UC Spark

Professor Tim Bell

Computer Science and Software Engineering

Fields of Research

  • Computer Science education
  • Text compression
  • Algorithms
  • Computer music

Researcher Summary

Research interests include computer science education, compression, and computers and music.

Subject Area: Disciplines

Research Groups

Key Methodologies

  • Children and computers
  • Algorithms
  • Computer music
  • Text compression

Prizes and Awards

  • ETH (Zurich) ABZ International honorary medal for fundamental contributions to Computer Science Education (2013)
  • University of Canterbury Innovation Medal (2011)

Publications


  • Bell, T., Andreae, P. and Robins, A. (2012) Computer Science in NZ High Schools: The First Year of the New Standards. Raleigh, NC, USA: 43rd ACM technical symposium on Computer Science Education (SIGCSE '12), 29 Feb-3 Mar 2012. In Proceedings: 343-348. http://dl.acm.org/citation.cfm?id=2157136.2157240. (Conference Contribution - Paper in published proceedings)
  • Bell, T., Rosamond, F. and Casey, N. (2012) Computer Science Unplugged and related projects in math and computer science popularization. In H.L. Bodlaender, R. Downey, F.V. Fomin and D. Marx (Ed.), The Multivariate Algorithmic Revolution and Beyond: Essays Dedicated to Michael R. Fellows on the Occasion of His 60th Birthday. LNCS 7370: 398-456. Berlin/Heidelberg: Springer-Verlag. http://dx.doi.org/10.1007/978-3-642-30891-8_18. (Chapter in Book)
  • Bell, T., Newton, H., Andreae, P. and Robins, A. (2012) The introduction of computer science to NZ high schools: An analysis of student work. Hamburg, Germany: 7th Workshop in Primary and Secondary Computing Education (WiPSCE 2012), 8-9 Nov 2012. (Conference Contribution - Paper in published proceedings)
  • Bell, T., Fellows, M., Rosamond, F., Bell, J. and Marghitu, D. (2012) Unplugging education: Removing barriers to engaging with new disciplines. Berlin, Germany: Conference of the Society for Design and Process Science (SDPS), 10-14 Jun 2012. (Conference Contribution - Paper in published proceedings)
  • Bell, T., Curzon, P., Cutts, Q., Dagiene, V. and Haberman, B. (2011) Introducing Students to Computer Science With Programmes That Don't Emphasise Programming. Darmstadt, Germany: 16th Annual Conference on Innovation and Technology in Computer Science Education, 27-29 Jun 2011. In ITiCSE '11: Proceedings of the 16th Annual Conference on Innovation and Technology in Computer Science Education (Conference Contribution - Poster presentation)
  • Bell, T., Curzon, P., Cutts, Q., Dagiene, V. and Haberman, B. (2011) Overcoming Obstacles to CS Education by using Non-Programming Outreach Programmes. Bratislava, Slovakia: Informatics in Schools: Contributing to 21st Century Education (ISSEP 2011), 26-29 Oct 2011. (Conference Contribution - Paper in published proceedings)
  • Bell, T. and Bell, M. (2011) Reaching out (binary codes). Dallas, TX, USA: 42nd ACM Technical Symposium on Computer Science Education (SIGCSE 2011), 9-12 Mar 2011. (Conference Contribution - Other)
  • Bell, T., Bell, M. and Chicha, V. (2011) Santa's dirty socks (divide and conquer). Dallas, TX, USA: 42nd ACM Technical Symposium on Computer Science Education (SIGCSE 2011), 9-12 Mar 2011. (Conference Contribution - Other)
  • Bell, T. and Aspvall, B. (2011) Sorting Algorithms as Special Cases of a Priority Queue Sort. Dallas, TX, USA: 42nd ACM Technical Symposium on Computer Science Education (SIGCSE 2011), 9-12 Mar 2011. In Proceedings of SIGCSE 2011 123-128. http://dx.doi.org/10.1145/1953163.1953203. (Conference Contribution - Paper in published proceedings)
  • Bell, T. and Lambert, L. (2011) Teaching Computer Science Majors About Teaching Computer Science. Dallas, TX, USA: 42nd ACM Technical Symposium on Computer Science Education (SIGCSE 2011), 9-12 Mar 2011. In Proceedings of the 42nd ACM technical symposium on Computer Science Education 541-546. (Conference Contribution - Paper in published proceedings)
  • Bell, T., Marghitu, D. and Bell, J. (2011) Workshop: CS Unplugged: Computational Thinking without Computers. South Korea: Society for Design and Process Science (SDPS-11), 12-16 Jun 2011. (Conference Contribution - Other)
  • Murugesh, S., Bell, T. and McGrath, A. (2010) A Review of Computer Science Resources to Support NCEA. Dunedin, New Zealand: 1st Annual Conference of Computing and Information Technology Research and Education NZ (CITRENZ2010), 6-9 Jul 2010. In Proceedings 173-181. http://www.citrenz.ac.nz/conferences/2010/papers10/papers10_9.pdf. (Conference Contribution - Paper in published proceedings)
  • Jin, H., Ibrahim, S., Bell, T., Gao, W., Huang, D. and Wu, S. (2010) Cloud Types and Services. In Furht, B., Escalante, A. (Ed.), Handbook of Cloud Computing: 335-355. New York: Springer. http://dx.doi.org/10.1007/978-1-4419-6524-0. (Chapter in Book)
  • Voigt, J., Bell, T. and Aspvall, B. (2010) Competition-style programming problems for Computer Science Unplugged activities. In E. Verdu, R. Lorenzo, M. Revilla and L. Regueras (Ed.), A New Learning Paradigm: Competition Supported by Technology: 207-234. Boecillo: CEDETEL. (Chapter in Book)
  • Bell, T., Bell, M. and Finnerty, K. (2010) Computer Science Buskers? (Error Correction). Milwaukee, WI, USA: 41st ACM Technical Symposium on Computer Science Education (SIGCSE 2010), 10-13 Mar 2010. (Conference Contribution - Other)
  • Bell, T., Andreae, P. and Lambert, L. (2010) Computer Science in New Zealand High Schools. Brisbane, Australia: 12th Australasian Computing Education Conference (ACE 2010), 18-21 Jan 2010. In Australian Computer Science Communications 32(2) 15-22. (Conference Contribution - Paper in published proceedings)
  • Bell, T., Arpaci-Dusseau, A., Witten, I. and Fellows, M. (2010) Computer Science Unplugged: Understanding Computing Through Games and Puzzles. Hubei: Huazhong University of Science and Technology Press. pp. (Authored Book)
  • Thompson, D. and Bell, T. (2010) Evaluating CS Education Activities in Virtual Worlds Through Automated Monitoring. Victoria University of Wellington, New Zealand: New Zealand Computer Science Students Research Conference, 12-15 Apr 2010. (Conference Contribution - Full conference paper)
  • Bell, T. and Bell, R. (2010) Image Compression - Making Contact. Milwaukee, WI, USA: 41st ACM Technical Symposium on Computer Science Education (SIGCSE 2010), 10-13 Mar 2010. (Conference Contribution - Other)
  • Bell, T. and Bell, R. (2010) Sorting Algorithms (Unplugged). Milwaukee, WI, USA: 41st ACM Technical Symposium on Computer Science Education (SIGCSE 2010), 10-13 Mar 2010. (Conference Contribution - Other)
  • Ward, B., Bell, T., Marghitu, D. and Lambert, L. (2010) Teaching computer science concepts in Scratch and Alice. The Journal of Computing Sciences in Colleges 26(2): 173-180. (Journal Article)
  • Jin, H., Ibrahim, S., Bell, T., Qi, L., Cao, H., Wu, S. and Shi, X. (2010) Tools and Technologies for Building Clouds. In N. Antonopoulos and L. Gillam (Ed.), Cloud Computing: Principles, Systems and Applications: 3-20. London: Springer-Verlag. (Chapter in Book)
  • Thompson, D. and Bell, T. (2010) Virtual Worlds: Evaluating CS education activities through automated monitoring. Dallas, TX, USA: Society for Design and Process Science (SDPS 2010), 6-11 Jun 2010. (Conference Contribution - Paper in published proceedings)
  • Nishida, T., Kanemune, S., Namiki, M., Idosaka, Y., Bell, T. and Kuno, Y. (2009) A CS Unplugged Design Pattern. Chattanooga, TN, USA: The 40th ACM Technical Symposium on Computer Science Education (SIGCSE 2009), 3-7 Mar 2009. In SIGCSE '09 Proceedings 231-235. http://dx.doi.org/10.1145/1508865.1508951. (Conference Contribution - Paper in published proceedings)
  • Bainbridge, D. and Bell, T.C. (2009) An Ajax-based digital music stand for Greenstone. Austin, TX, USA: Joint Conference on Digital Libraries (JCDL 2009), 15-19 Jun 2009. (Conference Contribution - Other)
  • Khalid, R., Kreutzer, W. and Bell, T. (2009) Combining Simulation and Animation of Queueing Scenarios in a Flash-Based Discrete Event Simulator. Sydney, Australia: 3rd International United Information Systems Conference (UNISCON 2009), 21-24 Apr 2009. In Lecture Notes in Business Information Processing 20(Information Systems: Modeling, Development and Int) 240-251. (Conference Contribution - Paper in published proceedings)
  • Bell, T. (2009) Computational Thinking through Computer Science Unplugged. In A Workshop Report on the Scope and Nature of Computational Thinking Committee for the Workshops on Computational Thinking; National Research Council. Workshop report. (Other)
  • Bell, T., Alexander, J., Freeman, I. and Grimley, M. (2009) Computer Science Unplugged: School Students Doing Real Computing Without Computers. The New Zealand Journal of Applied Computing and Information Technology 13(1): 20-29. (Journal Article)
  • Curzon, P., McOwan, P.W., Cutts, Q.I. and Bell, T. (2009) Enthusing and inspiring with reusable kinaesthetic activities. Paris, France: ITiCSE 2009: Innovation and Technology in Computer Science Education, 3-8 Jul 2009. In SIGCSE Bulletin 41(3) 94-98. http://doi.acm.org/10.1145/1595496.1562911. (Conference Contribution - Paper in published proceedings)
  • Khalid, R., Kreutzer, W. and Bell, T. (2009) Flash: Making Simulations interactive. Adelaide, Australia: SimTecT 2009, 15-19 Jun 2009. (Conference Contribution - Paper in published proceedings)
  • Bianco, G.M., Bell, T. and Tinazzi, S. (2009) Introducing powerful ideas to children: analogical mediation for computing concepts through storytelling. Chattanooga, TN, USA: The 40th ACM Technical Symposium on Computer Science Education (SIGCSE 2009), 3-7 Mar 2009. In Inroads- SIGCSE Bulletin 41(1) 572. (Conference Contribution - Poster presentation)
  • Bell, T., Marghitu, D., Grimley, M., Manabe, H. and Bianco, G.M. (2009) Kinesthetic computer science activities in a virtual world. Chattanooga, TN, USA: The 40th ACM Technical Symposium on Computer Science Education (SIGCSE 2009), 3-7 Mar 2009. In Inroads- SIGCSE Bulletin 41(1) 573. (Conference Contribution - Poster presentation)
  • Bell, T. and Bell, R. (2009) The Treasure Hunt. New York, NY, USA: 40th ACM technical symposium on Computer science education, 2009. (Conference Contribution - Other)
  • Marghitu, D., Bell, T., Kearns, B., Ward, B. and Stephen-Pope, K. (2009) Using Virtual Worlds to Engage Typical and Special Needs Students in Kinesthetic Computer Science Activities: A Computer Science Unplugged Case Study. Honolulu, HI, USA: ED-MEDIA: World Conference on Educational Multimedia, Hypermedia & Telecommunications, 22-26 Jun 2009. (Conference Contribution - Paper in published proceedings)
  • Bell, T. and Bell, R. (2009) Video: The Orange Game. Chattanooga, TN, USA: 40th ACM technical Symposium on Computer Science Education, 4-7 Mar 2009. (Conference Contribution - Other)
  • Bell, T., Alexander, J., Freeman, I. and Grimley, M. (2008) Computer Science without computers: new outreach methods from old tricks (Invited). Auckland, New Zealand: Annual Conference of the National Advisory Committee on Computing Qualifications (NACQ 2008), 4-7 Jul 2008. (Conference Contribution - Paper in published proceedings)
  • Adjeroh, D., Bell, T. and Mukherjee, A. (2008) The Burrows-Wheeler Transform: Data Compression, Suffix Arrays, and Pattern Matching. New York: Springer. xii+351pp. http://dx.doi.org/10.1007/978-0-387-78909-5. (Authored Book)
  • Bell, T. and Bianco, G.M. (2007) Computing Pre-University: Primary computing education. In B.W. Wah (Ed.), Wiley Encyclopedia of Computer Science and Engineering: 625-632. Hoboken: John Wiley & Sons. http://dx.doi.org/10.1002/9780470050118.ecse973. (Chapter in Book)
  • Bell, T., Cockburn, A., Wingkvist, A. and Green, R. (2007) Podcasts as a supplement in tertiary education: An experiment with two Computer Science courses. Massey University, Auckland, New Zealand: Mobile Learning Technologies and Applications 2007 (MoLTA), 19 Feb 2007. In MoLTA 2007 70-77. (Conference Contribution - Paper in published proceedings)
  • Bell, T.C., Witten, I.H., Fellows, M., WonGyu, L., McKenzie, J. and Adams, R. (2006) Computer Science Unplugged: Off-line activities and games for all ages (in Korean). Seoul: Hongreung Science Publishing. 119pp. (Authored Book)
  • Obaid, M., Mukundan, R. and Bell, T. (2006) Enhancement of Moment Based Painterly Rendering Using Connected Components. Sydney, Australia: International Conference on Computer Graphics, Imaging and Visualisation (CGIV'06), 26-28 Jul 2006. In Proceedings 2006 International Conference Computer Graphics, Imaging and Visualisation: Techniques and Applications, CGIV'06 378-383. http://dx.doi.org/10.1109/CGIV.2006.38. (Conference Contribution - Paper in published proceedings)
  • Bainbridge, D. and Bell, T. (2006) Identifying music documents in a collection of images. Victoria, Canada: International Conference on Music Information Retrieval and Related Activities (ISMIR 2006), 8-12 Oct 2006. (Conference Contribution - Paper in published proceedings)
  • Gutwin, C., Fedak, C., Watson, M., Bell, T. and Dyck, J. (2006) Improving Network Efficiency in Real-Time Groupware with General Message Compression. Banff, Canada: Computer Supported Cooperative Work Conference (CSCW 2006), 4-8 Nov 2006. In Proceedings of the 2006 20th Anniversary Conference on Computer Supported Cooperative Work 119-128. (Conference Contribution - Paper in published proceedings)
  • Firth, A., Bell, T., Mukherjee, A. and Adjeroh, D. (2005) A comparison of BWT approaches to string pattern matching. Software: Practice and Experience 35(13): 1217-1258. (Journal Article)
  • Bell, T., Blizzard, D., Green, R. and Bainbridge, D. (2005) Design of a digital music stand. London, UK: 6th International Conference on Music Information Retrieval, 11-15 Sep 2005. In Proceedings of ISMIR 2005 430-433. (Conference Contribution - Paper in published proceedings)
  • Lobb, R., Bell, T. and Bainbridge, D. (2005) Fast Capture of Sheet Music for an Agile Digital Music Library. London, UK: 6th International Conference on Music Information Retrieval (ISMIR 2005), 11-15 Sep 2005. In Proceedings of ISMIR 2005 145-152. http://ismir2005.ismir.net/proceedings/1018.pdf. (Conference Contribution - Paper in published proceedings)
  • Bell, T., Church, A., McPherson, J. and Bainbridge, D. (2005) Page turning and image size in a digital music stand. Barcelona, Spain: International Computer Music Conference (ICMC2005), 5-9 Sep 2005. Paper ID 1262 (Conference Contribution - Paper in published proceedings)
  • Bainbridge, D. and Bell, T. (2003) A Music Notation Construction Engine for Optical Music Recognition. Software: Practice and Experience 33(2): 173-200. (Journal Article)
  • Zhang, N., Mukherjee, A., Adjeroh, D.A. and Bell, T. (2003) Approximate Pattern Matching Using the Burrows-Wheeler Transform. Snowbird, UT, USA: IEEE 2003 Data Compression Conference (DCC 2003), 25-27 Mar 2003. In Proceedings of DCC 2003 458. http://www.informatik.uni-trier.de/~ley/db/conf/dcc/dcc2003.html. (Conference Contribution - Poster presentation)
  • Bell, T., Thimbleby, H., Fellows, M., Witten, I., Koblitz, N. and Powell, M. (2003) Explaining Cryptographic Systems. Computers and Education 40(3): 199-215. (Journal Article)
  • Adjeroh, D.A., Zhang, Y., Mukherjee, A., Powell, M. and Bell, T. (2002) DNA Sequence Compression Using the Burrows-Wheeler Transform. Stanford, CA, USA: 1st IEEE Computer Society Bioinformatics Conference (CSB 2002), 14-16 Aug 2002. In Proceedings of CSB 2002 303-313. (Conference Contribution - Paper in published proceedings)
  • Adjeroh, D., Mukherjee, A., Bell, T., Powell, M. and Zhang, Y. (2002) Pattern Matching in BWT-Transformed Text. Snowbird, UT, USA: IEEE 2002 Data Compression Conference (DCC 2002), 2-4 Apr 2002. In Proceedings of DCC 2002 445. (Conference Contribution - Poster presentation)
  • Bell, T., Powell, M., Mukherjee, A. and Adjeroh, D.A. (2002) Searching BWT Compressed Text with the Boyer-Moore Algorithm and Binary Search. Snowbird, UT, USA: IEEE 2002 Data Compression Conference (DCC 2002), 2-4 Apr 2002. In Proceedings of DCC 2002 112-121. (Conference Contribution - Paper in published proceedings)
  • McKenzie, B.J. and Bell, T. (2001) Compression of sparse matrices by blocked Rice coding. IEEE Transactions on Information Theory 47(3): 1223-1230. (Journal Article)
  • Cockburn, A., Bell, T. and McKenzie, B. (2001) Death to the office of the nineties: An HCI perspective on some problems in modern office information systems. Journal of Research and Practice in Information Technology 33(1): 68-82. (Journal Article)
  • Bell, T., Cockburn, A., McKenzie, B. and Vargo, J. (2001) Digital lectures: If you make them, will students use them? Constraints on effective delivery of flexible learning systems. Interactive Multimedia Journal of Computer-Enhanced Learning 3(2) http://imej.wfu.edu/articles/2001/2/06/index.asp. (Journal Article)
  • Bell, T., Cockburn, A., McKenzie, B. and Vargo, J. (2001) Flexible Delivery Damaging to Learning? Lessons From the Canterbury Digital Lectures Project. Tampere, Finland: World Conference on Educational Multimedia, Hypermedia and Telecommunications (EdMedia 2001), 25-30 Jun 2001. In Proceedings of EdMedia 2001 117-122. (Conference Contribution - Paper in published proceedings)
  • Bainbridge, D. and Bell, T. (2001) The Challenge of Optical Music Recognition. Computers and the Humanities 35(2): 95-121. (Journal Article)
  • Bell, T. (2000) A Low-Cost High-Impact Computer Science Show for Family Audiences. Canberra, Australia: 23rd Australasian Computer Science Conference (ACSC 2000), 31 Jan-3 Feb 2000. In Proceedings of ACSC 2000 10-16. (Conference Contribution - Paper in published proceedings)
  • Bell, T. (2000) Data compression. In A. Ralston, E. Reilly and D. Hemmendinger (Ed.), Encyclopedia of Computer Science: 492-426. London: Nature Publishing Group. (Chapter in Book)
  • Lin, K. and Bell, T. (2000) Integrating Paper and Digital Music Information Systems. Plymouth, MA, USA: International Symposium on Music Information Retrieval (MUSIC IR 2000), 23-25 Oct 2000. http://ciir.cs.umass.edu/music2000/. (Conference Contribution - Poster presentation)
  • Bell, T., Thimbleby, H., Fellows, M., Witten, I. and Koblitz, N. (1999) Explaining cryptographic systems to the general public. Stockholm, Sweden: First IFIP World Conference on Information Security Education, Proceedings IFIPTC11 WG11.8 Conference, Stockholm University/Royal Institute of Technology, (Report Series 99-008), 1999. 221-233. (Conference Contribution - Paper in published proceedings)
  • Witten, I., Moffat, A. and Bell, T. (1999) Managing Gigabytes: Compressing and indexing documents and images. (2nd ed.). San Francisco: Morgan Kaufman. 519pp. (Authored Book)
  • Lin, F.Y. and Bell, T. (1999) Music Processing Using Colour. University of Canterbury, Christchurch: Proceedings of image and vision computing New Zealand 1999., 'Aug 1999'. 253--258. (Conference Contribution - Paper in published proceedings)
  • Bell, T. and McKenzie, B. (1998) Compression of sparse matrices by arithmetic coding. Los Alamitos, CA, USA: Proc. IEEE Data Compression Conference, Snowbird, Utah, March 1998. 23--32. (Conference Contribution - Paper in published proceedings)
  • Cockburn, A. and Bell, T. (1998) Extending HCI in the computer science curriculum. Brisbane, Australia: Proceedings in Third Australasian Conference on Computer Science Education, 8-10 Jul 1998. 113--120. (Conference Contribution - Paper in published proceedings)
  • Ng, E., Bell, T. and Cockburn, A. (1998) Improvements to a Pen-Based Musical Input System. Adelaide, Australia: OzCHI'98: The Australian Conference on Computer-Human Interaction., 29 Nov-4 Dec 1998. 239--252. (Conference Contribution - Paper in published proceedings)
  • Arnold, R. and Bell, T. (1997) A corpus for the evaluation of lossless compression algorithms. Los Alamitos, CA: IEEE Data Compression Conference, March 1997. 201-210. (Conference Contribution - Paper in published proceedings)
  • Bainbridge, D. and Bell, T. (1997) Dealing with superimposed objects in optical music recognition. Trinity College, Dublin, Ireland: Proc. Sixth International Conference on Image Processing and its Applications, volume 11, July 1997. 756-760. (Conference Contribution - Paper in published proceedings)
  • Moffat, A., Bell, T. and Witten, I. (1997) Lossless compression for text and images. In N. Jayant (Ed.), Signal Compression Coding of Speech, Audio, Text, Image and Video, World Scientific, 1997. Also appears as a special issue of the Inter. Journal of High Speed Electronics: 179-231. Singapore: World Scientific. (Chapter in Book)
  • Bell, T. (1996) An authentic task-based university level computer literacy course. Sydney, Australia: 1st Australian Computer Science Education Conference, 1996. In Proceedings of 1st Australian Computer Science Education Conference 295-301. (Conference Contribution - Paper in published proceedings)
  • Bainbridge, D. and Bell, T. (1996) An extensible Optical Music Recognition system. Sydney, Australia: Australian Computer Society Conference, Dec 1996. In Australian Computer Society Conference Proceedings 308-317. (Conference Contribution - Paper in published proceedings)
  • Murugesh, S., Bell, T. and Mitrovic, A. (1996) Learning by developing expert systems. New Zealand Computers in Education Society Conference: Hamilton, New Zealand, 1996. In Proceedings of New Zealand Computers in Education Society Conference 191-200. (Conference Contribution - Paper in published proceedings)
  • Anstice, J., Bell, T., Cockburn, A. and Setchell, M. (1996) The Design of a Pen-Based Musical Input System. Hamilton, New Zealand: OzCHI'96: The Sixth Australian Conference on Computer-Human Interaction, 24-27 Nov 1996. 260-267. (Conference Contribution - Paper in published proceedings)
  • Witten, I.H., Cunningham, S.J., Vallabh, M. and Bell, T.C. (1995) A New Zealand digital library for computer science research. Austin, TX, USA: 2nd Annual Conference on the Theory and Practice of Digital Libraries, 1995. In Proceedings of Digital Libraries '95 25-30. (Conference Contribution - Paper in published proceedings)
  • Witten, I.H., Moffat, A. and Bell, T.C. (1995) Compression and full-text indexing for digital libraries. McClean, VA, USA: Forum on Research & Technology Advances in Digital Libraries (ADL'95), 15-19 May 1995. In Advances in Digital Libraries 916 181-203. (Conference Contribution - Paper in published proceedings)
  • Pawlikowski, K., Bell, T., Emberson, H. and Ashton, P. (1995) Compression of data traffic in packet-based LANs. Snowbird, UT, USA: IEEE Data Compression Conference (DCC 95), 28-30 Mar 1995. In Proceedings of IEEE Data Compression Conference (Conference Contribution - Paper in published proceedings)
  • Bell, T.C., Bensemann, G. and Witten, I.H. (1995) Computer Science Unplugged: capturing the interest of the uninterested. Wellington, New Zealand: 14th NZ Computer Conference, 1995. In Proceedings of the 14th NZ Computer Conference (Conference Contribution - Paper in published proceedings)
  • Witten, I.H., Bell, T.C., Moffat, A. and Zobel, J. (1995) The MG Retrieval System: Compressing for Space and Speed. Communications of the ACM 38(4): 41-42. (Journal Article)
  • Moffat, A., Zobel, J., Witten, I.H. and Bell, T.C. (1995) The role of compression in document databases. ACM SIGWEB Newsletter 4(2): 20-21. http://dx.doi.org/10.1145/223301.223318. (Journal Article)
  • Gutmann, P.C. and Bell, T.C. (1994) A Hybrid Approach to Text Compression. Snowbird, UT, USA: IEEE Data Compression Conference 1994, 1994. In Proceedings of IEEE Data Compression Conference 225-233. (Conference Contribution - Paper in published proceedings)
  • Moffat, A., Sharman, N., Witten, I.H. and Bell, T.C. (1994) An empirical evaluation of coding methods for multi-symbol alphabets. Information Processing & Management 30(6): 791-804. http://dx.doi.org/10.1016/0306-4573(94)90007-8. (Journal Article)
  • Bell, T.C., Moffat, A. and Witten, I.H. (1994) Compressing the digital library. College Station, TX, USA: 1st Annual Conference on the Theory and Practice of Digital Libraries, 19-21 Jun 1994. In Proceedings of 1st Annual Conference on the Theory and Practice of Digital Libraries 41-46. (Conference Contribution - Paper in published proceedings)
  • Witten, I.H., Moffat, A. and Bell, T.C. (1994) Managing Gigabytes: Compressing and indexing documents and images. (1st ed.). New York: Van Nostrand Reinhold. 429. (Authored Book)
  • Bainbridge, D. and Bell, T. (1994) Playing Music on Computers. New Zealand Science Monthly Nov: 10-11. (Journal Article)
  • Witten, I.H., Bell, T.C., Moffat, A., Nevill-Manning, C.G., Smith, T.C. and Thimbleby, H. (1994) Semantic and Generative Models for Lossy Text Compression. The Computer Journal 37(2): 83-87. http://dx.doi.org/10.1093/comjnl/37.2.83. (Journal Article)
  • Witten, I.H., Bell, T.C., Emberson, H., Inglis, S. and Moffat, A. (1994) Textual image compression: two-stage lossy/lossless encoding of textual images. Proceedings of IEEE 82(6): 878-888. http://dx.doi.org/10.1109/5.286192. (Journal Article)
  • Bell, T.C. and Witten, I.H. (1994) The relationship between greedy parsing and symbol-wise text compression. Journal of the ACM 41(4): 708-724. http://dx.doi.org/10.1145/179812.179892. (Journal Article)
  • Bell, T.C. (1994) The view from the tower-the role of academia. Christchurch, New Zealand: 1994 NZ Computer Society Rutherford Conference, 1994. In Proceedings of the 1994 NZ Computer Society Rutherford Conference (Conference Contribution - Paper in published proceedings)
  • Moffat, A., Sharman, N.B., Witten, I.H. and Bell, T.C. (1993) An empirical evaluation of coding methods for multi-symbol alphabets. Snowbird, UT, USA: IEEE Data Compression Conference, 29-31 Mar 1993. In Proceedings of IEEE Data Compression Conference 108-117. (Conference Contribution - Paper in published proceedings)
  • Witten, I.H. and Bell, T.C. (1993) Getting research students started: a tale of two courses. Indianapolis, IN, USA: ACM Technical Symposium on Computer Science Education (SIGCSE), 1993. In ACM SIGCSE Conference Proceedings 165-169. (Conference Contribution - Paper in published proceedings)
  • Bell, T.C. and Kulp, D. (1993) Longest-match string searching for Ziv-Lempel compression. Software: Practice and Experience 23(7): 757-771. http://dx.doi.org/10.1002/spe.4380230705. (Journal Article)
  • Pawlikowski, K., Bell, T., Emberson, H. and Ashton, P. (1993) The Effect of Data Compression on Packet Sizes in Data Communication Systems. 8th Australian Teletraffic Research Seminar: Melbourne, Australia, 1993. (Conference Contribution - Paper in published proceedings)
  • Sharman, N.B., Bell, T.C. and Witten, I.H. (1992) Compression of pyramid coded images for progressive transmission. University of Canterbury, Christchurch, New Zealand: 7'th New Zealand Image Processing Workshop, 1992. In Proceedings of the 7th New Zealand Image Processing Workshop 171-176. (Conference Contribution - Paper in published proceedings)
  • Bell, T.C. (1992) Computer Science for the uninterested: designing displays for a science centre. Computers in New Zealand Schools 4(1): 40-46. (Journal Article)
  • Bell, T.C. (1992) Making Computer Science into child's play. Waikato University, Hamilton, New Zealand: New Zealand Computer Science Research Students' Conference, 28-30 Oct 1992. 31-38. (Conference Contribution - Paper in published proceedings)
  • Witten, I.H., Bell, T.C., Harrison, M.-E., James, M.L. and Moffat, A. (1992) Textual image compression. Snowbird, UT, USA: IEEE Data Compression Conference, 24-27 Mar 1992. In Proceedings of IEEE Data Compression Conference 42-51. (Conference Contribution - Paper in published proceedings)
  • Witten, I.H., Bell, T.C. and Nevill, C.G. (1991) Models for compression in full-text retrieval systems. Snowbird, UT, USA: IEEE Data Compression Conference, 8-11 Apr 1991. In Proceedings of IEEE Data Compression Conference 23-32. (Conference Contribution - Paper in published proceedings)
  • Bell, T.C. and Pawlikowski, K. (1991) The effect of data compression on packet sizes in data communication systems. Copenhagen, Denmark: 13th ITC Congress, 1991. In Proceedings 13th ITC Congress (Conference Contribution - Paper in published proceedings)
  • Witten, I.H. and Bell, T.C. (1991) The zero frequency problem: Estimating the probabilities of novel events in adaptive text compression. IEEE Transactions on Information Theory 37(4): 1085-1094. http://dx.doi.org/10.1109/18.87000. (Journal Article)
  • Nevill, C.G. and Bell, T.C. (1990) Compression of parallel texts. Siegen, Germany: Joint ALLC/ACH Conference, 5-9 Jun 1990. In Proceedings of Joint ALLC/ACH Conference (Conference Contribution - Paper in published proceedings)
  • Bell, T.C., Cleary, J.G. and Witten, I.H. (1990) Text Compression. Englewood Cliffs, NJ: Prentice Hall. 318pp. (Authored Book)
  • Bell, T.C. (1989) Compression rate fluctuation in data communication systems. Bond University, Australia: 4th Australian Teletraffic Research Seminar, 1989. In Proceedings of 4th Australian Teletraffic Research Seminar (Conference Contribution - Paper in published proceedings)
  • Witten, I.H. and Bell, T.C. (1988) Modeling natural language. Atlanta, GA, USA: 6th Symposium of Empirical Foundations of Information and Software Sciences, 1988. In Proceedings of the 6th Symposium of Empirical Foundations of Information and Software Sciences (Conference Contribution - Paper in published proceedings)