - 3 February 2000, Canberra, Australia. IEEE: Los Alamitos, USA, pp. 141-148. ISBN 9780769505152

1999

Burmeister, J., Wiles, J. and Purchase, H.C. (1999) The integration of cognitive knowledge into a perceptual representation: Lessons from Human and Computer Go. In: Wiles, J. and Dartnall, T. (eds.) Perspectives on Cognitive Science, vol II: Theories, experiments, and foundations. Ablex, pp. 239-258.

Dia, H. and Purchase, H.C. (1999) Modelling the impacts of advanced traveller information systems using intelligent agents. Road and Transport Research, 8(3), pp. 68-73.

Purchase, H.C. (1999) Informationally Equivalent Representations: An architecture and applications. In: Wiles, J. and Dartnall, T. (eds.) Perspectives on Cognitive Science, vol II: Theories, experiments, and foundations. Ablex, pp. 329-346.

Purchase, H.C. (1999) A Semiotic Definition of Multimedia Communication. Semiotica, 123(3/4), pp. 247-259.

Wyeth, P. and Purchase, H.C. (1999) Developmentally appropriate learning: implications for early childhood technology education. In: Baggott, L. and Nichol, J. (eds.) Proceedings of the Ninth International PEG Conference: Intelligent Computer and Communications Technology: Teaching and Learning for the 21st Century, University of Exeter, UK, 10-12 July 1999. University of Exeter: Exeter, UK, pp. 115-122.

1998

Purchase, H.C. (1998) Defining multimedia. IEEE MultiMedia, 5(1), pp. 8-15. (doi: 10.1109/93.664737)

Purchase, H.C. (1998) The effects of graph layout. In: Calder, P. and Thomas, B. (eds.) Proceedings of the 1998 Australasian Computer Human Interaction Conference, Adelaide, SA, Australia, 30 Nov-4 Dec 1998. IEEE: Los Alamitos, CA, USA, pp. 80-86. ISBN 9780818692062 (doi: 10.1109/OZCHI.1998.732199)

Purchase, H.C. (1998) Performance of layout algorithms: Comprehension, not computation. Journal of Visual Languages and Computing, 9(6), pp. 647-657.

1997

Hussey, A., Leadbetter, D. and Purchase, H. C. (1997) Learning Object-Oriented Programming in Six Hours: An Experience with School Students. In: 2nd Australasian Conference on Computer Science Education, Melborne, Victoria, Australia, 2-4 July 1997, pp. 117-125. ISBN 0897919580 (doi: 10.1145/299359.299377)

Purchase, H.C. (1997) Multimedia communication and technology: a semiotic perspective. In: Design of Computing Systems : Proceedings of the Seventh International Conference on Human-Computer Interaction (HCI International '97), San Francisco, California, USA, August 24-29 1997. Series: Advances in human factors/ergonomics, 21B. Elsevier: New York, NY, USA, pp. 687-690. ISBN 9780444821836

Purchase, H.C. (1997) Which aesthetic has the greatest effect on human understanding? Lecture Notes in Computer Science, 1353, pp. 248-261. (doi: 10.1007/3-540-63938-1_67)

Purchase, H.C. , Cohen, R.F. and James, M. (1997) An Experimental Study of the Basis for Graph Drawing Algorithms,. ACM Journal of Experimental Algorithmics, 2(4), pp. 1-17.

Purchase, H. C. , Hussey, A., Brookes, W. and Leadbetter, D. (1997) Fostering Interest in Information Technology: Running a Vacation School for Pre-university Students. In: 2nd Australasian Conference on Computer Science Education, Melborne, Victoria, Australia, 2-4 July 1997, ISBN 0897919580 (doi: 10.1145/299359.299378)

1996

Bakker, P., Goodchild, A., Strooper, P., Carrington, D., MacColl, I., Creasy, P. and Purchase, H. C. (1996) Setting Up a Tutor Training Programme in Computer Science. In: 1st Australian Conference on Computer Science Education, Philadelphia, PA, USA, 15-17 Feb 1996, pp. 254-259. ISBN 0897918452 (doi: 10.1145/369585.369642)

Pederson, M. and Purchase, H.C. (1996) Pragmatics versus Purism - Taking the Best of Both Worlds. In: PRICAI-96 Workshop on Future Issues for Multi-lingual Text Processing, Cairns, Australia, 26-30 Aug 1996, pp. 435-446.

Purchase, H.C. , Cohen, R.F. and James, M. (1996) Validating graph drawing aesthetics. Lecture Notes in Computer Science, 1027, pp. 435-446. (doi: 10.1007/BFb0021827)

Purchase, H.C. and Kennish, J.M. (1996) Gloss: Interactive Navigation of Lexical Space. In: Asia-Pacific conference on Human Computer Interaction, Singapore, 25-28 June 1996,

1995

Bakker, P., Carrington, D., Goodchild, A., Hayes, I., Purchase, H.C. and Strooper, P. (1995) The Communicating Technologist: An Educational Challenge. In: Frontiers in Education Conference, Atlanta, GA, USA, 1-5 Nov 1995, ISBN 0780330226 (doi: 10.1109/FIE.1995.483173)

Purchase, H.C. (1995) Interactive Schematic Representation Systems and Related Research Issues. In: International Conference on Computers in Education,

1994

Purchase, H.C. (1994) Computers as interactive representational devices for declarative domains. In: World conference on Educational Multimedia and Hypermedia, Vancouver, BC, Canada, 25-30 Jun 1994, pp. 462-467.

1993

Purchase, H.C. (1993) Kreek : Investigating Pre-adolescent Symbolic, Structural Envisagement, and Reflective Skills. In: Seventh PEG Conference on AI Tools and the Classroom: Theory into Practise,

Purchase, H.C. (1993) A Schematic Knowledge-Based Educational System and its Use in Investigating Symbolic Processing, Structural Envisagement, and Reflective Skills. In: World Conference on Artificial Intelligence in Education,

1991

Purchase, H.C. and Robinson, C.B. (1991) Kreek: Knowledge Presentation, Expression and Enquiry. In: Sixth International PEG Conference On Knowledge Based Environments For Teaching And Learning, Rapallo, Genova, Italy, 1 May - 2 June, 1991,

1990

Purchase, H.C. and Robinson, C.B. (1990) Design Issues for a Knowledge-Based Educational System. In: 5th World Conference on Computers in Education, Sydney, N.S.W., July 9-13 1990,

1989

Bradshaw, J. and Purchase, H.C. (1989) Three ecological applications in P.R.O. In: Vadera, S. (ed.) Expert system Applications. Sigma Press, pp. 133-148. ISBN 9781850581277

This list was generated on Thu Apr 18 09:25:23 2024 BST.